Author: "M Noh" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"M Noh"' showing total 517 results

Start Over Author "M Noh"

517 results on '"M Noh"'

1. Disseminated tuberculosis masquerading as a psychiatric illness—A case report

Author: Shalini Bhaskar and Mimi N. M. Noh
Subjects: disseminated tuberculosis, psychiatric, pulmonary, spinal involvements, Medicine
Abstract: Tuberculosis (TB) can affect any organ, and at times more than one organ in any sequence, in which case it is referred to as disseminated tuberculosis (DTB). We report a patient who presented primarily for psychiatric symptoms of three months’ duration, which later turned out to be a case of DTB involving the central nervous system as well as the spine and lungs. Case Presentation: An elderly lady with subacute onset and worsening behavioural changes of three months’ duration was referred for exclusion of organic brain disease. The neurological and respiratory examination, chest X-ray, electroencephalogram (EEG), and MRI of the brain were normal. She, however, had elevated C-reactive protein, ESR, and raised CSF opening pressure on lumbar puncture. The CSF cell counts, biochemistry, and cultures were within normal limits. Unable to detect a neurological cause for her illness, she was advised to consult a psychiatrist. Two months later she reported to us again, this time essentially for back pain. Investigations for the back pain (including CT spine) revealed a T12 compression fracture with irregularity of the left T12 pedicle and a para-spinal fluid collection. Pus drained from the collection showed mycobacterium tuberculosis bacteria on staining with ZN stain. The CT scan thorax also showed left lower lobe consolidation and a pleural effusion. Contrast CT scan brain revealed subtle meningeal enhancement at the right parietal region. With standard treatment with a four-drug anti-TB regimen (along with a short course of dexamethasone), she improved well. This case report indicates that the initial clinical presentation of TB in general, as well as DTB, can be misleading, resulting in delay in diagnosis and in initiating treatment.
Published: 2024
Full Text: View/download PDF

2. Developing an ensembled machine learning model for predicting water quality index in Johor River Basin

Author: L. M. Sidek, H. A. Mohiyaden, M. Marufuzzaman, N. S. M. Noh, Salim Heddam, Mohammad Ehteram, Ozgur Kisi, and Saad Sh. Sammen
Subjects: Water quality index, Gradient boosting regression, Random forest, Johor River, Environmental sciences, GE1-350, Environmental law, K3581-3598
Abstract: Abstract Currently, the Water Quality Index (WQI) model becomes a widely used tool to evaluate surface water quality for agriculture, domestic and industrial. WQI is one of the simplest mathematical tools that can assist water operator in decision making in assessing the quality of water and it is widely used in the last years. The water quality analysis and prediction is conducted for Johor River Basin incorporating the upstream to downstream water quality monitoring station data of the river. In this research, the numerical method is first used to calculate the WQI and identify the classes for validating the prediction results. Then, two ensemble and optimized machine learning models including gradient boosting regression (GB) and random forest regression (RF) are employed to predict the WQI. The study area selected is the Johor River basin located in Johor, Peninsular Malaysia. The initial phase of this study involves analyzing all available data on parameters concerning the river, aiming to gain a comprehensive understanding of the overall water quality within the river basin. Through temporal analysis, it was determined that Mg, E. coli, SS, and DS emerge as critical factors affecting water quality in this river basin. Then, in terms of WQI calculation, feature importance method is used to identify the most important parameters that can be used to predict the WQI. Finally, an ensemble-based machine learning model is designed to predict the WQI using three parameters. Two ensemble ML approaches are chosen to predict the WQI in the study area and achieved a R 2 of 0.86 for RF-based regression and 0.85 for GB-based ML technique. Finally, this research proves that using only the biochemical oxygen demand (BOD), the chemical oxygen demand (COD) and percentage of dissolved oxygen (DO%), the WQI can be predicted accurately and almost 96 times out of 100 sample, the water class can be predicted using GB ensembled ML algorithm. Moving forward, stakeholders may opt to integrate this research into their analyses, potentially yielding economic reliability and time savings.
Published: 2024
Full Text: View/download PDF

3. A response time model of the three-choice Mnemonic Similarity Task provides stable, mechanistically interpretable individual-difference measures

Author: Nidhi V. Banavar, Sharon M. Noh, Christopher N. Wahlheim, Brittany S. Cassidy, C. Brock Kirwan, Craig E. L. Stark, and Aaron M. Bornstein
Subjects: memory, pattern separation, Linear Ballistic Accumulator model, response times, fMRI, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571
Abstract: IntroductionThe Mnemonic Similarity Task (MST) is a widely used measure of individual tendency to discern small differences between remembered and presently presented stimuli. Significant work has established this measure as a reliable index of neurological and cognitive dysfunction and decline. However, questions remain about the neural and psychological mechanisms that support performance in the task.MethodsHere, we provide new insights into these questions by fitting seven previously-collected MST datasets (total N = 519), adapting a three-choice evidence accumulation model (the Linear Ballistic Accumulator). The model decomposes choices into automatic and deliberative components.ResultsWe show that these decomposed processes both contribute to the standard measure of behavior in this task, as well as capturing individual variation in this measure across the lifespan. We also exploit a delayed test/re-test manipulation in one of the experiments to show that model parameters exhibit improved stability, relative to the standard metric, across a 1 week delay. Finally, we apply the model to a resting-state fMRI dataset, finding that only the deliberative component corresponds to off-task co-activation in networks associated with long-term, episodic memory.DiscussionTaken together, these findings establish a novel mechanistic decomposition of MST behavior and help to constrain theories about the cognitive processes that support performance in the task.
Published: 2024
Full Text: View/download PDF

4. Identification of Anaplasma marginale adhesins for bovine erythrocytes using phage display

Author: Susan M. Noh, Jessica Ujczo, and Debra C. Alperin
Subjects: bovine anaplasmosis, adhesins, obligate intracellular pathogen, vaccine, Anaplasma marginale, red blood cells, Arctic medicine. Tropical medicine, RC955-962
Abstract: Bovine anaplasmosis, caused by Anaplasma marginale, is one of the most common tick-borne diseases of cattle and has a worldwide distribution. The high costs of bovine anaplasmosis are due to treatment, decreased production, and outbreaks resulting in high mortality. The impact of bovine anaplasmosis is greatest in tropical and subtropical regions where tick vectors are abundant year around. Prevention generally relies on the use of tetracyclines to prevent disease and acaricides to reduce tick burdens. Thus, additional methods to prevent disease while reducing the use of antibiotics are needed. Protection can be reliably achieved with immunization using outer membrane proteins, thus allowing for the possibility for development of a recombinant vaccine. However, prioritizing the selection and testing of antigens from the protective outer membrane extract remains a challenge. Because A. marginale is an obligate intracellular pathogen, surface proteins that mediate adhesion to host cells, primarily red blood cells (RBCs), are functionally relevant vaccine candidates. With some exceptions, the proteins that bind RBCs remain unknown. To address this gap, a phage display library expressing 66 A. marginale proteins was screened to identify adhesins for bovine RBCs. Of the screened proteins, 73% were eliminated due to poor binding to RBCs. Several potential adhesins were identified, including Msp1b and OmpA, which are known adhesions for bovine RBCs and tick cells, respectively. Additionally, Mlp3, Am779, Msp3, and Omp13 met the criteria as RBCs adhesins and may serve as high priority vaccine candidates for future testing.
Published: 2024
Full Text: View/download PDF

5. Memory precision and age differentially predict the use of decision-making strategies across the lifespan

Author: Sharon M. Noh, Umesh K. Singla, Ilana J. Bennett, and Aaron M. Bornstein
Subjects: Medicine, Science
Abstract: Abstract Memory function declines in normal aging, in a relatively continuous fashion following middle-age. The effect of aging on decision-making is less well-understood, with seemingly conflicting results on both the nature and direction of these age effects. One route for clarifying these mixed findings is to understand how age-related differences in memory affect decisions. Recent work has proposed memory sampling as a specific computational role for memory in decision-making, alongside well-studied mechanisms of reinforcement learning (RL). Here, we tested the hypothesis that age-related declines in episodic memory alter memory sampling. Participants (total N = 361; ages 18–77) performed one of two variants of a standard reward-guided decision experiment with additional trial-unique mnemonic content and a separately-administered task for assessing memory precision. When we fit participants’ choices with a hybrid computational model implementing both memory-based and RL-driven valuation side-by-side, we found that memory precision tracked the contribution of memory sampling to choice. At the same time, age corresponded to decreasing influence of RL and increasing perseveration. A second experiment confirmed these results and further revealed that memory precision tracked the specificity of memories selected for sampling. Together, these findings suggest that differences in decision-making across the lifespan may be related to memory function, and that interventions which aim to improve the former may benefit from targeting the latter.
Published: 2023
Full Text: View/download PDF

6. An adjuvant formulation containing Toll-like Receptor 7 agonist stimulates protection against morbidity and mortality due to Anaplasma marginale in a highly endemic region of west Africa.

Author: James E Futse, Songliedong Zumor-Baligi, Charles N K Ashiagbor, Susan M Noh, Christopher B Fox, and Guy H Palmer
Subjects: Medicine, Science
Abstract: Efficient cattle production and provision of animal-sourced foods in much of Africa is constrained by vector-borne bacterial and protozoal diseases. Effective vaccines are not currently available for most of these infections resulting in a continuous disease burden that limits genetic improvement. We tested whether stimulation of innate immunity using the Toll-like Receptor (TLR) 7 agonist imiquimod, formulated with saponin and water-in-oil emulsion, would protect against morbidity and mortality due to Anaplasma marginale, a tick-borne pathogen of cattle highly endemic in west Africa. In Trial 1, haplotype matched Friesian x Sanga (F1) A. marginale negative calves were allocated to either the experimental group (n = 10) and injected with the synthetic TLR 7 agonist/saponin formulation or to an untreated control group (n = 10). TLR7 agonist/saponin injected calves responded with significantly elevated rectal temperature, enlarged regional lymph nodes, and elevated levels of IL-6 post-injection as compared to control group calves. All calves were then allowed to graze in pasture for natural exposure to tick transmission. All calves in both groups acquired A. marginale, consistent with the high transmission rate in the endemic region. The need for antibiotic treatment, using pre-existing criteria, was significantly lower in the experimental group (odds ratio for not requiring treatment was 9.3, p = 0.03) as compared to the control group. Despite treatment, 6/10 calves in the control group died, reflecting treatment failures that are typical of anaplasmosis in the acute phase, while mortality in the experimental group was 1/10 (odds ratio for survival was 13.5, p = 0.03). The trial was then repeated using 45 Friesian x Sanga calves per group. In Trial 2, the odds ratios for preventing the need for treatment and for mortality in the TLR7 agonist/saponin experimental group versus the control group were 5.6 (p = 0.0002) and 7.0 (p = 0.004), respectively, reproducing the findings of the initial trial. Together these findings demonstrate that innate immune stimulation using a TLR7 agonist formulated with saponin and water-in-oil emulsion provides significant protection against disease caused by tick borne A. marginale in highly susceptible cross-bred cattle, critically important for their potential to increase productivity for smallholder farmers in Africa.
Published: 2024
Full Text: View/download PDF

7. Correction for Sidak-Loftis et al., 'The Unfolded-Protein Response Triggers the Arthropod Immune Deficiency Pathway'

Author: Lindsay C. Sidak-Loftis, Kristin L. Rosche, Natasha Pence, Jessica K. Ujczo, Joanna Hurtado, Elis A. Fisk, Alan G. Goodman, Susan M. Noh, John W. Peters, and Dana K. Shaw
Subjects: Microbiology, QR1-502
Published: 2022
Full Text: View/download PDF

8. Towards Sustainable Reservoir Management Under Future Climate: A Modelling Approach

Author: Sharip, Zati, Hassan, A. J., M. Noh, M. N., Biswas, Asit K., Series Editor, Tortajada, Cecilia, Series Editor, Altinbilek, Dogan, Editorial Board Member, González-Gómez, Francisco, Editorial Board Member, Gopalakrishnan, Chennat, Editorial Board Member, Horne, James, Editorial Board Member, Molden, David J., Editorial Board Member, Varis, Olli, Editorial Board Member, Wang, Hao, Editorial Board Member, Mohd Sidek, Lariyah, editor, Salih, Gasim Hayder Ahmed, editor, and Boosroh, Mohd Hariffin, editor
Published: 2020
Full Text: View/download PDF

9. C‐CNNLoc: Constrained CNN for robust indoor localization with building boundary

Author: Y. Oh, H.‐M. Noh, and W. Shin
Subjects: Computer communications, Mobile radio systems, Automated buildings, Local area networks, Neural nets, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract: Abstract To enable accurate and reliable indoor localization in a multi‐building environment, a novel constrained convolutional neural network (CNN)‐based indoor localization system (C‐CNNLoc) is proposed using WiFi fingerprinting approach. The proposed network has a sequential structure that firstly classifies a building, followed by estimating the user's location coordinate within the pre‐detected building. Furthermore, the location accuracy is improved by introducing a new loss function that incorporates a penalty term associated with the building boundary. Experimental results illustrate that the proposed method outperforms the existing solutions on the average distance error. The gain comes from that the approach tailored to a multi‐building indoor localization with the sequential structure is prone to successfully correct outliers, that is, predicted location coordinates that lie outside the buildings.
Published: 2021
Full Text: View/download PDF

10. A U.S. isolate of Theileria orientalis, Ikeda genotype, is transmitted to cattle by the invasive Asian longhorned tick, Haemaphysalis longicornis

Author: Kelcey D. Dinkel, David R. Herndon, Susan M. Noh, Kevin K. Lahmers, S. Michelle Todd, Massaro W. Ueti, Glen A. Scoles, Kathleen L. Mason, and Lindsay M. Fry
Subjects: Theileria orientalis, Ikeda genotype, Haemaphysalis longicornis, Asian longhorned tick, Transmission, Cattle, Infectious and parasitic diseases, RC109-216
Abstract: Abstract Background Theileria orientalis is a tick-borne hemoparasite that causes anemia, ill thrift, and death in cattle globally. The Ikeda strain of T. orientalis is more virulent than other strains, leading to severe clinical signs and death of up to 5% of affected animals. Within the Asia–Pacific region, where it affects 25% of Australian cattle, T. orientalis Ikeda has a significant economic impact on the cattle industry. In 2017, T. orientalis Ikeda was detected in a cattle herd in Albermarle County, Virginia, United States. Months earlier, the U.S. was alerted to the invasion of the Asian longhorned tick, Haemaphysalis longicornis, throughout the eastern U.S. Abundant H. longicornis ticks were identified on cattle in the T. orientalis-affected herd in VA, and a subset of ticks from the environment were PCR-positive for T. orientalis Ikeda. A strain of T. orientalis from a previous U.S. outbreak was not transmissible by H. longicornis; however, H. longicornis is the primary tick vector of T. orientalis Ikeda in other regions of the world. Thus, the objective of this study was to determine whether invasive H. longicornis ticks in the U.S. are competent vectors of T. orientalis Ikeda. Methods Nymphal H. longicornis ticks were fed on a splenectomized calf infected with the VA-U.S.-T. orientalis Ikeda strain. After molting, a subset of adult ticks from this cohort were dissected, and salivary glands assayed for T. orientalis Ikeda via qPCR. The remaining adult ticks from the group were allowed to feed on three calves. Calves were subsequently monitored for T. orientalis Ikeda infection via blood smear cytology and PCR. Results After acquisition feeding on a VA-U.S.-T. orientalis Ikeda-infected calf as nymphs, a subset of molted adult tick salivary glands tested positive by qPCR for T. orientalis Ikeda. Adult ticks from the same cohort successfully transmitted T. orientalis Ikeda to 3/3 naïve calves, each of which developed parasitemia reaching 0.4–0.9%. Conclusions Our findings demonstrate that U.S. H. longicornis ticks are competent vectors of the VA-U.S.-T. orientalis Ikeda strain. This data provides important information for the U.S. cattle industry regarding the potential spread of this parasite and the necessity of enhanced surveillance and control measures.
Published: 2021
Full Text: View/download PDF

11. The Unfolded-Protein Response Triggers the Arthropod Immune Deficiency Pathway

Author: Lindsay C. Sidak-Loftis, Kristin L. Rosche, Natasha Pence, Jessica K. Ujczo, Joanna Hurtado, Elis A. Fisk, Alan G. Goodman, Susan M. Noh, John W. Peters, and Dana K. Shaw
Subjects: Ixodes scapularis, immune deficiency pathway, unfolded-protein response, Borrelia burgdorferi, Anaplasma phagocytophilum, tick-borne disease, Microbiology, QR1-502
Abstract: ABSTRACT The insect immune deficiency (IMD) pathway is a defense mechanism that senses and responds to Gram-negative bacteria. Ticks lack genes encoding upstream components that initiate the IMD pathway. Despite this deficiency, core signaling molecules are present and functionally restrict tick-borne pathogens. The molecular events preceding activation remain undefined. Here, we show that the unfolded-protein response (UPR) initiates the IMD network. The endoplasmic reticulum (ER) stress receptor IRE1α is phosphorylated in response to tick-borne bacteria but does not splice the mRNA encoding XBP1. Instead, through protein modeling and reciprocal pulldowns, we show that Ixodes IRE1α complexes with TRAF2. Disrupting IRE1α-TRAF2 signaling blocks IMD pathway activation and diminishes the production of reactive oxygen species. Through in vitro, in vivo, and ex vivo techniques, we demonstrate that the UPR-IMD pathway circuitry limits the Lyme disease-causing spirochete Borrelia burgdorferi and the rickettsial agents Anaplasma phagocytophilum and A. marginale (anaplasmosis). Altogether, our study uncovers a novel linkage between the UPR and the IMD pathway in arthropods. IMPORTANCE The ability of an arthropod to harbor and transmit pathogens is termed “vector competency.” Many factors influence vector competency, including how arthropod immune processes respond to the microbe. Divergences in innate immunity between arthropods are increasingly being reported. For instance, although ticks lack genes encoding key upstream molecules of the immune deficiency (IMD) pathway, it is still functional and restricts causative agents of Lyme disease (Borrelia burgdorferi) and anaplasmosis (Anaplasma phagocytophilum). How the IMD pathway is activated in ticks without classically defined pathway initiators is not known. Here, we found that a cellular stress response network, the unfolded-protein response (UPR), functions upstream to induce the IMD pathway and restrict transmissible pathogens. Collectively, this explains how the IMD pathway can be activated in the absence of canonical pathway initiators. Given that the UPR is highly conserved, UPR-initiated immunity may be a fundamental principle impacting vector competency across arthropods.
Published: 2022
Full Text: View/download PDF

12. An 0.4–2.8 GHz CMOS Power Amplifier With On-Chip Broadband-Pre-Distorter (BPD) Achieving 36.1–38.6% PAE and 21 dBm Maximum Linear Output Power

Author: Selvakumar Mariappan, Jagadheswaran Rajendran, Yusman M. Yusof, Norlaili M. Noh, and Binboga Siddik Yarman
Subjects: Complementary metal oxide semiconductor (CMOS), power amplifier (PA), broadband, pre-distorter, power added efficiency (PAE), transceiver, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract: A broadband 180 nm CMOS power amplifier (PA) operating from a frequency bandwidth of 400 MHz to 2.8 GHz is presented in this paper. The PA is integrated with an inductor-less Broadband-Pre-Distorter (BPD) to enhance its linearity for wide bandwidth. The BPD consists only of MOS transistors, resistors, and capacitors which contribute to the wideband operation thus independent of the Q factor of passive inductors which contributes to the effectiveness of many other APDs available. The integrated BPD improves the Amplitude Modulation-to-Amplitude Modulation (AM-AM) and Amplitude Modulation-to-Phase Modulation (AM-PM) deviation of the PA across maximum linear output power of 21 dBm. Utilizing a silicon area of 1.69 mm2, mounted on Roger’s RO4000/FR4 PCB, the BPD-PA produces a maximum output power of more than 22 dBm for 2.4 GHz bandwidth with a minimum power gain of 15 dB. The corresponding peak power added efficiency (PAE) of more than 35% is achieved across the operating bandwidth. The fabricated BPD-PA meets the Adjacent Channel Leakage Ratio (ACLR) specification of −30 dBc at a maximum linear output power of 21 dBm (3 dB back-off from maximum output power) when tested with 20 MHz LTE signal at 1.7 GHz.
Published: 2021
Full Text: View/download PDF

13. Validating the S-STEM among Malaysian Pre-University Students

Author: A. M. Noh and A. Z. Khairani
Subjects: attitude towards stem, confirmatory factor analysis, pre-university students, s-stem, Theory and practice of education, LB5-3640, Science
Abstract: The purpose of this study is to validate the measure of student attitudes toward science, technology, engineering, and mathematics (S-STEM). This study used the cross-sectional design to employ translation and cultural adaptation as well as providing evidence of the reliability and validity of the S-STEM. The instrument was administered to 748 pre-university students in Penang, Malaysia. Data were analyzed using confirmatory factor analysis (CFA) with AMOS 19.0. Results support S-STEM as a three-factor multidimensional construct, namely attitude towards science, attitude towards technology/engineering, and attitude towards mathematics. All statistics such as factor loadings, average variance explained, construct reliability, evidence of discriminant validity, and goodnessof-fit indices were found to be at acceptable values. These positive results are significant because although the instrument has undergone numerous modifications, such as translation and others, the generalizability of the instrument is still preserved in pre-university Malaysian students. Counselors may administer the instrument to facilitate the choice of courses to enroll at university. The research may utilize the instrument to gather data in providing measures to improve students’ participation in learning STEM. The practical implications, as well as the methodological limitations of the present study, are discussed.
Published: 2020
Full Text: View/download PDF

14. Targeted mutagenesis in Anaplasma marginale to define virulence and vaccine development against bovine anaplasmosis.

Author: Paidashe Hove, Swetha Madesh, Arathy Nair, Deborah Jaworski, Huitao Liu, Jonathan Ferm, Michael D Kleinhenz, Margaret A Highland, Andrew K Curtis, Johann F Coetzee, Susan M Noh, Ying Wang, Dominica Genda, and Roman R Ganta
Subjects: Immunologic diseases. Allergy, RC581-607, Biology (General), QH301-705.5
Abstract: Tick-borne Anaplasma species are obligate, intracellular, bacterial pathogens that cause important diseases globally in people, agricultural animals, and dogs. Targeted mutagenesis methods are yet to be developed to define genes essential for these pathogens. In addition, vaccines conferring protection against diseases caused by Anaplasma species are not available. Here, we describe a targeted mutagenesis method for deletion of the phage head-to-tail connector protein (phtcp) gene in Anaplasma marginale. The mutant did not cause disease and exhibited attenuated growth in its natural host (cattle). We then assessed its ability to confer protection against wild-type A. marginale infection challenge. Additionally, we compared vaccine protection with the mutant to that of whole cell A. marginale inactivated antigens as a vaccine (WCAV) candidate. Upon infection challenge, non-vaccinated control cattle developed severe disease, with an average 57% drop in packed cell volume (PCV) between days 26-31 post infection, an 11% peak in erythrocytic infection, and apparent anisocytosis. Conversely, following challenge, all animals receiving the live mutant did not develop clinical signs or anemia, or erythrocyte infection. In contrast, the WCAV vaccinees developed similar disease as the non-vaccinees following A. marginale infection, though the peak erythrocyte infection reduced to 6% and the PCV dropped 43%. This is the first study describing targeted mutagenesis and its application in determining in vivo virulence and vaccine development for an Anaplasma species pathogen. This study will pave the way for similar research in related Anaplasma pathogens impacting multiple hosts.
Published: 2022
Full Text: View/download PDF

15. Anaplasma marginale Infection of Dermacentor andersoni Primary Midgut Cell Culture Is Dependent on Fucosylated Glycans

Author: Rubikah Vimonish, Janaina Capelli-Peixoto, Wendell C. Johnson, Hala E. Hussein, Naomi S. Taus, Kelly A. Brayton, Ulrike G. Munderloh, Susan M. Noh, and Massaro W. Ueti
Subjects: Dermacentor andersoni, midgut cells, primary cell culture, fucosyltransferase, glycans, Anaplasma marginale, Microbiology, QR1-502
Abstract: Tick midgut is the primary infection site required by tick-borne pathogens to initiate their development for transmission. Despite the biological significance of this organ, cell cultures derived exclusively from tick midgut tissues are unavailable and protocols for generating primary midgut cell cultures have not been described. To study the mechanism of Anaplasma marginale-tick cell interactions, we successfully developed an in vitro Dermacentor andersoni primary midgut cell culture system. Midgut cells were maintained for up to 120 days. We demonstrated the infection of in vitro midgut cells by using an A. marginale omp10::himar1 mutant with continued replication for up to 10 days post-infection. Anaplasma marginale infection of midgut cells regulated the differential expression of tick α-(1,3)-fucosyltransferases A1 and A2. Silencing of α-(1,3)-fucosyltransferase A2 in uninfected midgut cells reduced the display of fucosylated glycans and significantly lowered the susceptibility of midgut cells to A. marginale infection, suggesting that the pathogen utilized core α-(1,3)-fucose of N-glycans to infect tick midgut cells. This is the first report using in vitro primary D. andersoni midgut cells to study A. marginale-tick cell interactions at the molecular level. The primary midgut cell culture system will further facilitate the investigation of tick-pathogen interactions, leading to the development of novel intervention strategies for tick-borne diseases.
Published: 2022
Full Text: View/download PDF

16. The Effect of Rickettsia bellii on Anaplasma marginale Infection in Dermacentor andersoni Cell Culture

Author: Joseph A. Aspinwall, Shelby M. Jarvis, Susan M. Noh, and Kelly A. Brayton
Subjects: Rickettsia bellii, Anaplasma marginale, Dermacentor andersoni, coinfection, superinfection, tick-borne disease, Biology (General), QH301-705.5
Abstract: Anaplasma marginale is a tick-borne pathogen that causes bovine anaplasmosis, which affects cattle around the world. Despite its broad prevalence and severe economic impacts, limited treatments exist for this disease. Our lab previously reported that a high proportion of Rickettsia bellii, a tick endosymbiont, in the microbiome of a population of Dermacentor andersoni ticks negatively impacts the ticks’ ability to acquire A. marginale. To better understand this correlation, we used mixed infection of A. marginale and R. bellii in D. andersoni cell culture. We assessed the impacts of different amounts of R. bellii in coinfections, as well as established R. bellii infection, on the ability of A. marginale to establish an infection and grow in D. andersoni cells. From these experiments, we conclude that A. marginale is less able to establish an infection in the presence of R. bellii and that an established R. bellii infection inhibits A. marginale replication. This interaction highlights the importance of the microbiome in preventing tick vector competence and may lead to the development of a biological or mechanistic control for A. marginale transmission by the tick.
Published: 2023
Full Text: View/download PDF

17. A CMOS Low Power Current Source Tunable Inductor With 80% Tuning Range for RFIC

Author: Selvakumar Mariappan, Jagadheswaran Rajendran, Shahrolhafiz S. Ibrahim, Sofiyah S. Hamid, Yusman M. Yusof, Norlaili M. Noh, Subhash C. Rustagi, and Arjun K. Kantimahanti
Subjects: Tunable inductor, radio frequency integrated circuit (RFIC), CMOS, power amplifier, IoT, yield, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract: This article describes a novel Low Power Current Source Tunable Inductor (LPCSTI) for CMOS Radio Frequency Integrated Circuits (RFIC). The LPCSTI comprises a deep triode common source transistor, a stabilizer resistor and a coupling capacitor which is capable to increase the physical inductance value up to 80% from its default value thus achieving higher inductance per area. Integration of the tuner to a physical inductor of 1.2 nH increases the inductance value up to 2.2 nH at 2.5 GHz, contributing to an area reduction of 52%. The LPCSTI is implemented in a single stage CMOS 180 nm power amplifier (PA) and tested. The tunability property of the LPCSTI allows the performance of the LPCSTI-PA to be adjusted and makes it resilient to process variations, thus enhances production yield. The LPCSTI-PA achieved a maximum output power of 15 dBm as well as peak efficiency of 45%. Measurement on 10 sample dice show that the efficiency of the LPCSTI-PA can be maintained to be more than 20% at maximum linear output power.
Published: 2020
Full Text: View/download PDF

18. Preparation and Thermoluminescence Properties of Polycrystalline Na2SO4/SiO2 composite

Author: Omer, Fatma, primary, Abdulla, Youssef, additional, and M. Noh, Abdullah, additional
Published: 2024
Full Text: View/download PDF

19. Integration of Back Calculation Anti Windup and Smith Predictor on PID Controller for Varying Time Delay System with Input Constraint

Author: Mohd Hafiz A. Jalil, Norhafidah Mohd Salan, Rohaiza Hamdan, Rafidah Ngadengon, Herdawatie Abd Kadir, F. H. M. Noh, and Nurhani Kasuan
Subjects: back calculation anti windup, input constraint, pid controller, smith predictor, varying time delay system, Engineering (General). Civil engineering (General), TA1-2040, Technology (General), T1-995
Abstract: Proportional Integral Derivative (PID) controller is still the most widely used controller in the industry. However, the presence of varying time delay and input constraint cause PID controller performance to deteriorate and produce unsatisfactory operation. This situation becomes worsening if the varying time delay and input constraint come simultaneously during system operation. To tackle this issue, this paper focuses on the integration of smith predictor and back calculation anti windup on PID controller (PID-BC-SP) towards improving the performance of PID controller due to simultaneous presence of uncertain time delay and input constraint on the system. The designated controller is tested on a first order plus dead time model of glycerin bleaching process plant in order to observe the performance of the controller. Results obtained show that PID-BC-SP produces a better performance and higher robustness as compared to PID, PID to anti windup and PID with smith predictor controllers, whilst handling simultaneous presence of input constraint and varying time delay.
Published: 2019

20. Model Reference Adaptive Controller without Integral (MRACWI) for Position Control of DC Motor

Author: Mohd Hafiz A. Jalil, Rohaiza Hamdan, Silma Amy Fazira Abd Latif, Rafidah Ngadengon, Herdawatie Abd Kadir, F. H. M Noh, and Nurhani Kasuan
Subjects: arx model, dc motor, model reference adaptive control, pid controller, position control, Engineering (General). Civil engineering (General), TA1-2040, Technology (General), T1-995
Abstract: A direct current (DC) motor is an important actuator and has been used extensively in many industries such as for positioning machines and robotic systems. Proper position regulation of DC motor is inherently important in the industry due to several factors such as the requirement for accurate positioning and safety measures. Therefore, this paper focuses on the development of model reference adaptive control without integral (MRACWI) to achieve a better position regulation of DC motor. Based on the results, it is shown that the MRACWI is capable to provide robust and precise performance in controlling the position of DC motor and produce better performance in terms of settling time, percentage overshoot and mean square error as compared with PID controller, standard MRAC and MRAC with sigma modification.
Published: 2019

21. Effect of hypoglycaemia on measures of myocardial blood flow and myocardial injury in adults with and without type 1 diabetes: A prospective, randomised, open‐label, blinded endpoint, cross‐over study

Author: Radzi M. Noh, Alex J. Graveling, Ninian N. Lang, Audrey C. White, Kuan Ken Lee, Nicholas L. Mills, David E. Newby, Chim C. Lang, and Brian M. Frier
Subjects: cardiovascular function, coronary flow reserve, hypoglycaemia, myocardial ischaemia, type 1 diabetes, Diseases of the endocrine glands. Clinical endocrinology, RC648-665
Abstract: Abstract Aims This study examined the effect of experimentally‐induced hypoglycaemia on measures of myocardial blood flow and myocardial injury in adults with, and without, type 1 diabetes. Methods In a prospective, randomised, open‐label, blinded, endpoint cross‐over study, 17 young adults with type 1 diabetes with no cardiovascular risk factors, and 10 healthy non‐diabetic volunteers, underwent hyperinsulinaemic‐euglycaemic (blood glucose 4.5–5.5 mmol/L) and hypoglycaemic (2.2–2.5 mmol/L) clamps. Myocardial blood flow was assessed using transthoracic echocardiography Doppler coronary flow reserve (CFR) and myocardial injury using plasma high‐sensitivity cardiac troponin I (hs‐cTnI) concentration. Results During hypoglycaemia, coronary flow reserve trended non‐significantly lower in those with type 1 diabetes than in the non‐diabetic participants (3.54 ± 0.47 vs. 3.89 ± 0.89). A generalised linear mixed‐model analysis examined diabetes status and euglycaemia or hypoglycaemia as factors affecting CFR. No statistically significant difference in CFR was observed for diabetes status (p = .23) or between euglycaemia and hypoglycaemia (p = .31). No changes in hs‐cTnI occurred during hypoglycaemia or in the recovery period (p = .86). Conclusions A small change in CFR was not statistically significant in this study, implying hypoglycaemia may require more than coronary vasomotor dysfunction to cause harm. Further larger studies are required to investigate this putative problem.
Published: 2021
Full Text: View/download PDF

22. Observation of Gravitational Waves from Two Neutron Star–Black Hole Coalescences

Author: R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, A. Adams, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, D. Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, T. Akutsu, K. M. Aleman, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, M. Ando, S. V. Angelova, S. Ansoldi, J. M. Antelis, S. Antier, S. Appert, Koya Arai, Koji Arai, Y. Arai, S. Araki, A. Araya, M. C. Araya, J. S. Areeda, M. Arène, N. Aritomi, N. Arnaud, S. M. Aronson, K. G. Arun, H. Asada, Y. Asali, G. Ashton, Y. Aso, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. AultONeal, C. Austin, S. Babak, F. Badaracco, M. K. M. Bader, S. Bae, Y. Bae, A. M. Baer, S. Bagnasco, Y. Bai, L. Baiotti, J. Baird, R. Bajpai, M. Ball, G. Ballardin, S. W. Ballmer, M. Bals, A. Balsamo, G. Baltus, S. Banagiri, D. Bankar, R. S. Bankar, J. C. Barayoga, C. Barbieri, B. C. Barish, D. Barker, P. Barneo, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, M. A. Barton, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, A. C. Baylor, M. Bazzan, B. Bécsy, V. M. Bedakihale, M. Bejger, I. Belahcene, V. Benedetto, D. Beniwal, M. G. Benjamin, R. Benkel, T. F. Bennett, J. D. Bentley, M. BenYaala, F. Bergamin, B. K. Berger, S. Bernuzzi, C. P. L. Berry, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, A. V. Bhandari, D. Bhattacharjee, S. Bhaumik, J. Bidler, I. A. Bilenko, G. Billingsley, I. A. Birney, O. Birnholtz, S. Biscans, M. Bischi, S. Biscoveanu, A. Bisht, B. Biswas, M. Bitossi, M.-A. Bizouard, J. K. Blackburn, J. Blackman, C. D. Blair, D. G. Blair, R. M. Blair, F. Bobba, N. Bode, M. Boer, G. Bogaert, M. Boldrini, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, R. Bork, V. Boschi, N. Bose, S. Bose, V. Bossilkov, V. Boudart, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, A. Branch, M. Branchesi, J. E. Brau, M. Breschi, T. Briant, J. H. Briggs, A. Brillet, M. Brinkmann, P. Brockill, A. F. Brooks, J. Brooks, D. D. Brown, S. Brunett, G. Bruno, R. Bruntz, J. Bryant, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, R. Buscicchio, D. Buskulic, R. L. Byer, L. Cadonati, M. Caesar, G. Cagnoli, C. Cahillane, H. W. Cain III, J. Calderón Bustillo, J. D. Callaghan, T. A. Callister, E. Calloni, J. B. Camp, M. Canepa, M. Cannavacciuolo, K. C. Cannon, H. Cao, J. Cao, Z. Cao, E. Capocasa, E. Capote, G. Carapella, F. Carbognani, J. B. Carlin, M. F. Carney, M. Carpinelli, G. Carullo, T. L. Carver, J. Casanueva Diaz, C. Casentini, G. Castaldi, S. Caudill, M. Cavaglià, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, E. Cesarini, W. Chaibi, K. Chakravarti, B. Champion, C.-H. Chan, C. Chan, C. L. Chan, M. Chan, K. Chandra, P. Chanial, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, K. Chatziioannou, A. Chen, C. Chen, H. Y. Chen, J. Chen, K. Chen, X. Chen, Y.-B. Chen, Y.-R. Chen, Z. Chen, H. Cheng, C. K. Cheong, H. Y. Cheung, H. Y. Chia, F. Chiadini, C-Y. Chiang, R. Chierici, A. Chincarini, M. L. Chiofalo, A. Chiummo, G. Cho, H. S. Cho, S. Choate, R. K. Choudhary, S. Choudhary, N. Christensen, H. Chu, Q. Chu, Y-K. Chu, S. Chua, K. W. Chung, G. Ciani, P. Ciecielag, M. Cieślar, M. Cifaldi, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, E. N. Clark, J. A. Clark, L. Clarke, P. Clearwater, S. Clesse, F. Cleva, E. Coccia, P.-F. Cohadon, D. E. Cohen, L. Cohen, M. Colleoni, C. G. Collette, M. Colpi, C. M. Compton, M. Constancio Jr., L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, S. Corezzi, K. R. Corley, N. Cornish, D. Corre, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M. W. Coughlin, S. B. Coughlin, J.-P. Coulon, S. T. Countryman, B. Cousins, P. Couvares, P. B. Covas, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D. E. Creighton, T. D. Creighton, A. W. Criswell, M. Croquette, S. G. Crowder, J. R. Cudell, T. J. Cullen, A. Cumming, R. Cummings, E. Cuoco, M. Curyło, T. Dal Canton, G. Dálya, A. Dana, L. M. DaneshgaranBajastani, B. D’Angelo, S. L. Danilishin, S. D’Antonio, K. Danzmann, C. Darsow-Fromm, A. Dasgupta, L. E. H. Datrier, V. Dattilo, I. Dave, M. Davier, G. S. Davies, D. Davis, E. J. Daw, R. Dean, D. DeBra, M. Deenadayalan, J. Degallaix, M. De Laurentis, S. Deléglise, V. Del Favero, F. De Lillo, N. De Lillo, W. Del Pozzo, L. M. DeMarchi, F. De Matteis, V. D’Emilio, N. Demos, T. Dent, A. Depasse, R. De Pietri, R. De Rosa, C. De Rossi, R. DeSalvo, R. De Simone, S. Dhurandhar, M. C. Díaz, M. Diaz-Ortiz Jr., N. A. Didio, T. Dietrich, L. Di Fiore, C. Di Fronzo, C. Di Giorgio, F. Di Giovanni, T. Di Girolamo, A. Di Lieto, B. Ding, S. Di Pace, I. Di Palma, F. Di Renzo, A. K. Divakarla, A. Dmitriev, Z. Doctor, L. D’Onofrio, F. Donovan, K. L. Dooley, S. Doravari, I. Dorrington, M. Drago, J. C. Driggers, Y. Drori, Z. Du, J.-G. Ducoin, P. Dupej, O. Durante, D. D’Urso, P.-A. Duverne, S. E. Dwyer, P. J. Easter, M. Ebersold, G. Eddolls, B. Edelman, T. B. Edo, O. Edy, A. Effler, S. Eguchi, J. Eichholz, S. S. Eikenberry, M. Eisenmann, R. A. Eisenstein, A. Ejlli, Y. Enomoto, L. Errico, R. C. Essick, H. Estellés, D. Estevez, Z. Etienne, T. Etzel, M. Evans, T. M. Evans, B. E. Ewing, V. Fafone, H. Fair, S. Fairhurst, X. Fan, A. M. Farah, S. Farinon, B. Farr, W. M. Farr, N. W. Farrow, E. J. Fauchon-Jones, M. Favata, M. Fays, M. Fazio, J. Feicht, M. M. Fejer, F. Feng, E. Fenyvesi, D. L. Ferguson, A. Fernandez-Galiana, I. Ferrante, T. A. Ferreira, F. Fidecaro, P. Figura, I. Fiori, M. Fishbach, R. P. Fisher, R. Fittipaldi, V. Fiumara, R. Flaminio, E. Floden, E. Flynn, H. Fong, J. A. Font, B. Fornal, P. W. F. Forsyth, A. Franke, S. Frasca, F. Frasconi, C. Frederick, Z. Frei, A. Freise, R. Frey, P. Fritschel, V. V. Frolov, G. G. Fronzé, Y. Fujii, Y. Fujikawa, M. Fukunaga, M. Fukushima, P. Fulda, M. Fyffe, H. A. Gabbard, B. U. Gadre, S. M. Gaebel, J. R. Gair, J. Gais, S. Galaudage, R. Gamba, D. Ganapathy, A. Ganguly, D. Gao, S. G. Gaonkar, B. Garaventa, C. García-Núñez, C. García-Quirós, F. Garufi, B. Gateley, S. Gaudio, V. Gayathri, G. Ge, G. Gemme, A. Gennai, J. George, L. Gergely, P. Gewecke, S. Ghonge, Abhirup. Ghosh, Archisman Ghosh, Shaon Ghosh, Shrobana Ghosh, Sourath Ghosh, B. Giacomazzo, L. Giacoppo, J. A. Giaime, K. D. Giardina, D. R. Gibson, C. Gier, M. Giesler, P. Giri, F. Gissi, J. Glanzer, A. E. Gleckl, P. Godwin, E. Goetz, R. Goetz, N. Gohlke, B. Goncharov, G. González, A. Gopakumar, M. Gosselin, R. Gouaty, B. Grace, A. Grado, M. Granata, V. Granata, A. Grant, S. Gras, P. Grassia, C. Gray, R. Gray, G. Greco, A. C. Green, R. Green, A. M. Gretarsson, E. M. Gretarsson, D. Griffith, W. Griffiths, H. L. Griggs, G. Grignani, A. Grimaldi, E. Grimes, S. J. Grimm, H. Grote, S. Grunewald, P. Gruning, J. G. Guerrero, G. M. Guidi, A. R. Guimaraes, G. Guixé, H. K. Gulati, H.-K. Guo, Y. Guo, Anchal Gupta, Anuradha Gupta, P. Gupta, E. K. Gustafson, R. Gustafson, F. Guzman, S. Ha, L. Haegel, A. Hagiwara, S. Haino, O. Halim, E. D. Hall, E. Z. Hamilton, G. Hammond, W.-B. Han, M. Haney, J. Hanks, C. Hanna, M. D. Hannam, O. A. Hannuksela, H. Hansen, T. J. Hansen, J. Hanson, T. Harder, T. Hardwick, K. Haris, J. Harms, G. M. Harry, I. W. Harry, D. Hartwig, K. Hasegawa, B. Haskell, R. K. Hasskew, C.-J. Haster, K. Hattori, K. Haughian, H. Hayakawa, K. Hayama, F. J. Hayes, J. Healy, A. Heidmann, M. C. Heintze, J. Heinze, J. Heinzel, H. Heitmann, F. Hellman, P. Hello, A. F. Helmling-Cornell, G. Hemming, M. Hendry, I. S. Heng, E. Hennes, J. Hennig, M. H. Hennig, F. Hernandez Vivanco, M. Heurs, S. Hild, P. Hill, Y. Himemoto, T. Hinderer, A. S. Hines, Y. Hiranuma, N. Hirata, E. Hirose, W. C. G. Ho, S. Hochheim, D. Hofman, J. N. Hohmann, A. M. Holgado, N. A. Holland, I. J. Hollows, Z. J. Holmes, K. Holt, D. E. Holz, Z. Hong, P. Hopkins, J. Hough, E. J. Howell, C. G. Hoy, D. Hoyland, A. Hreibi, B-H. Hsieh, Y. Hsu, G-Z. Huang, H-Y. Huang, P. Huang, Y-C. Huang, Y.-J. Huang, Y.-W. Huang, M. T. Hübner, A. D. Huddart, E. A. Huerta, B. Hughey, D. C. Y. Hui, V. Hui, S. Husa, S. H. Huttner, R. Huxford, T. Huynh-Dinh, S. Ide, B. Idzkowski, A. Iess, B. Ikenoue, S. Imam, K. Inayoshi, H. Inchauspe, C. Ingram, Y. Inoue, G. Intini, K. Ioka, M. Isi, K. Isleif, K. Ito, Y. Itoh, B. R. Iyer, K. Izumi, V. JaberianHamedan, T. Jacqmin, S. J. Jadhav, S. P. Jadhav, A. L. James, A. Z. Jan, K. Jani, K. Janssens, N. N. Janthalur, P. Jaranowski, D. Jariwala, R. Jaume, A. C. Jenkins, C. Jeon, M. Jeunon, W. Jia, J. Jiang, H.-B. Jin, G. R. Johns, A. W. Jones, D. I. Jones, J. D. Jones, P. Jones, R. Jones, R. J. G. Jonker, L. Ju, K. Jung, P. Jung, J. Junker, K. Kaihotsu, T. Kajita, M. Kakizaki, C. V. Kalaghatgi, V. Kalogera, B. Kamai, M. Kamiizumi, N. Kanda, S. Kandhasamy, G. Kang, J. B. Kanner, Y. Kao, S. J. Kapadia, D. P. Kapasi, S. Karat, C. Karathanasis, S. Karki, R. Kashyap, M. Kasprzack, W. Kastaun, S. Katsanevas, E. Katsavounidis, W. Katzman, T. Kaur, K. Kawabe, K. Kawaguchi, N. Kawai, T. Kawasaki, F. Kéfélian, D. Keitel, J. S. Key, S. Khadka, F. Y. Khalili, I. Khan, S. Khan, E. A. Khazanov, N. Khetan, M. Khursheed, N. Kijbunchoo, C. Kim, J. C. Kim, J. Kim, K. Kim, W. S. Kim, Y.-M. Kim, C. Kimball, N. Kimura, P. J. King, M. Kinley-Hanlon, R. Kirchhoff, J. S. Kissel, N. Kita, H. Kitazawa, L. Kleybolte, S. Klimenko, A. M. Knee, T. D. Knowles, E. Knyazev, P. Koch, G. Koekoek, Y. Kojima, K. Kokeyama, S. Koley, P. Kolitsidou, M. Kolstein, K. Komori, V. Kondrashov, A. K. H. Kong, A. Kontos, N. Koper, M. Korobko, K. Kotake, M. Kovalam, D. B. Kozak, C. Kozakai, R. Kozu, V. Kringel, N. V. Krishnendu, A. Królak, G. Kuehn, F. Kuei, A. Kumar, P. Kumar, Rahul Kumar, Rakesh Kumar, J. Kume, K. Kuns, C. Kuo, H-S. Kuo, Y. Kuromiya, S. Kuroyanagi, K. Kusayanagi, K. Kwak, S. Kwang, D. Laghi, E. Lalande, T. L. Lam, A. Lamberts, M. Landry, P. Landry, B. B. Lane, R. N. Lang, J. Lange, B. Lantz, I. La Rosa, A. Lartaux-Vollard, P. D. Lasky, M. Laxen, A. Lazzarini, C. Lazzaro, P. Leaci, S. Leavey, Y. K. Lecoeuche, H. K. Lee, H. M. Lee, H. W. Lee, J. Lee, K. Lee, R. Lee, J. Lehmann, A. Lemaître, E. Leon, M. Leonardi, N. Leroy, N. Letendre, Y. Levin, J. N. Leviton, A. K. Y. Li, B. Li, J. Li, K. L. Li, T. G. F. Li, X. Li, C-Y. Lin, F-K. Lin, F-L. Lin, H. L. Lin, L. C.-C. Lin, F. Linde, S. D. Linker, J. N. Linley, T. B. Littenberg, G. C. Liu, J. Liu, K. Liu, X. Liu, M. Llorens-Monteagudo, R. K. L. Lo, A. Lockwood, M. L. Lollie, L. T. London, A. Longo, D. Lopez, M. Lorenzini, V. Loriette, M. Lormand, G. Losurdo, J. D. Lough, C. O. Lousto, G. Lovelace, H. Lück, D. Lumaca, A. P. Lundgren, L.-W. Luo, R. Macas, M. MacInnis, D. M. Macleod, I. A. O. MacMillan, A. Macquet, I. Magaña Hernandez, F. Magaña-Sandoval, C. Magazzù, R. M. Magee, R. Maggiore, E. Majorana, C. Makarem, I. Maksimovic, S. Maliakal, A. Malik, N. Man, V. Mandic, V. Mangano, J. L. Mango, G. L. Mansell, M. Manske, M. Mantovani, M. Mapelli, F. Marchesoni, M. Marchio, F. Marion, Z. Mark, S. Márka, Z. Márka, C. Markakis, A. S. Markosyan, A. Markowitz, E. Maros, A. Marquina, S. Marsat, F. Martelli, I. W. Martin, R. M. Martin, M. Martinez, V. Martinez, K. Martinovic, D. V. Martynov, E. J. Marx, H. Masalehdan, K. Mason, E. Massera, A. Masserot, T. J. Massinger, M. Masso-Reid, S. Mastrogiovanni, A. Matas, M. Mateu-Lucena, F. Matichard, M. Matiushechkina, N. Mavalvala, J. J. McCann, R. McCarthy, D. E. McClelland, P. McClincy, S. McCormick, L. McCuller, G. I. McGhee, S. C. McGuire, C. McIsaac, J. McIver, D. J. McManus, T. McRae, S. T. McWilliams, D. Meacher, M. Mehmet, A. K. Mehta, A. Melatos, D. A. Melchor, G. Mendell, A. Menendez-Vazquez, C. S. Menoni, R. A. Mercer, L. Mereni, K. Merfeld, E. L. Merilh, J. D. Merritt, M. Merzougui, S. Meshkov, C. Messenger, C. Messick, P. M. Meyers, F. Meylahn, A. Mhaske, A. Miani, H. Miao, I. Michaloliakos, C. Michel, Y. Michimura, H. Middleton, L. Milano, A. L. Miller, M. Millhouse, J. C. Mills, E. Milotti, M. C. Milovich-Goff, O. Minazzoli, Y. Minenkov, N. Mio, Ll. M. Mir, A. Mishkin, C. Mishra, T. Mishra, T. Mistry, S. Mitra, V. P. Mitrofanov, G. Mitselmakher, R. Mittleman, O. Miyakawa, A. Miyamoto, Y. Miyazaki, K. Miyo, S. Miyoki, Geoffrey Mo, K. Mogushi, S. R. P. Mohapatra, S. R. Mohite, I. Molina, M. Molina-Ruiz, M. Mondin, M. Montani, C. J. Moore, D. Moraru, F. Morawski, A. More, C. Moreno, G. Moreno, Y. Mori, S. Morisaki, Y. Moriwaki, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Arunava Mukherjee, D. Mukherjee, Soma Mukherjee, Subroto Mukherjee, N. Mukund, A. Mullavey, J. Munch, E. A. Muñiz, P. G. Murray, R. Musenich, S. L. Nadji, K. Nagano, S. Nagano, A. Nagar, K. Nakamura, H. Nakano, M. Nakano, R. Nakashima, Y. Nakayama, I. Nardecchia, T. Narikawa, L. Naticchioni, B. Nayak, R. K. Nayak, R. Negishi, B. F. Neil, J. Neilson, G. Nelemans, T. J. N. Nelson, M. Nery, A. Neunzert, K. Y. Ng, S. W. S. Ng, C. Nguyen, P. Nguyen, T. Nguyen, L. Nguyen Quynh, W.-T. Ni, S. A. Nichols, A. Nishizawa, S. Nissanke, F. Nocera, M. Noh, M. Norman, C. North, S. Nozaki, L. K. Nuttall, J. Oberling, B. D. O’Brien, Y. Obuchi, J. O’Dell, W. Ogaki, G. Oganesyan, J. J. Oh, K. Oh, S. H. Oh, M. Ohashi, N. Ohishi, M. Ohkawa, F. Ohme, H. Ohta, M. A. Okada, Y. Okutani, K. Okutomi, C. Olivetto, K. Oohara, C. Ooi, R. Oram, B. O’Reilly, R. G. Ormiston, N. D. Ormsby, L. F. Ortega, R. O’Shaughnessy, E. O’Shea, S. Oshino, S. Ossokine, C. Osthelder, S. Otabe, D. J. Ottaway, H. Overmier, A. E. Pace, G. Pagano, M. A. Page, G. Pagliaroli, A. Pai, S. A. Pai, J. R. Palamos, O. Palashov, C. Palomba, K. Pan, P. K. Panda, H. Pang, P. T. H. Pang, C. Pankow, F. Pannarale, B. C. Pant, F. Paoletti, A. Paoli, A. Paolone, A. Parisi, J. Park, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, M. Patel, B. Patricelli, E. Payne, T. C. Pechsiri, M. Pedraza, M. Pegoraro, A. Pele, F. E. Peña Arellano, S. Penn, A. Perego, A. Pereira, T. Pereira, C. J. Perez, C. Périgois, A. Perreca, S. Perriès, J. Petermann, D. Petterson, H. P. Pfeiffer, K. A. Pham, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, L. Pierini, V. Pierro, G. Pillant, F. Pilo, L. Pinard, I. M. Pinto, B. J. Piotrzkowski, K. Piotrzkowski, M. Pirello, M. Pitkin, E. Placidi, W. Plastino, C. Pluchar, R. Poggiani, E. Polini, D. Y. T. Pong, S. Ponrathnam, P. Popolizio, E. K. Porter, J. Powell, M. Pracchia, T. Pradier, A. K. Prajapati, K. Prasai, R. Prasanna, G. Pratten, T. Prestegard, M. Principe, G. A. Prodi, L. Prokhorov, P. Prosposito, L. Prudenzi, A. Puecher, M. Punturo, F. Puosi, P. Puppo, M. Pürrer, H. Qi, V. Quetschke, P. J. Quinonez, R. Quitzow-James, F. J. Raab, G. Raaijmakers, H. Radkins, N. Radulesco, P. Raffai, S. X. Rail, S. Raja, C. Rajan, K. E. Ramirez, T. D. Ramirez, A. Ramos-Buades, J. Rana, P. Rapagnani, U. D. Rapol, B. Ratto, A. Ray, V. Raymond, N. Raza, M. Razzano, J. Read, L. A. Rees, T. Regimbau, L. Rei, S. Reid, D. H. Reitze, P. Relton, P. Rettegno, F. Ricci, C. J. Richardson, J. W. Richardson, L. Richardson, P. M. Ricker, G. Riemenschneider, K. Riles, M. Rizzo, N. A. Robertson, R. Robie, F. Robinet, A. Rocchi, J. A. Rocha, S. Rodriguez, R. D. Rodriguez-Soto, L. Rolland, J. G. Rollins, V. J. Roma, M. Romanelli, R. Romano, C. L. Romel, A. Romero, I. M. Romero-Shaw, J. H. Romie, C. A. Rose, D. Rosińska, S. G. Rosofsky, M. P. Ross, S. Rowan, S. J. Rowlinson, Santosh Roy, Soumen Roy, D. Rozza, P. Ruggi, K. Ryan, S. Sachdev, T. Sadecki, J. Sadiq, N. Sago, S. Saito, Y. Saito, K. Sakai, Y. Sakai, M. Sakellariadou, Y. Sakuno, O. S. Salafia, L. Salconi, M. Saleem, F. Salemi, A. Samajdar, E. J. Sanchez, J. H. Sanchez, L. E. Sanchez, N. Sanchis-Gual, J. R. Sanders, A. Sanuy, T. R. Saravanan, N. Sarin, B. Sassolas, H. Satari, B. S. Sathyaprakash, S. Sato, T. Sato, O. Sauter, R. L. Savage, V. Savant, T. Sawada, D. Sawant, H. L. Sawant, S. Sayah, D. Schaetzl, M. Scheel, J. Scheuer, A. Schindler-Tyka, P. Schmidt, R. Schnabel, M. Schneewind, R. M. S. Schofield, A. Schönbeck, B. W. Schulte, B. F. Schutz, E. Schwartz, J. Scott, S. M. Scott, M. Seglar-Arroyo, E. Seidel, T. Sekiguchi, Y. Sekiguchi, D. Sellers, A. S. Sengupta, N. Sennett, D. Sentenac, E. G. Seo, V. Sequino, A. Sergeev, Y. Setyawati, T. Shaffer, M. S. Shahriar, B. Shams, L. Shao, S. Sharifi, A. Sharma, P. Sharma, P. Shawhan, N. S. Shcheblanov, H. Shen, S. Shibagaki, M. Shikauchi, R. Shimizu, T. Shimoda, K. Shimode, R. Shink, H. Shinkai, T. Shishido, A. Shoda, D. H. Shoemaker, D. M. Shoemaker, K. Shukla, S. ShyamSundar, M. Sieniawska, D. Sigg, L. P. Singer, D. Singh, N. Singh, A. Singha, A. M. Sintes, V. Sipala, V. Skliris, B. J. J. Slagmolen, T. J. Slaven-Blair, J. Smetana, J. R. Smith, R. J. E. Smith, S. N. Somala, K. Somiya, E. J. Son, K. Soni, S. Soni, B. Sorazu, V. Sordini, F. Sorrentino, N. Sorrentino, H. Sotani, R. Soulard, T. Souradeep, E. Sowell, V. Spagnuolo, A. P. Spencer, M. Spera, A. K. Srivastava, V. Srivastava, K. Staats, C. Stachie, D. A. Steer, J. Steinlechner, S. Steinlechner, D. J. Stops, S. Stevenson, M. Stover, K. A. Strain, L. C. Strang, G. Stratta, A. Strunk, R. Sturani, A. L. Stuver, J. Südbeck, S. Sudhagar, V. Sudhir, R. Sugimoto, H. G. Suh, T. Z. Summerscales, H. Sun, L. Sun, S. Sunil, A. Sur, J. Suresh, P. J. Sutton, Takamasa Suzuki, Toshikazu Suzuki, B. L. Swinkels, M. J. Szczepańczyk, P. Szewczyk, M. Tacca, H. Tagoshi, S. C. Tait, H. Takahashi, R. Takahashi, A. Takamori, S. Takano, H. Takeda, M. Takeda, C. Talbot, H. Tanaka, Kazuyuki Tanaka, Kenta Tanaka, Taiki Tanaka, Takahiro Tanaka, A. J. Tanasijczuk, S. Tanioka, D. B. Tanner, D. Tao, A. Tapia, E. N. Tapia San Martin, J. D. Tasson, S. Telada, R. Tenorio, L. Terkowski, M. Test, M. P. Thirugnanasambandam, M. Thomas, P. Thomas, J. E. Thompson, S. R. Thondapu, K. A. Thorne, E. Thrane, Shubhanshu Tiwari, Srishti Tiwari, V. Tiwari, K. Toland, A. E. Tolley, T. Tomaru, Y. Tomigami, T. Tomura, M. Tonelli, A. Torres-Forné, C. I. Torrie, I. Tosta e Melo, D. Töyrä, A. Trapananti, F. Travasso, G. Traylor, M. C. Tringali, A. Tripathee, L. Troiano, A. Trovato, L. Trozzo, R. J. Trudeau, D. S. Tsai, D. Tsai, K. W. Tsang, T. Tsang, J-S. Tsao, M. Tse, R. Tso, K. Tsubono, S. Tsuchida, L. Tsukada, D. Tsuna, T. Tsutsui, T. Tsuzuki, M. Turconi, D. Tuyenbayev, A. S. Ubhi, N. Uchikata, T. Uchiyama, R. P. Udall, A. Ueda, T. Uehara, K. Ueno, G. Ueshima, D. Ugolini, C. S. Unnikrishnan, F. Uraguchi, A. L. Urban, T. Ushiba, S. A. Usman, A. C. Utina, H. Vahlbruch, G. Vajente, A. Vajpeyi, G. Valdes, M. Valentini, V. Valsan, N. van Bakel, M. van Beuzekom, J. F. J. van den Brand, C. Van Den Broeck, D. C. Vander-Hyde, L. van der Schaaf, J. V. van Heijningen, J. Vanosky, M. H. P. M. van Putten, M. Vardaro, A. F. Vargas, V. Varma, M. Vasúth, A. Vecchio, G. Vedovato, J. Veitch, P. J. Veitch, K. Venkateswara, J. Venneberg, G. Venugopalan, D. Verkindt, Y. Verma, D. Veske, F. Vetrano, A. Viceré, A. D. Viets, V. Villa-Ortega, J.-Y. Vinet, S. Vitale, T. Vo, H. Vocca, E. R. G. von Reis, J. von Wrangel, C. Vorvick, S. P. Vyatchanin, L. E. Wade, M. Wade, K. J. Wagner, R. C. Walet, M. Walker, G. S. Wallace, L. Wallace, S. Walsh, J. Wang, J. Z. Wang, W. H. Wang, R. L. Ward, J. Warner, M. Was, T. Washimi, N. Y. Washington, J. Watchi, B. Weaver, L. Wei, M. Weinert, A. J. Weinstein, R. Weiss, C. M. Weller, F. Wellmann, L. Wen, P. Weßels, J. W. Westhouse, K. Wette, J. T. Whelan, D. D. White, B. F. Whiting, C. Whittle, D. Wilken, D. Williams, M. J. Williams, A. R. Williamson, J. L. Willis, B. Willke, D. J. Wilson, W. Winkler, C. C. Wipf, T. Wlodarczyk, G. Woan, J. Woehler, J. K. Wofford, I. C. F. Wong, C. Wu, D. S. Wu, H. Wu, S. Wu, D. M. Wysocki, L. Xiao, W-R. Xu, T. Yamada, H. Yamamoto, Kazuhiro Yamamoto, Kohei Yamamoto, T. Yamamoto, K. Yamashita, R. Yamazaki, F. W. Yang, L. Yang, Yang Yang, Yi Yang, Z. Yang, M. J. Yap, D. W. Yeeles, A. B. Yelikar, M. Ying, K. Yokogawa, J. Yokoyama, T. Yokozawa, A. Yoon, T. Yoshioka, Hang Yu, Haocun Yu, H. Yuzurihara, A. Zadrożny, M. Zanolin, F. Zappa, S. Zeidler, T. Zelenova, J.-P. Zendri, M. Zevin, M. Zhan, H. Zhang, J. Zhang, L. Zhang, R. Zhang, T. Zhang, C. Zhao, G. Zhao, Yue Zhao, Yuhang Zhao, Z. Zhou, X. J. Zhu, Z.-H. Zhu, A. B. Zimmerman, Y. Zlochower, M. E. Zucker, J. Zweizig, and the LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration
Subjects: Astrophysics, QB460-466
Abstract: We report the observation of gravitational waves from two compact binary coalescences in LIGO’s and Virgo’s third observing run with properties consistent with neutron star–black hole (NSBH) binaries. The two events are named GW200105_162426 and GW200115_042309, abbreviated as GW200105 and GW200115; the first was observed by LIGO Livingston and Virgo and the second by all three LIGO–Virgo detectors. The source of GW200105 has component masses $8.{9}_{-1.5}^{+1.2}$ and $1.{9}_{-0.2}^{+0.3}\,{M}_{\odot }$ , whereas the source of GW200115 has component masses $5.{7}_{-2.1}^{+1.8}$ and $1.{5}_{-0.3}^{+0.7}\,{M}_{\odot }$ (all measurements quoted at the 90% credible level). The probability that the secondary’s mass is below the maximal mass of a neutron star is 89%–96% and 87%–98%, respectively, for GW200105 and GW200115, with the ranges arising from different astrophysical assumptions. The source luminosity distances are ${280}_{-110}^{+110}$ and ${300}_{-100}^{+150}\,\mathrm{Mpc}$ , respectively. The magnitude of the primary spin of GW200105 is less than 0.23 at the 90% credible level, and its orientation is unconstrained. For GW200115, the primary spin has a negative spin projection onto the orbital angular momentum at 88% probability. We are unable to constrain the spin or tidal deformation of the secondary component for either event. We infer an NSBH merger rate density of ${45}_{-33}^{+75}\,{\mathrm{Gpc}}^{-3}\,{\mathrm{yr}}^{-1}$ when assuming that GW200105 and GW200115 are representative of the NSBH population or ${130}_{-69}^{+112}\,{\mathrm{Gpc}}^{-3}\,{\mathrm{yr}}^{-1}$ under the assumption of a broader distribution of component masses.
Published: 2021
Full Text: View/download PDF

23. GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run

Author: R Abbott, T D Abbott, S Abraham, F Acernese, K Ackley, A Adams, C Adams, R X Adhikari, V B Adya, C Aeldt, M Agathos, K Agatsuma, N Aggarwal, O D Aguiar, L Aiello, A Ain, P Ajith, S Akcay, G Allen, A Allocca, P A Altin, A Amato, S Anand, A Ananyeva, S B Anderson, W G Anderson, S V Angelova, S Ansoldi, J M Antelis, K Arai, M Arene, S Antier, J S Areeda, S Appert, M C Araya, N Arnaud, S M Aronson, K G Arun, Y Asali, S Ascenzi, G Ashton, S M Aston, P Astone, F Aubin, P Aufmuth, K AultONeal, C Austin, V Avendano, S Babak, F Badaracco, M K M Bader, S Bae, A M Baer, S Bagnasco, J Baird, M Ball, G Ballardin, S W Ballmer, A Bals, A Balsamo, G Baltus, S Banagiri, D Bankar, R S Bankar, J C Barayoga, C Barbieri, B C Barish, D Barker, P Barneo, S Barnum, F Barone, B Barr, L Barsotti, M Barsuglia, D Barta, J Bartlett, I Bartos, R Bassiri, A Basti, M Bawaj, J C Bayley, M Bazzan, B R Becher, B Becsy, V M Bedakihale, M Bejger, I Belahcene, D Beniwal, M G Benjamin, T F Bennett, J D Bentley, F Bergamin, B K Berger, G Bergmann, S Bernuzzi, C P L Berry, D Bersanetti, A Bertolini, J Betzwieser, R Bhandare, A V Bhandari, D Bhattacharjee, J Bidler, I A Bilenko, G Billingsley, R Birney, O Birnholtz, S Biscans, M Bischi, S Biscoveanu, A Bisht, M Bitossi, M -A Bizouard, J K Blackburn, J Blackman, C D Blair, D G Blair, R M Blair, O Blanch, F Bobba, N Bode, M Boer, Y Boetzel, G Bogaert, M Boldrini, F Bondu, E Bonilla, R Bonnand, P Booker, B A Boom, R Bork, V Boschi, S Bose, V Bossilkov, V Boudart, Y Bouanais, A Bozzi, C Bradaschia, P R Brady, A Bramley, M Branchesi, J E Brau, M Breschi, T Briant, J H Briggs, F Brighenti, A Brillet, M Brinkmann, P Brockill, A F Brooks, J Brooks, D D Brown, S Brunett, G Bruno, R Bruntz, A Buikema, T Bulik, H J Bulten, A Buonanno, R Buscicchio, D Buskulic, R L Byer, M Cabero, L Cadonati, M Caesar, G Cagnoli, C Cahillane, J Calderon Bustillo, J D Callaghan, T A Callister, E Calloni, J B Camp, M Canepa, K C Cannon, H Cao, J Cao, G Carapella, F Carbognani, M F Carney, M Carpinelli, G Carullo, T L Carver, J Casanueva Diaz, C Casentini, S Caudill, M Cavaglia, F Cavalier, R Cavalieri, G Cella, P Cerda Duran, E Cesarini, W Chaibi, K Chakravarti, C -L Chan, C Chan, K Chandra, P Chanial, S Chao, P Charlton, E A Chase, E Chassande Mottin, D Chatterjee, D Chattopadhyay, M Chaturvedi, K Chatziioannou, A Chen, H Y Chen, X Chen, Y Chen, H -P Cheng, C K Cheong, H Y Chia, F Chiadini, R Chierici, A Chincarini, A Chiummo, G Cho, H S Cho, M Cho, S Choate, N Christensen, Q Chu, S Chua, K W Chung, S Chung, G Ciani, P Ciecielag, M Cieslar, M Cifaldi, A A Ciobanu, R Ciolfi, F Cipriano, A Cirone, F Clara, E N Clark, J A Clark, L Clarke, P Clearwater, S Clesse, F Cleva, E Coccia, P -F Cohadon, D E Cohen, M Colleoni, C G Collette, C Collins, M Colpi, M Constancio Jr, L Conti, S J Cooper, P Corban, T R Corbitt, I Cordero Carrion, S Corezzi, K R Corley, N Cornish, D Corre, A Corsi, S Cortese, C A Costa, R Cotesta, M W Coughlin, S B Coughlin, J -P Coulon, S T Countryman, B Cousins, P Couvares, P B Covas, D M Coward, M J Cowart, D C Coyne, R Coyne, J D E Creighton, T D Creighton, M Croquette, S G Crowder, J R Cudell, T J Cullen, A Cumming, R Cummings, L Cunningham, E Cuoco, M Curylo, T Dal Canton, G Dalya, A Dana, L M DaneshgaranBajastani, B DAngelo, B Danila, S L Danilishin, S DAntonio, K Danzmann, C DarsowFromm, A Dasgupta, L E H Datrier, V Dattilo, I Dave, M Davier, G S Davies, D Davis, E J Daw, R Dean, D DeBra, M Deenadayalan, J Degallaix, M De Laurentis, S Deleglise, V Del Favero, F De Lillo, N De Lillo, W Del Pozzo, L M DeMarchi, F De Matteis, V DEmilio, N Demos, T Denker, T Dent, A Depasse, R De Pietri, R De Rosa, C De Rossi, R DeSalvo, O de Varona, S Dhurandhar, M C Diaz, M Diaz Ortiz Jr, N A Didio, T Dietrich, L Di Fiore, C DiFronzo, C Di Giorgio, F Di Giovanni, M Di Giovanni, T Di Girolamo, A Di Lieto, B Ding, S Di Pace, I Di Palma, F Di Renzo, A K Divakarla, A Dmitriev, Z Doctor, L DOnofrio, F Donovan, K L Dooley, S Doravari, I Dorrington, T P Downes, M Drago, J C Driggers, Z Du, J -G Ducoin, P Dupej, O Durante, D DUrso, P -A Duverne, S E Dwyer, P J Easter, G Eddolls, B Edelman, T B Edo, O Edy, A Effler, J Eichholz, S S Eikenberry, M Eisenmann, R A Eisenstein, A Ejlli, L Errico, R C Essick, H Estelles, D Estevez, Z B Etienne, T Etzel, M Evans, T M Evans, B E Ewing, V Fafone, H Fair, S Fairhurst, X Fan, A M Farah, S Farinon, B Farr, W M Farr, E J Fauchon Jones, M Favata, M Fays, M Fazio, J Feicht, M M Fejer, F Feng, E Fenyvesi, D L Ferguson, A Fernandez Galiana, I Ferrante, T A Ferreira, F Fidecaro, P Figura, I Fiori, D Fiorucci, M Fishbach, R P Fisher, J M Fishner, R Fittipaldi, M Fitz Axen, V Fiumara, R Flaminio, E Floden, E Flynn, H Fong, J A Font, P W F Forsyth, J -D Fournier, S Frasca, F Frasconi, Z Frei, A Freise, R Frey, V Frey, P Fritschel, V V Frolov, G G Fronze, P Fulda, M Fyffe, H A Gabbard, B U Gadre, S M Gaebel, J R Gair, J Gais, S Galaudage, R Gamba, D Ganapathy, A Ganguly, S G Gaonkar, B Garaventa, C Garcia Quiros, F Garufi, B Gateley, S Gaudio, V Gayathri, G Gemme, A Gennai, D George, J George, R N George, L Gergely, S Ghonge, Abhirup Ghosh, Archisman Ghosh, S Ghosh, B Giacomazzo, L Giacoppo, J A Giaime, K D Giardina, D R Gibson, C Gier, K Gill, P Giri, J Glanzer, A E Gleckl, P Godwin, E Goetz, R Goetz, N Gohlke, B Goncharov, G Gonzalez, A Gopakumar, S E Gossan, M Gosselin, R Gouaty, B Grace, A Grado, M Granata, V Granata, A Grant, S Gras, P Grassia, C Gray, R Gray, G Greco, A C Green, R Green, E M Gretarsson, H L Griggs, G Grignani, A Grimaldi, E Grimes, S J Grimm, H Grote, S Grunewald, P Gruning, J G Guerrero, G M Guidi, A R Guimaraes, G Guixe, H K Gulati, Y Guo, Anchal Gupta, Anuradha Gupta, P Gupta, E K Gustafson, R Gustafson, F Guzman, L Haegel, O Halim, E D Hall, E Z Hamilton, G Hammond, M Haney, M M Hanke, J Hanks, C Hanna, M D Hannam, O A Hannuksela, O Hannuksela, H Hansen, T J Hansen, J Hanson, T Harder, T Hardwick, K Haris, J Harms, G M Harry, I W Harry, D Hartwig, R K Hasskew, C -J Haster, K Haughian, F J Hayes, J Healy, A Heidmann, M C Heintze, J Heinze, J Heinzel, H Heitmann, F Hellman, P Hello, A F Helmling Cornell, G Hemming, M Hendry, I S Heng, E Hennes, J Hennig, M H Hennig, F Hernandez Vivanco, M Heurs, S Hild, P Hill, A S Hines, S Hochheim, E Hofgard, D Hofman, J N Hohmann, A M Holgado, N A Holland, I J Hollows, Z J Holmes, K Holt, D E Holz, P Hopkins, C Horst, J Hough, E J Howell, C G Hoy, D Hoyland, Y Huang, M T Hubner, A D Huddart, E A Huerta, B Hughey, V Hui, S Husa, S H Huttner, B M Hutzler, R Huxford, T Huynh-Dinh, B Idzkowski, A Iess, S Imperato, H Inchauspe, C Ingram, G Intini, M Isi, B R Iyer, V JaberianHamedan, T Jacqmin, S J Jadhav, S P Jadhav, A L James, K Jani, K Janssens, N N Janthalur, P Jaranowski, D Jariwala, R Jaume, A C Jenkins, M Jeunon, J Jiang, G R Johns, N K Johnson McDaniel, A W Jones, D I Jones, J D Jones, P Jones, R Jones, R J G Jonker, L Ju, J Junker, C V Kalaghatgi, V Kalogera, B Kamai, S Kandhasamy, G Kang, J B Kanner, S J Kapadia, D P Kapasi, C Karathanasis, S Karki, R Kashyap, M Kasprzack, W Kastaun, S Katsanevas, E Katsavounidis, W Katzman, K Kawabe, F Kefelian, D Keitel, J S Key, S Khadka, F Y Khalili, I Khan, S Khan, E A Khazanov, N Khetan, M Khursheed, N Kijbunchoo, C Kim, G J Kim, J C Kim, K Kim, W S Kim, Y -M Kim, C Kimball, P J King, M Kinley Hanlon, R Kirchho, J S Kissel, L Kleybolte, S Klimenko, T D Knowles, E Knyazev, P Koch, S M Koehlenbeck, G Koekoek, S Koley, M Kolstein, K Komori, V Kondrashov, A Kontos, N Koper, M Korobko, W Z Korth, M Kovalam, D B Kozak, C Kramer, V Kringel, N V Krishnendu, A Krolak, G Kuehn, A Kumar, P Kumar, Rahul Kumar, Rakesh Kumar, K Kuns, S Kwang, B D Lackey, D Laghi, E Lalande, T L Lam, A Lamberts, M Landry, B B Lane, R N Lang, J Lange, B Lantz, R K Lanza, I La Rosa, A Lartaux Vollard, P D Lasky, M Laxen, A Lazzarini, C Lazzaro, P Leaci, S Leavey, Y K Lecoeuche, H M Lee, H W Lee, J Lee, K Lee, J Lehmann, E Leon, N Leroy, N Letendre, Y Levin, A Li, J Li, K J L Li, T G F Li, X Li, F Linde, S D Linker, J N Linley, T B Littenberg, J Liu, X Liu, M Llorens Monteagudo, R K L Lo, A Lockwood, L T London, A Longo, M Lorenzini, V Loriette, M Lormand, G Losurdo, J D Lough, C O Lousto, G Lovelace, H Luck, D Lumaca, A P Lundgren, Y Ma, R Macas, M MacInnis, D M Macleod, I A O MacMillan, A Macquet, I Magana Hernandez, F Magana Sandoval, C Magazzu, R M Magee, E Majorana, I Maksimovic, S Maliakal, A Malik, N Man, V Mandic, V Mangano, G L Mansell, M Manske, M Mantovani, M Mapelli, F Marchesoni, F Marion, S Marka, Z Marka, C Markakis, A S Markosyan, A Markowitz, E Maros, A Marquina, S Marsat, F Martelli, I W Martin, R M Martin, M Martinez, V Martinez, D V Martynov, H Masalehdan, K Mason, E Massera, A Masserot, T J Massinger, M Masso Reid, S Mastrogiovanni, A Matas, M Mateu Lucena, F Matichard, M Matiushechkina, N Mavalvala, E Maynard, J J McCann, R McCarthy, D E McClelland, S McCormick, L McCuller, S C McGuire, C McIsaac, J McIver, D J McManus, T McRae, S T McWilliams, D Meacher, G D Meadors, M Mehmet, A K Mehta, A Melatos, D A Melchor, G Mendell, A Menendez Vazquez, R A Mercer, L Mereni, K Merfeld, E L Merilh, J D Merritt, M Merzougui, S Meshkov, C Messenger, C Messick, R Metzdor, P M Meyers, F Meylahn, A Mhaske, A Miani, H Miao, I Michaloliakos, C Michel, H Middleton, L Milano, A L Miller, M Millhouse, J C Mills, E Milotti, M C Milovich Go, O Minazzoli, Y Minenkov, Ll M Mir, A Mishkin, C Mishra, T Mistry, S Mitra, V P Mitrofanov, G Mitselmakher, R Mittleman, G Mo, K Mogushi, S R P Mohapatra, S R Mohite, I Molina, M Molina Ruiz, M Mondin, M Montani, C J Moore, D Moraru, F Morawski, G Moreno, S Morisaki, B Mours, C M Mow Lowry, S Mozzon, F Muciaccia, Arunava Mukherjee, D Mukherjee, Soma Mukherjee, Subroto Mukherjee, N Mukund, A Mullavey, J Munch, E A Muniz, P G Murray, S L Nadji, A Nagar, I Nardecchia, L Naticchioni, R K Nayak, B F Neil, J Neilson, G Nelemans, T J N Nelson, M Nery, A Neunzert, A H Nitz, K Y Ng, S Ng, C Nguyen, P Nguyen, T Nguyen, S A Nichols, S Nissanke, F Nocera, M Noh, C North, D Nothard, L K Nuttall, J Oberling, B D O Brien, J O Dell, G Oganesyan, G H Ogin, J J Oh, S H Oh, F Ohme, H Ohta, M A Okada, C Olivetto, P Oppermann, R J Oram, B O Reilly, R G Ormiston, L F Ortega, R O Shaughnessy, S Ossokine, C Osthelder, D J Ottaway, H Overmier, B J Owen, A E Pace, G Pagano, M A Page, G Pagliaroli, A Pai, S A Pai, J R Palamos, O Palashov, C Palomba, H Pan, P K Panda, T H Pang, C Pankow, F Pannarale, B C Pant, F Paoletti, A Paoli, A Paolone, W Parker, D Pascucci, A Pasqualetti, R Passaquieti, D Passuello, M Patel, B Patricelli, E Payne, T C Pechsiri, M Pedraza, M Pegoraro, A Pele, S Penn, A Perego, C J Perez, C Perigois, A Perreca, S Perries, J Petermann, D Petterson, H P Pfeiffer, K A Pham, K S Phukon, O J Piccinni, M Pichot, M Piendibene, F Piergiovanni, L Pierini, V Pierro, G Pillant, F Pilo, L Pinard, I M Pinto, K Piotrzkowski, M Pirello, M Pitkin, E Placidi, W Plastino, C Pluchar, R Poggiani, E Polini, D Y T Pong, S Ponrathnam, P Popolizio, E K Porter, A Poverman, J Powell, M Pracchia, K Prasai, R Prasanna, G Pratten, T Prestegard, M Principe, G A Prodi, L Prokhorov, P Prosposito, L Prudenzi, A Puecher, M Punturo, F Puosi, P Puppo, M Purrer, H Qi, V Quetschke, P J Quinonez, R Quitzow James, F J Raab, G Raaijmakers, H Radkins, N Radulesco, P Raffai, H Rafferty, S X Rail, S Raja, C Rajan, B Rajbhandari, M Rakhmanov, K E Ramirez, T D Ramirez, A Ramos Buades, J Rana, K Rao, P Rapagnani, U D Rapol, B Ratto, V Raymond, M Razzano, J Read, T Regimbau, L Rei, S Reid, D H Reitze, P Rettegno, F Ricci, C J Richardson, J W Richardson, L Richardson, P M Ricker, G Riemenschneider, K Riles, M Rizzo, N A Robertson, A Rocchi, J A Rocha, S Rodriguez, R D Rodriguez Soto, L Rolland, J G Rollins, V J Roma, M Romanelli, F Robinet, R Romano, C L Romel, A Romero, I M Romero Shaw, J H Romie, S Ronchini, C A Rose, D Rose, K Rose, M J B Rosell, D Rosinska, S G Rosofsky, M P Ross, S Rowan, S J Rowlinson, Santosh Roy, Soumen Roy, P Ruggi, K Ryan, S Sachdev, T Sadecki, J Sadiq, M Sakellariadou, O S Salafia, L Salconi, M Saleem, A Samajdar, E J Sanchez, J H Sanchez, L E Sanchez, N Sanchis Gual, J R Sanders, L Sandles, K A Santiago, E Santos, T R Saravanan, N Sarin, B Sassolas, B S Sathyaprakash, O Sauter, R L Savage, V Savant, D Sawant, S Sayah, D Schaetzl, P Schale, M Scheel, J Scheuer, A Schindler Tyka, P Schmidt, R Schnabel, R M S Schofield, A Schonbeck, E Schreiber, B W Schulte, B F Schutz, O Schwarm, E Schwartz, J Scott, S M Scott, M Seglar Arroyo, E Seidel, D Sellers, A S Sengupta, N Sennett, D Sentenac, V Sequino, A Sergeev, Y Setyawati, T Shaffer, M S Shahriar, S Shariffi, A Sharma, P Sharma, P Shawhan, H Shen, M Shikauchi, R Shink, D H Shoemaker, D M Shoemaker, K Shukla, S ShyamSundar, M Sieniawska, D Sigg, L P Singer, D Singh, N Singh, A Singha, A Singhal, A M Sintes, V Sipala, V Skliris, B J J Slagmolen, T J Slaven Blair, J Smetana, J R Smith, R J E Smith, S N Somala, E J Son, K Soni, S Soni, B Sorazu, V Sordini, F Sorrentino, N Sorrentino, R Soulard, T Souradeep, E Sowell, A P Spencer, M Spera, A K Srivastava, V Srivastava, K Staats, C Stachie, D A Steer, J Steinho, M Steinke, J Steinlechner, S Steinlechner, D Steinmeyer, S P Stevenson, G Stolle McAllister, D J Stops, M Stover, K A Strain, G Stratta, A Strunk, R Sturani, A L Stuver, J Sudbeck, S Sudhagar, V Sudhir, H G Suh, T Z Summerscales, H Sun, L Sun, S Sunil, A Sur, J Suresh, P J Sutton, B L Swinkels, M J Szczepanczyk, M Tacca, S C Tait, C Talbot, A J Tanasijczuk, D B Tanner, D Tao, A Tapia, E N Tapia San Martin, J D Tasson, R Taylor, R Tenorio, L Terkowski, M P Thirugnanasambandam, L M Thomas, M Thomas, P Thomas, J E Thompson, S R Thondapu, K A Thorne, E Thrane, Shubhanshu Tiwari, Srishti Tiwari, V Tiwari, K Toland, A E Tolley, M Tonelli, Z Tornasi, A Torres Forne, C I Torrie, I Tosta e Melo, D Toyra, A T Tran, A Trapananti, F Travasso, G Traylor, M C Tringali, A Tripathee, A Trovato, R J Trudeau, D S Tsai, K W Tsang, M Tse, R Tso, L Tsukada, D Tsuna, T Tsutsui, M Turconi, A S Ubhi, R P Udall, K Ueno, D Ugolini, C S Unnikrishnan, A L Urban, S A Usman, A C Utina, H Vahlbruch, G Vajente, A Vajpeyi, G Valdes, M Valentini, V Valsan, N van Bakel, M van Beuzekom, J F J van den Brand, C Van Den Broeck, D C Vander Hyde, L van der Schaaf, J V van Heijningen, M Vardaro, A F Vargas, V Varma, S Vass, M Vasuth, A Vecchio, G Vedovato, J Veitch, P J Veitch, K Venkateswara, J Venneberg, G Venugopalan, D Verkindt, Y Verma, D Veske, F Vetrano, A Vicere, A D Viets, A Vijaykumar, V Villa Ortega, J -Y Vinet, S Vitale, T Vo, H Vocca, C Vorvick, S P Vyatchanin, A R Wade, L E Wade, M Wade, R C Walet, M Walker, G S Wallace, L Wallace, S Walsh, J Z Wang, S Wang, W H Wang, Y F Wang, R L Ward, J Warner, M Was, N Y Washington, J Watchi, B Weaver, L Wei, M Weinert, A J Weinstein, R Weiss, F Wellmann, L Wen, P Wessels, J W Westhouse, K Wette, J T Whelan, D D White, L V White, B F Whiting, C Whittle, D M Wilken, D Williams, M J Williams, A R Williamson, J L Willis, B Willke, D J Wilson, M H Wimmer, W Winkler, C C Wipf, G Woan, J Woehler, J K Wofford, I C F Wong, J Wrangel, J L Wright, D S Wu, D M Wysocki, L Xiao, H Yamamoto, L Yang, Y Yang, Z Yang, M J Yap, D W Yeeles, A Yoon, Hang Yu, Haocun Yu, S H R Yuen, A Zadrozny, M Zanolin, T Zelenova, J -P Zendri, M Zevin, J Zhang, L Zhang, R Zhang, T Zhang, C Zhao, G Zhao, Y Zheng, M Zhou, Z Zhou, X J Zhu, A B Zimmerman, Y Zlochower, M E Zucker, and J Zweizig
Subjects: Astronomy
Abstract: We report on gravitational wave discoveries from compact binary coalescences detected by Advanced LIGO and Advanced Virgo in the first half of the third observing run (O3a) between 1 April 2019 15:00 UTC and 1 October 2019 15:00 UTC. By imposing a false-alarm-rate threshold of two per year in each of the four search pipelines that constitute our search, we present 39 candidate gravitational wave events. At this threshold, we expect a contamination fraction of less than 10%. Of these, 26 candidate events were reported previously in near real-time through GCN Notices and Circulars; 13 are reported here for the first time. The catalog contains events whose sources are black hole binary mergers up to a redshift of ~ 0.8, as well as events whose components could not be unambiguously identified as black holes or neutron stars. For the latter group, we are unable to determine the nature based on estimates of the component masses and spins from gravitational wave data alone. The range of candidate event masses which are unambiguously identified as binary black holes (both objects ≥ 3 M⨀) is increased compared to GWTC-1, with total masses from ∼ 14M⨀ for GW190924 021846 to ∼ 150M⨀ for GW190521. For the first time, this catalog includes binary systems with significantly asymmetric mass ratios, which had not been observed in data taken before April 2019. We also find that 11 of the 39 events detected since April 2019 have positive effective inspiral spins under our default prior (at 90% credibility), while none exhibit negative effective inspiral spin. Given the increased sensitivity of Advanced LIGO and Advanced Virgo, the detection of 39 candidate events in ∼26 weeks of data (∼1.5 per week) is consistent with GWTC-1.
Published: 2021
Full Text: View/download PDF

24. All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems

Author: R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, A. Adams, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, D. Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, K. M. Aleman, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, J. M. Antelis, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud, S. M. Aronson, K. G. Arun, Y. Asali, G. Ashton, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. AultONeal, C. Austin, S. Babak, F. Badaracco, M. K. M. Bader, S. Bae, A. M. Baer, S. Bagnasco, Y. Bai, J. Baird, M. Ball, G. Ballardin, S. W. Ballmer, M. Bals, A. Balsamo, G. Baltus, S. Banagiri, D. Bankar, R. S. Bankar, J. C. Barayoga, C. Barbieri, B. C. Barish, D. Barker, P. Barneo, S. Barnum, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, M. A. Barton, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, A. C. Baylor, M. Bazzan, B. Bécsy, V. M. Bedakihale, M. Bejger, I. Belahcene, V. Benedetto, D. Beniwal, M. G. Benjamin, T. F. Bennett, J. D. Bentley, M. BenYaala, F. Bergamin, B. K. Berger, S. Bernuzzi, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, A. V. Bhandari, D. Bhattacharjee, S. Bhaumik, J. Bidler, I. A. Bilenko, G. Billingsley, R. Birney, O. Birnholtz, S. Biscans, M. Bischi, S. Biscoveanu, A. Bisht, B. Biswas, M. Bitossi, M.-A. Bizouard, J. K. Blackburn, J. Blackman, C. D. Blair, D. G. Blair, R. M. Blair, F. Bobba, N. Bode, M. Boer, G. Bogaert, M. Boldrini, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, R. Bork, V. Boschi, N. Bose, S. Bose, V. Bossilkov, V. Boudart, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, A. Branch, M. Branchesi, J. E. Brau, M. Breschi, T. Briant, J. H. Briggs, A. Brillet, M. Brinkmann, P. Brockill, A. F. Brooks, J. Brooks, D. D. Brown, S. Brunett, G. Bruno, R. Bruntz, J. Bryant, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, R. Buscicchio, D. Buskulic, R. L. Byer, L. Cadonati, M. Caesar, G. Cagnoli, C. Cahillane, H. W. Cain III, J. Calderón Bustillo, J. D. Callaghan, T. A. Callister, E. Calloni, J. B. Camp, M. Canepa, M. Cannavacciuolo, K. C. Cannon, H. Cao, J. Cao, E. Capote, G. Carapella, F. Carbognani, J. B. Carlin, M. F. Carney, M. Carpinelli, G. Carullo, T. L. Carver, J. Casanueva Diaz, C. Casentini, G. Castaldi, S. Caudill, M. Cavaglià, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, E. Cesarini, W. Chaibi, K. Chakravarti, B. Champion, C.-H. Chan, C. Chan, C. L. Chan, K. Chandra, P. Chanial, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, K. Chatziioannou, A. Chen, H. Y. Chen, J. Chen, X. Chen, Y. Chen, Z. Chen, H. Cheng, C. K. Cheong, H. Y. Cheung, H. Y. Chia, F. Chiadini, R. Chierici, A. Chincarini, M. L. Chiofalo, A. Chiummo, G. Cho, H. S. Cho, S. Choate, R. K. Choudhary, S. Choudhary, N. Christensen, Q. Chu, S. Chua, K. W. Chung, G. Ciani, P. Ciecielag, M. Cieślar, M. Cifaldi, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, E. N. Clark, J. A. Clark, L. Clarke, P. Clearwater, S. Clesse, F. Cleva, E. Coccia, P.-F. Cohadon, D. E. Cohen, L. Cohen, M. Colleoni, C. G. Collette, M. Colpi, C. M. Compton, M. Constancio Jr, L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, S. Corezzi, K. R. Corley, N. Cornish, D. Corre, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M. W. Coughlin, S. B. Coughlin, J.-P. Coulon, S. T. Countryman, B. Cousins, P. Couvares, P. B. Covas, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D. E. Creighton, T. D. Creighton, A. W. Criswell, M. Croquette, S. G. Crowder, J. R. Cudell, T. J. Cullen, A. Cumming, R. Cummings, E. Cuoco, M. Curyło, T. Dal Canton, G. Dálya, A. Dana, L. M. DaneshgaranBajastani, B. D’Angelo, S. L. Danilishin, S. D’Antonio, K. Danzmann, C. Darsow-Fromm, A. Dasgupta, L. E. H. Datrier, V. Dattilo, I. Dave, M. Davier, G. S. Davies, D. Davis, E. J. Daw, R. Dean, D. DeBra, M. Deenadayalan, J. Degallaix, M. De Laurentis, S. Deléglise, V. Del Favero, F. De Lillo, N. De Lillo, W. Del Pozzo, L. M. DeMarchi, F. De Matteis, V. D’Emilio, N. Demos, T. Dent, A. Depasse, R. De Pietri, R. De Rosa, C. De Rossi, R. DeSalvo, R. De Simone, S. Dhurandhar, M. C. Díaz, Jr, N. A. Didio, T. Dietrich, L. Di Fiore, C. Di Fronzo, C. Di Giorgio, F. Di Giovanni, T. Di Girolamo, A. Di Lieto, B. Ding, S. Di Pace, I. Di Palma, F. Di Renzo, A. K. Divakarla, A. Dmitriev, Z. Doctor, L. D’Onofrio, F. Donovan, K. L. Dooley, S. Doravari, I. Dorrington, M. Drago, J. C. Driggers, Y. Drori, Z. Du, J.-G. Ducoin, P. Dupej, O. Durante, D. D’Urso, P.-A. Duverne, S. E. Dwyer, P. J. Easter, M. Ebersold, G. Eddolls, B. Edelman, T. B. Edo, O. Edy, A. Effler, J. Eichholz, S. S. Eikenberry, M. Eisenmann, R. A. Eisenstein, A. Ejlli, L. Errico, R. C. Essick, H. Estellés, D. Estevez, Z. Etienne, T. Etzel, M. Evans, T. M. Evans, B. E. Ewing, V. Fafone, H. Fair, S. Fairhurst, X. Fan, A. M. Farah, S. Farinon, B. Farr, W. M. Farr, N. W. Farrow, E. J. Fauchon-Jones, M. Favata, M. Fays, M. Fazio, J. Feicht, M. M. Fejer, F. Feng, E. Fenyvesi, D. L. Ferguson, A. Fernandez-Galiana, I. Ferrante, T. A. Ferreira, F. Fidecaro, P. Figura, I. Fiori, M. Fishbach, R. P. Fisher, J. M. Fishner, R. Fittipaldi, V. Fiumara, R. Flaminio, E. Floden, E. Flynn, H. Fong, J. A. Font, B. Fornal, P. W. F. Forsyth, A. Franke, S. Frasca, F. Frasconi, C. Frederick, Z. Frei, A. Freise, R. Frey, P. Fritschel, V. V. Frolov, G. G. Fronzé, P. Fulda, M. Fyffe, H. A. Gabbard, B. U. Gadre, S. M. Gaebel, J. R. Gair, J. Gais, S. Galaudage, R. Gamba, D. Ganapathy, A. Ganguly, S. G. Gaonkar, B. Garaventa, C. García-Núñez, C. García-Quirós, F. Garufi, B. Gateley, S. Gaudio, V. Gayathri, G. Gemme, A. Gennai, J. George, L. Gergely, P. Gewecke, S. Ghonge, Abhirup Ghosh, Archisman Ghosh, Shaon Ghosh, Shrobana Ghosh, Sourath Ghosh, B. Giacomazzo, L. Giacoppo, J. A. Giaime, K. D. Giardina, D. R. Gibson, C. Gier, M. Giesler, P. Giri, F. Gissi, J. Glanzer, A. E. Gleckl, P. Godwin, E. Goetz, R. Goetz, N. Gohlke, B. Goncharov, G. González, A. Gopakumar, M. Gosselin, R. Gouaty, B. Grace, A. Grado, M. Granata, V. Granata, A. Grant, S. Gras, P. Grassia, C. Gray, R. Gray, G. Greco, A. C. Green, R. Green, A. M. Gretarsson, E. M. Gretarsson, D. Griffith, W. Griffiths, H. L. Griggs, G. Grignani, A. Grimaldi, E. Grimes, S. J. Grimm, H. Grote, S. Grunewald, P. Gruning, J. G. Guerrero, G. M. Guidi, A. R. Guimaraes, G. Guixé, H. K. Gulati, H.-K. Guo, Y. Guo, Anchal Gupta, Anuradha Gupta, P. Gupta, E. K. Gustafson, R. Gustafson, F. Guzman, L. Haegel, O. Halim, E. D. Hall, E. Z. Hamilton, G. Hammond, M. Haney, J. Hanks, C. Hanna, M. D. Hannam, O. A. Hannuksela, H. Hansen, T. J. Hansen, J. Hanson, T. Harder, T. Hardwick, K. Haris, J. Harms, G. M. Harry, I. W. Harry, D. Hartwig, B. Haskell, R. K. Hasskew, C.-J. Haster, K. Haughian, F. J. Hayes, J. Healy, A. Heidmann, M. C. Heintze, J. Heinze, J. Heinzel, H. Heitmann, F. Hellman, P. Hello, A. F. Helmling-Cornell, G. Hemming, M. Hendry, I. S. Heng, E. Hennes, J. Hennig, M. H. Hennig, F. Hernandez Vivanco, M. Heurs, S. Hild, P. Hill, A. S. Hines, S. Hochheim, D. Hofman, J. N. Hohmann, A. M. Holgado, N. A. Holland, I. J. Hollows, Z. J. Holmes, K. Holt, D. E. Holz, P. Hopkins, J. Hough, E. J. Howell, C. G. Hoy, D. Hoyland, A. Hreibi, Y. Hsu, Y. Huang, M. T. Hübner, A. D. Huddart, E. A. Huerta, B. Hughey, V. Hui, S. Husa, S. H. Huttner, R. Huxford, T. Huynh-Dinh, B. Idzkowski, A. Iess, H. Inchauspe, C. Ingram, G. Intini, M. Isi, K. Isleif, B. R. Iyer, V. JaberianHamedan, T. Jacqmin, S. J. Jadhav, S. P. Jadhav, A. L. James, A. Z. Jan, K. Jani, K. Janssens, N. N. Janthalur, P. Jaranowski, D. Jariwala, R. Jaume, A. C. Jenkins, M. Jeunon, W. Jia, J. Jiang, G. R. Johns, A. W. Jones, D. I. Jones, J. D. Jones, P. Jones, R. Jones, R. J. G. Jonker, L. Ju, J. Junker, C. V. Kalaghatgi, V. Kalogera, B. Kamai, S. Kandhasamy, G. Kang, J. B. Kanner, Y. Kao, S. J. Kapadia, D. P. Kapasi, C. Karathanasis, S. Karki, R. Kashyap, M. Kasprzack, W. Kastaun, S. Katsanevas, E. Katsavounidis, W. Katzman, T. Kaur, K. Kawabe, F. Kéfélian, D. Keitel, J. S. Key, S. Khadka, F. Y. Khalili, I. Khan, S. Khan, E. A. Khazanov, N. Khetan, M. Khursheed, N. Kijbunchoo, C. Kim, J. C. Kim, K. Kim, W. S. Kim, Y.-M. Kim, C. Kimball, P. J. King, M. Kinley-Hanlon, R. Kirchhoff, J. S. Kissel, L. Kleybolte, S. Klimenko, A. M. Knee, T. D. Knowles, E. Knyazev, P. Koch, G. Koekoek, S. Koley, P. Kolitsidou, M. Kolstein, K. Komori, V. Kondrashov, A. Kontos, N. Koper, M. Korobko, M. Kovalam, D. B. Kozak, V. Kringel, N. V. Krishnendu, A. Królak, G. Kuehn, F. Kuei, A. Kumar, P. Kumar, Rahul Kumar, Rakesh Kumar, K. Kuns, S. Kwang, D. Laghi, E. Lalande, T. L. Lam, A. Lamberts, M. Landry, B. B. Lane, R. N. Lang, J. Lange, B. Lantz, I. La Rosa, A. Lartaux-Vollard, V. Mangano, J. L. Mango, G. L. Mansell, M. Manske, M. Mantovani, M. Mapelli, F. Marchesoni, F. Marion, Z. Mark, S. Márka, Z. Márka, C. Markakis, A. S. Markosyan, A. Markowitz, E. Maros, A. Marquina, S. Marsat, F. Martelli, I. W. Martin, R. M. Martin, M. Martinez, V. Martinez, K. Martinovic, D. V. Martynov, E. J. Marx, H. Masalehdan, K. Mason, E. Massera, A. Masserot, T. J. Massinger, M. Masso-Reid, S. Mastrogiovanni, A. Matas, M. Mateu-Lucena, F. Matichard, M. Matiushechkina, N. Mavalvala, J. J. McCann, R. McCarthy, D. E. McClelland, P. McClincy, S. McCormick, L. McCuller, G. I. McGhee, S. C. McGuire, C. McIsaac, J. McIver, D. J. McManus, T. McRae, S. T. McWilliams, D. Meacher, M. Mehmet, A. K. Mehta, A. Melatos, D. A. Melchor, G. Mendell, A. Menendez-Vazquez, C. S. Menoni, R. A. Mercer, L. Mereni, K. Merfeld, E. L. Merilh, J. D. Merritt, M. Merzougui, S. Meshkov, C. Messenger, C. Messick, P. M. Meyers, F. Meylahn, A. Mhaske, A. Miani, H. Miao, I. Michaloliakos, C. Michel, H. Middleton, L. Milano, A. L. Miller, M. Millhouse, J. C. Mills, E. Milotti, M. C. Milovich-Goff, O. Minazzoli, Y. Minenkov, Ll. M. Mir, A. Mishkin, C. Mishra, T. Mishra, T. Mistry, S. Mitra, V. P. Mitrofanov, G. Mitselmakher, R. Mittleman, Geoffrey Mo, K. Mogushi, S. R. P. Mohapatra, S. R. Mohite, I. Molina, M. Molina-Ruiz, M. Mondin, M. Montani, C. J. Moore, D. Moraru, F. Morawski, A. More, C. Moreno, G. Moreno, S. Morisaki, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Arunava Mukherjee, D. Mukherjee, Soma Mukherjee, Subroto Mukherjee, N. Mukund, A. Mullavey, J. Munch, E. A. Muñiz, P. G. Murray, R. Musenich, S. L. Nadji, A. Nagar, I. Nardecchia, L. Naticchioni, B. Nayak, R. K. Nayak, B. F. Neil, J. Neilson, G. Nelemans, T. J. N. Nelson, M. Nery, A. Neunzert, K. Y. Ng, S. W. S. Ng, C. Nguyen, P. Nguyen, T. Nguyen, S. A. Nichols, S. Nissanke, F. Nocera, M. Noh, M. Norman, C. North, L. K. Nuttall, J. Oberling, B. D. O’Brien, J. O’Dell, G. Oganesyan, J. J. Oh, S. H. Oh, F. Ohme, H. Ohta, M. A. Okada, C. Olivetto, R. Oram, B. O’Reilly, R. G. Ormiston, N. D. Ormsby, L. F. Ortega, R. O’Shaughnessy, E. O’Shea, S. Ossokine, C. Osthelder, D. J. Ottaway, H. Overmier, A. E. Pace, G. Pagano, M. A. Page, G. Pagliaroli, A. Pai, S. A. Pai, J. R. Palamos, O. Palashov, C. Palomba, P. K. Panda, P. T. H. Pang, C. Pankow, F. Pannarale, B. C. Pant, F. Paoletti, A. Paoli, A. Paolone, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, M. Patel, B. Patricelli, E. Payne, T. C. Pechsiri, M. Pedraza, M. Pegoraro, A. Pele, S. Penn, A. Perego, A. Pereira, T. Pereira, C. J. Perez, C. Périgois, A. Perreca, S. Perriès, J. Petermann, D. Petterson, H. P. Pfeiffer, K. A. Pham, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, L. Pierini, V. Pierro, G. Pillant, F. Pilo, L. Pinard, I. M. Pinto, B. J. Piotrzkowski, K. Piotrzkowski, M. Pirello, M. Pitkin, E. Placidi, W. Plastino, C. Pluchar, R. Poggiani, E. Polini, D. Y. T. Pong, S. Ponrathnam, P. Popolizio, E. K. Porter, J. Powell, M. Pracchia, T. Pradier, A. K. Prajapati, K. Prasai, R. Prasanna, G. Pratten, T. Prestegard, M. Principe, G. A. Prodi, L. Prokhorov, P. Prosposito, L. Prudenzi, A. Puecher, M. Punturo, F. Puosi, P. Puppo, M. Pürrer, H. Qi, V. Quetschke, P. J. Quinonez, R. Quitzow-James, F. J. Raab, G. Raaijmakers, H. Radkins, N. Radulesco, P. Raffai, S. X. Rail, S. Raja, C. Rajan, K. E. Ramirez, T. D. Ramirez, A. Ramos-Buades, J. Rana, P. Rapagnani, U. D. Rapol, B. Ratto, V. Raymond, N. Raza, M. Razzano, J. Read, L. A. Rees, T. Regimbau, L. Rei, S. Reid, D. H. Reitze, P. Relton, P. Rettegno, F. Ricci, C. J. Richardson, J. W. Richardson, L. Richardson, P. M. Ricker, G. Riemenschneider, K. Riles, M. Rizzo, N. A. Robertson, R. Robie, F. Robinet, A. Rocchi, J. A. Rocha, S. Rodriguez, R. D. Rodriguez-Soto, L. Rolland, J. G. Rollins, V. J. Roma, M. Romanelli, R. Romano, C. L. Romel, A. Romero, I. M. Romero-Shaw, J. H. Romie, C. A. Rose, D. Rosińska, S. G. Rosofsky, M. P. Ross, S. Rowan, S. J. Rowlinson, Santosh Roy, Soumen Roy, D. Rozza, P. Ruggi, K. Ryan, S. Sachdev, T. Sadecki, J. Sadiq, M. Sakellariadou, O. S. Salafia, L. Salconi, M. Saleem, F. Salemi, A. Samajdar, E. J. Sanchez, J. H. Sanchez, L. E. Sanchez, N. Sanchis-Gual, J. R. Sanders, A. Sanuy, T. R. Saravanan, N. Sarin, B. Sassolas, H. Satari, O. Sauter, R. L. Savage, V. Savant, D. Sawant, H. L. Sawant, S. Sayah, D. Schaetzl, M. Scheel, J. Scheuer, A. Schindler-Tyka, P. Schmidt, R. Schnabel, M. Schneewind, R. M. S. Schofield, A. Schönbeck, B. W. Schulte, B. F. Schutz, E. Schwartz, J. Scott, S. M. Scott, M. Seglar-Arroyo, E. Seidel, D. Sellers, A. Sergeev, A. S. Sengupta, N. Sennett, D. Sentenac, E. G. Seo, V. Sequino, Y. Setyawati, T. Shaffer, M. S. Shahriar, B. Shams, S. Sharifi, A. Sharma, P. Sharma, P. Shawhan, N. S. Shcheblanov, H. Shen, M. Shikauchi, R. Shink, D. H. Shoemaker, D. M. Shoemaker, K. Shukla, S. ShyamSundar, M. Sieniawska, D. Sigg, L. P. Singer, D. Singh, N. Singh, A. Singha, A. M. Sintes, V. Sipala, V. Skliris, B. J. J. Slagmolen, T. J. Slaven-Blair, J. Smetana, J. R. Smith, R. J. E. Smith, S. N. Somala, E. J. Son, K. Soni, S. Soni, B. Sorazu, V. Sordini, F. Sorrentino, N. Sorrentino, R. Soulard, T. Souradeep, E. Sowell, V. Spagnuolo, A. P. Spencer, M. Spera, A. K. Srivastava, V. Srivastava, K. Staats, C. Stachie, D. A. Steer, J. Steinlechner, S. Steinlechner, D. J. Stops, M. Stover, K. A. Strain, L. C. Strang, G. Stratta, A. Strunk, R. Sturani, A. L. Stuver, J. Südbeck, S. Sudhagar, V. Sudhir, H. G. Suh, T. Z. Summerscales, H. Sun, L. Sun, S. Sunil, A. Sur, J. Suresh, P. J. Sutton, B. L. Swinkels, M. J. Szczepańczyk, P. Szewczyk, M. Tacca, S. C. Tait, C. Talbot, A. J. Tanasijczuk, D. B. Tanner, D. Tao, A. Tapia, E. N. Tapia San Martin, J. D. Tasson, R. Tenorio, L. Terkowski, M. Test, M. P. Thirugnanasambandam, M. Thomas, P. Thomas, J. E. Thompson, S. R. Thondapu, K. A. Thorne, E. Thrane, Shubhanshu Tiwari, Srishti Tiwari, V. Tiwari, K. Toland, A. E. Tolley, M. Tonelli, A. Torres-Forné, C. I. Torrie, I. Tosta e Melo, D. Töyrä, A. Trapananti, F. Travasso, G. Traylor, M. C. Tringali, A. Tripathee, L. Troiano, A. Trovato, R. J. Trudeau, D. S. Tsai, D. Tsai, K. W. Tsang, M. Tse, R. Tso, L. Tsukada, D. Tsuna, T. Tsutsui, M. Turconi, A. S. Ubhi, R. P. Udall, K. Ueno, D. Ugolini, C. S. Unnikrishnan, A. L. Urban, S. A. Usman, A. C. Utina, H. Vahlbruch, G. Vajente, A. Vajpeyi, G. Valdes, M. Valentini, V. Valsan, N. van Bakel, M. van Beuzekom, J. F. J. van den Brand, C. Van Den Broeck, D. C. Vander-Hyde, L. van der Schaaf, J. V. van Heijningen, M. Vardaro, A. F. Vargas, V. Varma, M. Vasúth, A. Vecchio, G. Vedovato, J. Veitch, P. J. Veitch, K. Venkateswara, J. Venneberg, G. Venugopalan, D. Verkindt, Y. Verma, D. Veske, F. Vetrano, A. Viceré, A. D. Viets, V. Villa-Ortega, J.-Y. Vinet, S. Vitale, T. Vo, H. Vocca, E. R. G. von Reis, J. von Wrangel, C. Vorvick, S. P. Vyatchanin, L. E. Wade, M. Wade, K. J. Wagner, R. C. Walet, M. Walker, G. S. Wallace, L. Wallace, S. Walsh, J. Z. Wang, W. H. Wang, R. L. Ward, J. Warner, M. Was, N. Y. Washington, J. Watchi, B. Weaver, L. Wei, M. Weinert, A. J. Weinstein, R. Weiss, C. M. Weller, F. Wellmann, L. Wen, P. Weßels, J. W. Westhouse, K. Wette, J. T. Whelan, D. D. White, B. F. Whiting, C. Whittle, D. Wilken, D. Williams, M. J. Williams, A. R. Williamson, J. L. Willis, B. Willke, D. J. Wilson, W. Winkler, C. C. Wipf, T. Wlodarczyk, G. Woan, J. Woehler, J. K. Wofford, I. C. F. Wong, D. S. Wu, D. M. Wysocki, L. Xiao, H. Yamamoto, F. W. Yang, L. Yang, Y. Yang, Z. Yang, M. J. Yap, D. W. Yeeles, A. B. Yelikar, M. Ying, A. Yoon, Hang Yu, Haocun Yu, A. Zadroźny, M. Zanolin, T. Zelenova, J.-P. Zendri, M. Zevin, J. Zhang, L. Zhang, R. Zhang, T. Zhang, C. Zhao, G. Zhao, Y. Zhao, Z. Zhou, X. J. Zhu, M. E. Zucker, and J. Zweizig
Subjects: Physics Of Elementary Particles And Fields, Instrumentation And Photography, Astrophysics
Abstract: Rapidly spinning neutron stars are promising sources of continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter under extreme conditions. A significant fraction of the known pulsar population belongs to binary systems. Searching for unknown neutron stars in binary systems requires specialized algorithms to address unknown orbital frequency modulations. We present a search for continuous gravitational waves emitted by neutron stars in binary systems in early data from the third observing run of the Advanced LIGO and Advanced Virgo detectors using the semicoherent, GPU-accelerated, binaryskyhough pipeline. The search analyzes the most sensitive frequency band of the LIGO detectors, 50–300 Hz. Binary orbital parameters are split into four regions, comprising orbital periods of three to 45 days and projected semimajor axes of two to 40 light seconds. No detections are reported. We estimate the sensitivity of the search using simulated continuous wave signals, achieving the most sensitive results to date across the analyzed parameter space.
Published: 2021
Full Text: View/download PDF

25. Towards Sustainable Reservoir Management Under Future Climate: A Modelling Approach

Author: Sharip, Zati, primary, Hassan, A. J., additional, and M. Noh, M. N., additional
Published: 2019
Full Text: View/download PDF

26. GW190521: A Binary Black Hole Merger with a Total Mass of 150 Mꙩ

Author: R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Ar`ene, N. Arnaud, S. M. Aronson, K. G. Arun, Y. Asali, S. Ascenzi, G. Ashton, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. AultONeal, C. Austin, V. Avendano, S. Babak, P. Bacon, F. Badaracco, M. K. M. Bader, S. Bae, A. M. Baer, J. Baird, F. Baldaccini, G. Ballardin, S.W. Ballmer, A. Bals, A. Balsamo, G. Baltus, S. Banagiri, D. Bankar, R. S. Bankar, J. C. Barayoga, C. Barbieri, B. C. Barish, D. Barker, K. Barkett, P. Barneo, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, M. Bazzan, B. Becsy, M. Bejger, I. Belahcene, A. S. Bell, D. Beniwal, M. G. Benjamin, J. D. Bentley, F. Bergamin, B. K. Berger, G. Bergmann, S. Bernuzzi, C. P. L. Berry, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, A. V. Bhandari, J. Bidler, E. Biggs, I. A. Bilenko, G. Billingsley, R. Birney, O. Birnholtz, S. Biscans, M. Bischi, S. Biscoveanu, A. Bisht, G. Bissenbayeva, M. Bitossi, M. A. Bizouard, J. K. Blackburn, J. Blackman, C. D. Blair, D. G. Blair, R. M. Blair, F. Bobba, N. Bode, M. Boer, Y. Boetzel, G. Bogaert, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, R. Bork, V. Boschi, S. Bose, V. Bossilkov, J. Bosveld, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, M. Branchesi, J. E. Brau, M. Breschi, T. Briant, J. H. Briggs, F. Brighenti, A. Brillet, M. Brinkmann, P. Brockill, A. F. Brooks, J. Brooks, D. D. Brown, S. Brunett, G. Bruno, R. Bruntz, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, R. Buscicchio, D. Buskulic, R. L. Byer, M. Cabero, L. Cadonati, G. Cagnoli, C. Cahillane, J. Calderón Bustillo, J. D. Callaghan, T. A. Callister, E. Calloni, J. B. Camp, M. Canepa, K. C. Cannon, H. Cao, J. Cao, G. Carapella, F. Carbognani, S. Caride, M. F. Carney, G. Carullo, J. Casanueva Diaz, C. Casentini, J. Castañeda, S. Caudill, M. Cavagli`a, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, E. Cesarini, O. Chaibi, K. Chakravarti, C. Chan, M. Chan, K. Chandra, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, K. Chatziioannou, H. Y. Chen, X. Chen, Y. Chen, H.-P. Cheng, C. K. Cheong, H. Y. Chia, F. Chiadini, R. Chierici, A. Chincarini, A. Chiummo, G. Cho, H. S. Cho, M. Cho, N. Christensen, Q. Chu, S. Chua, K.W. Chung, S. Chung, G. Ciani, P. Ciecielag, M. Cieślar, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, J. A. Clark, P. Clearwater, S. Clesse, F. Cleva, E. Coccia, P.-F. Cohadon, D. Cohen, M. Colleoni, C. G. Collette, C. Collins, M. Colpi, M. Constancio Jr, L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, S. Corezzi, K. R. Corley, N. Cornish, D. Corre, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M.W. Coughlin, S. B. Coughlin, J.-P. Coulon, S. T. Countryman, P. Couvares, P. B. Covas, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D. E. Creighton, T. D. Creighton, J. Cripe, M. Croquette, S. G. Crowder, J.-R. Cudell, T. J. Cullen, A. Cumming, R. Cummings, L. Cunningham, E. Cuoco, M. Curylo, T. Dal Canton, G. Dálya, A. Dana, L. M. Daneshgaran-Bajastani, B. D’Angelo, S. L. Danilishin, S. D’Antonio, K. Danzmann, C. Darsow-Fromm, A. Dasgupta, L. E. H. Datrier, V. Dattilo, I. Dave, M. Davier, G. S. Davies, D. Davis, E. J. Daw, D. DeBra, M. Deenadayalan, J. Degallaix, M. De Laurentis, S. Del´eglise, M. Delfavero, N. De Lillo, W. Del Pozzo, L. M. DeMarchi, V. D’Emilio, N. Demos, T. Dent, R. De Pietri, R. De Rosa, C. De Rossi, R. DeSalvo, O. de Varona, S. Dhurandhar, M. C. Díaz, M. Diaz-Ortiz Jr, T. Dietrich, L. Di Fiore, C. Di Fronzo, C. Di Giorgio, F. Di Giovanni, M. Di Giovanni, T. Di Girolamo, A. Di Lieto, B. Ding, S. Di Pace, I. Di Palma, F. Di Renzo, A. K. Divakarla, A. Dmitriev, Z. Doctor, F. Donovan, K. L. Dooley, S. Doravari, I. Dorrington, T. P. Downes, M. Drago, J. C. Driggers, Z. Du, J.-G. Ducoin, P. Dupej, O. Durante, D. D’Urso, S. E. Dwyer, P. J. Easter, G. Eddolls, B. Edelman, T. B. Edo, O. Edy, A. Effler, P. Ehrens, J. Eichholz, S. S. Eikenberry, M. Eisenmann, R. A. Eisenstein, A. Ejlli, L. Errico, R. C. Essick, H. Estelles, D. Estevez, Z. B. Etienne, T. Etzel, M. Evans, T. M. Evans, B. E. Ewing, V. Fafone, S. Fairhurst, X. Fan, S. Farinon, B. Farr, W. M. Farr, E. J. Fauchon-Jones, M. Favata, M. Fays, M. Fazio, J. Feicht, M. M. Fejer, F. Feng, E. Fenyvesi, D. L. Ferguson, A. Fernandez-Galiana, I. Ferrante, E. C. Ferreira, T. A. Ferreira, F. Fidecaro, I. Fiori, D. Fiorucci, M. Fishbach, R. P. Fisher, R. Fittipaldi, M. Fitz-Axen, V. Fiumara, R. Flaminio, E. Floden, E. Flynn, H. Fong, J. A. Font, P.W. F. Forsyth, J.-D. Fournier, S. Frasca, F. Frasconi, Z. Frei, A. Freise, R. Frey, V. Frey, P. Fritschel, V. V. Frolov, G. Fronz`e, P. Fulda, M. Fyffe, H. A. Gabbard, B. U. Gadre, S. M. Gaebel, J. R. Gair, S. Galaudage, D. Ganapathy, A. Ganguly, S. G. Gaonkar, C. García-Quirós, F. Garufi, B. Gateley, S. Gaudio, V. Gayathri, G. Gemme, E. Genin, A. Gennai, D. George, J. George, L. Gergely, S. Ghonge, Abhirup Ghosh, Archisman Ghosh, S. Ghosh, B. Giacomazzo, J. A. Giaime, K. D. Giardina, D. R. Gibson, C. Gier, K. Gill, J. Glanzer, J. Gniesmer, P. Godwin, E. Goetz, R. Goetz, N. Gohlke, B. Goncharov, G. González, A. Gopakumar, S. E. Gossan, M. Gosselin, R. Gouaty, B. Grace, A. Grado, 5 M. Granata, A. Grant, S. Gras, P. Grassia, C. Gray, R. Gray, G. Greco, A. C. Green, R. Green, E. M. Gretarsson, H. L. Griggs, G. Grignani, A. Grimaldi, S. J. Grimm, H. Grote, P. Gruning, G. M. Guidi, A. R. Guimaraes, G. Guix´e, H. K. Gulati, Y. Guo, A. Gupta, Anchal Gupta, P. Gupta, E. K. Gustafson, R. Gustafson, L. Haegel, O. Halim, E. D. Hall, E. Z. Hamilton, G. Hammond, M. Haney, M. M. Hanke, J. Hanks, C. Hanna, M. D. Hannam, O. A. Hannuksela, T. J. Hansen, J. Hanson, T. Harder, T. Hardwick, K. Haris, J. Harms, G. M. Harry, I.W. Harry, R. K. Hasskew, C.-J. Haster, K. Haughian, F. J. Hayes, J. Healy, A. Heidmann, M. C. Heintze, J. Heinze, H. Heitmann, F. Hellman, P. Hello, G. Hemming, M. Hendry, I. S. Heng, E. Hennes, J. Hennig, M. Heurs, S. Hild, T. Hinderer, S. Y. Hoback, S. Hochheim, E. Hofgard, D. Hofman, A. M. Holgado, N. A. Holland, K. Holt, D. E. Holz, P. Hopkins, C. Horst, J. Hough, E. J. Howell, C. G. Hoy, Y. Huang, M. T. Hübner, E. A. Huerta, D. Huet, B. Hughey, V. Hui, S. Husa, S. H. Huttner, R. Huxford, T. Huynh-Dinh, B. Idzkowski, A. Iess, H. Inchauspe, C. Ingram, G. Intini, J.-M. Isac, M. Isi, B. R. Iyer, T. Jacqmin, S. J. Jadhav, S. P. Jadhav, A. L. James, K. Jani, N. N. Janthalur, P. Jaranowski, D. Jariwala, R. Jaume, A. C. Jenkins, J. Jiang, G. R. Johns, N. K. Johnson-McDaniel, A.W. Jones, D. I. Jones, J. D. Jones, P. Jones, R. Jones, R. J. G. Jonker, L. Ju, J. Junker, C. V. Kalaghatgi, V. Kalogera, B. Kamai, S. Kandhasamy, G. Kang, J. B. Kanner, S. J. Kapadia, S. Karki, R. Kashyap, M. Kasprzack, W. Kastaun, S. Katsanevas, E. Katsavounidis, W. Katzman, S. Kaufer, K. Kawabe, F. K´ef´elian, D. Keitel, A. Keivani, R. Kennedy, J. S. Key, S. Khadka, F. Y. Khalili, I. Khan, S. Khan, Z. A. Khan, E. A. Khazanov, N. Khetan, M. Khursheed, N. Kijbunchoo, Chunglee Kim, G. J. Kim, J. C. Kim, K. Kim, W. Kim, W. S. Kim, Y.-M. Kim, C. Kimball, P. J. King, M. Kinley-Hanlon, R. Kirchhoff, J. S. Kissel, L. Kleybolte, S. Klimenko, T. D. Knowles, E. Knyazev, P. Koch, S. M. Koehlenbeck, G. Koekoek, S. Koley, V. Kondrashov, A. Kontos, N. Koper, M. Korobko, W. Z. Korth, M. Kovalam, D. B. Kozak, V. Kringel, N. V. Krishnendu, A. Królak, N. Krupinski, G. Kuehn, A. Kumar, P. Kumar, Rahul Kumar, Rakesh Kumar, S. Kumar, L. Kuo, A. Kutynia, B. D. Lackey, D. Laghi, E. Lalande, T. L. Lam, A. Lamberts, M. Landry, B. B. Lane, R. N. Lang, J. Lange, B. Lantz, R. K. Lanza, I. La Rosa, A. Lartaux-Vollard, P. D. Lasky, M. Laxen, A. Lazzarini, C. Lazzaro, P. Leaci, S. Leavey, Y. K. Lecoeuche, C. H. Lee, H. M. Lee, H.W. Lee, J. Lee, K. Lee, J. Lehmann, N. Leroy, N. Letendre, Y. Levin, A. K. Y. Li, J. Li, K. li, T. G. F. Li, X. Li, F. Linde, S. D. Linker, J. N. Linley, T. B. Littenberg, J. Liu, X. Liu, M. Llorens-Monteagudo, R. K. L. Lo, A. Lockwood, L. T. London, A. Longo, M. Lorenzini, V. Loriette, M. Lormand, G. Losurdo, J. D. Lough, C. O. Lousto, G. Lovelace, H. Lück, D. Lumaca, A. P. Lundgren, Y. Ma, R. Macas, S. Macfoy, M. MacInnis, D. M. Macleod, I. A. O. MacMillan, A. Macquet, I. Magaña Hernandez, F. Magaña-Sandoval, R. M. Magee, E. Majorana, I. Maksimovic, A. Malik, N. Man, V. Mandic, V. Mangano, G. L. Mansell, M. Manske, M. Mantovani, M. Mapelli, F. Marchesoni, F. Marion, S. Márka, Z. Márka, C. Markakis, A. S. Markosyan, A. Markowitz, E. Maros, A. Marquina, S. Marsat, F. Martelli, I.W. Martin, R. M. Martin, V. Martinez, D. V. Martynov, H. Masalehdan, K. Mason, E. Massera, A. Masserot, T. J. Massinger, M. Masso-Reid, S. Mastrogiovanni, A. Matas, F. Matichard, N. Mavalvala, E. Maynard, J. J. McCann, R. McCarthy, D. E. McClelland, S. McCormick, L. McCuller, S. C. McGuire, C. McIsaac, J. McIver, D. J. McManus, T. McRae, S. T. McWilliams, D. Meacher, G. D. Meadors, M. Mehmet, A. K. Mehta, E. Mejuto Villa, A. Melatos, G. Mendell, R. A. Mercer, L. Mereni, K. Merfeld, E. L. Merilh, J. D. Merritt, M. Merzougui, S. Meshkov, C. Messenger, C. Messick, R. Metzdorff, P. M. Meyers, F. Meylahn, A. Mhaske, A. Miani, H. Miao, I. Michaloliakos, C. Michel, H. Middleton, L. Milano, A. L. Miller, M. Millhouse, J. C. Mills, E. Milotti, M. C. Milovich-Goff, O. Minazzoli, Y. Minenkov, A. Mishkin, C. Mishra, T. Mistry, S. Mitra, V. P. Mitrofanov, G. Mitselmakher, R. Mittleman, G. Mo, K. Mogushi, S. R. P. Mohapatra, S. R. Mohite, M. Molina-Ruiz, M. Mondin, M. Montani, C. J. Moore, D. Moraru, F. Morawski, G. Moreno, S. Morisaki, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Arunava Mukherjee, D. Mukherjee, S. Mukherjee, Subroto Mukherjee, N. Mukund, A. Mullavey, J. Munch, E. A. Muñiz, P. G. Murray, A. Nagar, I. Nardecchia, L. Naticchioni, R. K. Nayak, B. F. Neil, J. Neilson, G. Nelemans, T. J. N. Nelson, M. Nery, A. Neunzert, K. Y. Ng, S. Ng, C. Nguyen, P. Nguyen, D. Nichols, S. A. Nichols, S. Nissanke, A. Nitz, F. Nocera, M. Noh, C. North, D. Nothard, L. K. Nuttall, J. Oberling, B. D. O’Brien, G. Oganesyan, G. H. Ogin, J. J. Oh, S. H. Oh, F. Ohme, H. Ohta, M. A. Okada, M. Oliver, C. Olivetto, P. Oppermann, Richard J. Oram, B. O’Reilly, R. G. Ormiston, L. F. Ortega, R. O’Shaughnessy, S. Ossokine, C. Osthelder, D. J. Ottaway, H. Overmier, B. J. Owen, A. E. Pace, G. Pagano, M. A. Page, G. Pagliaroli, A. Pai, S. A. Pai, J. R. Palamos, O. Palashov, C. Palomba, H. Pan, P. K. Panda, P. T. H. Pang, C. Pankow, F. Pannarale, B. C. Pant 6, F. Paoletti, A. Paoli, A. Parida, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, B. Patricelli, E. Payne, B. L. Pearlstone, T. C. Pechsiri, A. J. Pedersen, M. Pedraza, A. Pele, S. Penn, A. Perego, C. J. Perez, C. Perigois, A. Perreca, S. Perries, J. Petermann, H. P. Pfeiffer, M. Phelps, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, V. Pierro, G. Pillant, L. Pinard, I. M. Pinto, K. Piotrzkowski, M. Pirello, M. Pitkin, W. Plastino, R. Poggiani, D. Y. T. Pong, S. Ponrathnam, P. Popolizio, E. K. Porter, J. Powell, A. K. Prajapati, K. Prasai, R. Prasanna, G. Pratten, T. Prestegard, M. Principe, G. A. Prodi, L. Prokhorov, M. Punturo, P. Puppo, M. Pürrer, H. Qi, V. Quetschke, P. J. Quinonez, F. J. Raab, G. Raaijmakers, H. Radkins, N. Radulesco, P. Raffai, H. Rafferty, S. Raja, C. Rajan, B. Rajbhandari, M. Rakhmanov, K. E. Ramirez, A. Ramos-Buades, Javed Rana, K. Rao, P. Rapagnani, V. Raymond, M. Razzano, J. Read, T. Regimbau, L. Rei, S. Reid, D. H. Reitze, P. Rettegno, F. Ricci, C. J. Richardson, J.W. Richardson, P. M. Ricker, G. Riemenschneider, K. Riles, M. Rizzo, N. A. Robertson, F. Robinet, A. Rocchi, R. D. Rodriguez-Soto, L. Rolland, J. G. Rollins, V. J. Roma, M. Romanelli, R. Romano, C. L. Romel, I. M. Romero-Shaw, J. H. Romie, C. A. Rose, D. Rose, K. Rose, D. Rosińska, S. G. Rosofsky, M. P. Ross, S. Rowan, S. J. Rowlinson, P. K. Roy, Santosh Roy, Soumen Roy, P. Ruggi, G. Rutins, K. Ryan, S. Sachdev, T. Sadecki, M. Sakellariadou, O. S. Salafia, L. Salconi, M. Saleem, F. Salemi, A. Samajdar, E. J. Sanchez, L. E. Sanchez, N. Sanchis-Gual, J. R. Sanders, K. A. Santiago, E. Santos, N. Sarin, B. Sassolas, B. S. Sathyaprakash, O. Sauter, R. L. Savage, V. Savant, D. Sawant, S. Sayah, D. Schaetzl, P. Schale, M. Scheel, J. Scheuer 14 P. Schmidt, R. Schnabel, R. M. S. Schofield, A. Schönbeck, E. Schreiber, B.W. Schulte, B. F. Schutz, O. Schwarm, E. Schwartz, J. Scott, S. M. Scott, E. Seidel, D. Sellers, A. S. Sengupta, N. Sennett, D. Sentenac, V. Sequino, A. Sergeev, Y. Setyawati, D. A. Shaddock, T. Shaffer, S. Sharifi, M. S. Shahriar, A. Sharma, P. Sharma, P. Shawhan, H. Shen, M. Shikauchi, R. Shink, D. H. Shoemaker, D. M. Shoemaker, K. Shukla, S. ShyamSundar, K. Siellez, M. Sieniawska, D. Sigg, L. P. Singer, D. Singh, N. Singh, A. Singha, A. Singhal, A. M. Sintes, V. Sipala, V. Skliris, B. J. J. Slagmolen, T. J. Slaven-Blair, J. Smetana, J. R. Smith, R. J. E. Smith, S. Somala, E. J. Son, S. Soni, B. Sorazu, V. Sordini, F. Sorrentino, T. Souradeep, E. Sowell, A. P. Spencer, M. Spera, A. K. Srivastava, V. Srivastava, K. Staats, C. Stachie, M. Standke, D. A. Steer, M. Steinke, J. Steinlechner, S. Steinlechner, D. Steinmeyer, S. Stevenson, D. Stocks, D. J. Stops, M. Stover, K. A. Strain, G. Stratta, A. Strunk, R. Sturani, A. L. Stuver, S. Sudhagar, V. Sudhir, T. Z. Summerscales, L. Sun, S. Sunil, A. Sur, J. Suresh, P. J. Sutton, B. L. Swinkels, M. J. Szczepańczyk, M. Tacca, S. C. Tait, C. Talbot, A. J. Tanasijczuk, D. B. Tanner, D. Tao, M. Tápai, A. Tapia, E. N. Tapia San Martin, J. D. Tasson, R. Taylor, R. Tenorio, L. Terkowski, M. P. Thirugnanasambandam, M. Thomas, P. Thomas, J. E. Thompson, S. R. Thondapu, K. A. Thorne, E. Thrane, C. L. Tinsman, T. R. Saravanan, Shubhanshu Tiwari, S. Tiwari, V. Tiwari, K. Toland, M. Tonelli, Z. Tornasi, A. Torres-Forne, C. I. Torrie, I. Tosta e Melo, D. Töyrä, F. Travasso, G. Traylor, M. C. Tringali, A. Tripathee, A. Trovato, R. J. Trudeau, K.W. Tsang, M. Tse, R. Tso, L. Tsukada, D. Tsuna, T. Tsutsui, M. Turconi, A. S. Ubhi, R. Udall, K. Ueno, D. Ugolini, C. S. Unnikrishnan, A. L. Urban, S. A. Usman, A. C. Utina, H. Vahlbruch, G. Vajente, G. Valdes, M. Valentini, N. van Bakel, M. van Beuzekom, J. F. J. van den Brand, C. Van Den Broeck, D. C. Vander-Hyde, L. van der Schaaf, J. V. Van Heijningen, A. A. van Veggel, M. Vardaro, V. Varma, S. Vass, M. Vasúth, A. Vecchio, G. Vedovato, J. Veitch, P. J. Veitch, K. Venkateswara, G. Venugopalan, D. Verkindt, D. Veske, F. Vetrano, A. Vicere, A. D. Viets, S. Vinciguerra, D. J. Vine, J.-Y. Vinet, S. Vitale, Francisco Hernandez Vivanco, T. Vo, H. Vocca, C. Vorvick, S. P. Vyatchanin, A. R. Wade, L. E. Wade, M. Wade, R. Walet, M. Walker, G. S.Wallace, L.Wallace, S.Walsh, J. Z.Wang, S.Wang, W. H.Wang, R. L.Ward, Z. A.Warden, J.Warner, M.Was, J. Watchi, B.Weaver, L.-W.Wei, M.Weinert, A. J. Weinstein, R.Weiss, F.Wellmann, L.Wen, P. Weßels, J.W. Westhouse, K. Wette, J. T. Whelan, B. F. Whiting, C. Whittle, D. M. Wilken, D. Williams, A. Williamson, J. L. Willis, B. Willke, W. Winkler, C. C. Wipf, H. Wittel, G. Woan, J. Woehler, J. K. Wofford, I. C. F. Wong, J. L. Wright, D. S. Wu, D. M. Wysocki, L. Xiao, H. Yamamoto, L. Yang, Y. Yang, Z. Yang, M. J. Yap, M. Yazback, D.W. Yeeles, Hang Yu, Haocun Yu, S. H. R. Yuen, A. K. Zadrożny, A. Zadrożny, M. Zanolin, T. Zelenova, J.-P. Zendri, M. Zevin, J. Zhang, L. Zhang, T. Zhang, C. Zhao, G. Zhao, M. Zhou, Z. Zhou, X. J. Zhu, A. B. Zimmerman, M. E. Zucker, and J. Zweizig
Subjects: Physics Of Elementary Particles And Fields, Astrophysics
Abstract: On May 21, 2019 at 03:02:29 UTC Advanced LIGO and Advanced Virgo observed a short duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise ratio of 14.7, and an estimated false-alarm rate of 1 in 4900 yr using a search sensitive to generic transients. If GW190521 is from a quasicircular binary inspiral, then the detected signal is consistent with the merger of two black holes with masses of 85 (+21,−14) Mꙩ and 66 (+17,−18) Mꙩ (90% credible intervals). We infer that the primary black hole mass lies within the gap produced by (pulsational) pair-instability supernova processes, with only a 0.32% probability of being below 65 M⊙. We calculate the mass of the remnant to be 142 (+28,−16) Mꙩ, which can be considered an intermediate mass black hole (IMBH). The luminosity distance of the source is 5.3 (+2.4,−2.6) Gpc, corresponding to a redshift of 0.82 (+0.28,−0.34) . The inferred rate of mergers similar to GW190521 is 0.13 (+0.30,−0.11) Gpc^(−3) per yr.
Published: 2020
Full Text: View/download PDF

27. Properties and Astrophysical Implications of the 150 M Binary Black Hole Merger GW190521

Author: R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud, S. M. Aronson, K. G. Arun, Y. Asali, S. Ascenzi, G. Ashton, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. AultONeal, C. Austin, V. Avendano, S. Babak, P. Bacon, F. Badaracco, M. K. M. Bader, S. Bae, A. M. Baer, J. Baird, F. Baldaccini, G. Ballardin, S. W. Ballmer, A. Bals, A. Balsamo, G. Baltus, S. Banagiri, D. Bankar, R. S. Bankar, J. C. Barayoga, C. Barbieri, B. C. Barish, D. Barker, K. Barkett, P. Barneo, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, M. Bazzan, B. Bécsy, M. Bejger, I. Belahcene, A. S. Bell, D. Beniwal, M. G. Benjamin, J. D. Bentley, F. Bergamin, B. K. Berger, G. Bergmann, S. Bernuzzi, C. P. L. Berry, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, A. V. Bhandari, J. Bidler, E. Biggs, I. A. Bilenko, G. Billingsley, R. Birney, O. Birnholtz, S. Biscans, M. Bischi, S. Biscoveanu, A. Bisht, G. Bissenbayeva, M. Bitossi, M. A. Bizouard, J. K. Blackburn, J. Blackman, C. D. Blair, D. G. Blair, R. M. Blair, F. Bobba, N. Bode, M. Boer, Y. Boetzel, G. Bogaert, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, R. Bork, V. Boschi, S. Bose, V. Bossilkov, J. Bosveld, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, M. Branchesi, J. E. Brau, M. Breschi, T. Briant, J. H. Briggs, F. Brighenti, A. Brillet, M. Brinkmann, P. Brockill, A. F. Brooks, J. Brooks, D. D. Brown, S. Brunett, G. Bruno, R. Bruntz, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, R. Buscicchio, D. Buskulic, R. L. Byer, M. Cabero, L. Cadonati, G. Cagnoli, C. Cahillane, J. Calderón Bustillo, J. D. Callaghan, T. A. Callister, E. Calloni, J. B. Camp, M. Canepa, K. C. Cannon, H. Cao, J. Cao, G. Carapella, F. Carbognani, S. Caride, M. F. Carney, G. Carullo, J. Casanueva Diaz, C. Casentini, J. Castañeda, S. Caudill, M. Cavaglià, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, E. Cesarini, O. Chaibi, K. Chakravarti, C. Chan, M. Chan, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, K. Chatziioannou, H. Y. Chen, X. Chen, Y. Chen, H.-P. Cheng, C. K. Cheong, H. Y. Chia, F. Chiadini, R. Chierici, A. Chincarini, A. Chiummo, G. Cho, H. S. Cho, M. Cho, N. Christensen, Q. Chu, S. Chua, K. W. Chung, S. Chung, G. Ciani, P. Ciecielag, M. Cieślar, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, J. A. Clark, P. Clearwater, S. Clesse, F. Cleva, E. Coccia, P.-F. Cohadon, D. Cohen, M. Colleoni, C. G. Collette, C. Collins, M. Colpi, M. Constancio Jr, L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, S. Corezzi, K. R. Corley, N. Cornish, D. Corre, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M. W. Coughlin, S. B. Coughlin, J.-P. Coulon, S. T. Countryman, P. Couvares, P. B. Covas, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D. E. Creighton, T. D. Creighton, J. Cripe, M. Croquette, S. G. Crowder, J.-R. Cudell, T. J. Cullen, A. Cumming, R. Cummings, L. Cunningham, E. Cuoco, M. Curylo, T. Dal Canton, G. Dálya, A. Dana, L. M. Daneshgaran-Bajastani, B. D’Angelo, S. L. Danilishin, S. D’Antonio, K. Danzmann, C. Darsow-Fromm, A. Dasgupta, L. E. H. Datrier, V. Dattilo, I. Dave, M. Davier, G. S. Davies, D. Davis, E. J. Daw, D. DeBra, M. Deenadayalan, J. Degallaix, M. De Laurentis, S. Deléglise, M. Delfavero, N. De Lillo, W. Del Pozzo, L. M. DeMarchi, V. D’Emilio, N. Demos, T. Dent, R. De Pietri, R. De Rosa, C. De Rossi, R. DeSalvo, O. de Varona, S. Dhurandhar, M. C. Díaz, M. Diaz-Ortiz Jr, T. Dietrich, L. Di Fiore, C. Di Fronzo, C. Di Giorgio, F. Di Giovanni, M. Di Giovanni, T. Di Girolamo, A. Di Lieto, B. Ding, S. Di Pace, I. Di Palma, F. Di Renzo, A. K. Divakarla, A. Dmitriev, Z. Doctor, F. Donovan, K. L. Dooley, S. Doravari, I. Dorrington, T. P. Downes, M. Drago, J. C. Driggers, Z. Du, J.-G. Ducoin, P. Dupej, O. Durante, D. D’Urso, S. E. Dwyer, P. J. Easter, G. Eddolls, B. Edelman, T. B. Edo, O. Edy, A. Effler, P. Ehrens, J. Eichholz, S. S. Eikenberry, M. Eisenmann, R. A. Eisenstein, A. Ejlli, L. Errico, R. C. Essick, H. Estelles, D. Estevez, Z. B. Etienne, T. Etzel, M. Evans, T. M. Evans, B. E. Ewing, V. Fafone, S. Fairhurst, X. Fan, S. Farinon, B. Farr, W. M. Farr, E. J. Fauchon-Jones, M. Favata, M. Fays, M. Fazio, J. Feicht, M. M. Fejer, F. Feng, E. Fenyvesi, D. L. Ferguson, A. Fernandez-Galiana, I. Ferrante, E. C. Ferreira, T. A. Ferreira, F. Fidecaro, I. Fiori, D. Fiorucci, M. Fishbach, R. P. Fisher, R. Fittipaldi, M. Fitz-Axen, V. Fiumara, R. Flaminio, E. Floden, E. Flynn, H. Fong, J. A. Font, P. W. F. Forsyth, J.-D. Fournier, S. Frasca, F. Frasconi, Z. Frei, A. Freise, R. Frey, V. Frey, P. Fritschel, V. V. Frolov, G. Fronzè, P. Fulda, M. Fyffe, H. A. Gabbard, B. U. Gadre, S. M. Gaebel, J. R. Gair, S. Galaudage, D. Ganapathy, S. G. Gaonkar, C. García-Quirós, F. Garufi, B. Gateley, S. Gaudio, V. Gayathri, G. Gemme, E. Genin, A. Gennai, D. George, J. George, L. Gergely, p S. Ghonge, Abhirup Ghosh, Archisman Ghosh, S. Ghosh, B. Giacomazzo, J. A. Giaime, K. D. Giardina, D. R. Gibson, C. Gier, K. Gill, J. Glanzer, J. Gniesmer, P. Godwin, E. Goetz, R. Goetz, N. Gohlke, B. Goncharov, G. González, A. Gopakumar, S. E. Gossan, M. Gosselin, R. Gouaty, B. Grace, A. Grado, M. Granata, A. Grant, S. Gras, P. Grassia, C. Gray, R. Gray, G. Greco, A. C. Green, R. Green, E. M. Gretarsson, H. L. Griggs, G. Grignani, A. Grimaldi, S. J. Grimm, H. Grote, S. Grunewald, P. Gruning, G. M. Guidi, A. R. Guimaraes, G. Guixé, H. K. Gulati, Y. Guo, A. Gupta, Anchal Gupta, P. Gupta, E. K. Gustafson, R. Gustafson, L. Haegel, O. Halim, E. D. Hall, E. Z. Hamilton, G. Hammond, M. Haney, M. M. Hanke, J. Hanks, C. Hanna, M. D. Hannam, O. A. Hannuksela, T. J. Hansen, J. Hanson, T. Harder, T. Hardwick, K. Haris, J. Harms, G. M. Harry, I. W. Harry, R. K. Hasskew, C.-J. Haster, K. Haughian, F. J. Hayes, J. Healy, A. Heidmann, M. C. Heintze, J. Heinze, H. Heitmann, F. Hellman, P. Hello, G. Hemming, M. Hendry, I. S. Heng, E. Hennes, J. Hennig, M. Heurs, S. Hild, T. Hinderer, S. Y. Hoback, S. Hochheim, E. Hofgard, D. Hofman, A. M. Holgado, N. A. Holland, K. Holt, D. E. Holz, P. Hopkins, C. Horst, J. Hough, E. J. Howell, C. G. Hoy, Y. Huang, M. T. Hübner, E. A. Huerta, D. Huet, B. Hughey, V. Hui, S. Husa, S. H. Huttner, R. Huxford, T. Huynh-Dinh, B. Idzkowski, A. Iess, H. Inchauspe, C. Ingram, G. Intini, J.-M. Isac, M. Isi, B. R. Iyer, T. Jacqmin, S. J. Jadhav, S. P. Jadhav, A. L. James, K. Jani, N. N. Janthalur, P. Jaranowski, D. Jariwala, R. Jaume, A. C. Jenkins, J. Jiang, G. R. Johns, N. K. Johnson-McDaniel, A. W. Jones, D. I. Jones, J. D. Jones, P. Jones, R. Jones, R. J. G. Jonker, L. Ju, J. Junker, C. V. Kalaghatgi, V. Kalogera, B. Kamai, S. Kandhasamy, G. Kang, J. B. Kanner, S. J. Kapadia, S. Karki, R. Kashyap, M. Kasprzack, W. Kastaun, S. Katsanevas, E. Katsavounidis, W. Katzman, S. Kaufer, K. Kawabe, F. Kéfélian, D. Keitel, A. Keivani, R. Kennedy, J. S. Key, S. Khadka, F. Y. Khalili, I. Khan, S. Khan, Z. A. Khan, E. A. Khazanov, N. Khetan, M. Khursheed, N. Kijbunchoo, Chunglee Kim, G. J. Kim, J. C. Kim, K. Kim, W. Kim, W. S. Kim, Y.-M. Kim, C. Kimball, P. J. King, M. Kinley-Hanlon, R. Kirchhoff, J. S. Kissel, L. Kleybolte, S. Klimenko, T. D. Knowles, E. Knyazev, P. Koch, S. M. Koehlenbeck, G. Koekoek, S. Koley, V. Kondrashov, A. Kontos, N. Koper, M. Korobko, W. Z. Korth, M. Kovalam, D. B. Kozak, V. Kringel, N. V. Krishnendu, A. Królak, N. Krupinski, G. Kuehn, A. Kumar, P. Kumar, Rahul Kumar, Rakesh Kumar, S. Kumar, L. Kuo, A. Kutynia, B. D. Lackey, D. Laghi, E. Lalande, T. L. Lam, A. Lamberts, M. Landry, B. B. Lane, R. N. Lang, J. Lange, B. Lantz, R. K. Lanza, I. La Rosa, A. Lartaux-Vollard, P. D. Lasky, M. Laxen, A. Lazzarini, C. Lazzaro, P. Leaci, S. Leavey, Y. K. Lecoeuche, C. H. Lee, H. M. Lee, H. W. Lee, J. Lee, K. Lee, J. Lehmann, N. Leroy, N. Letendre, Y. Levin, J. Li, K. li, T. G. F. Li, X. Li, F. Linde, S. D. Linker, J. N. Linley, T. B. Littenberg, p J. Liu, M. Llorens-Monteagudo, R. K. L. Lo, A. Lockwood, L. T. London, A. Longo, M. Lorenzini, V. Loriette, M. Lormand, G. Losurdo, J. D. Lough, C. O. Lousto, G. Lovelace, H. Lück, D. Lumaca, A. P. Lundgren, Y. Ma, R. Macas, S. Macfoy, M. MacInnis, D. M. Macleod, I. A. O. MacMillan, A. Macquet, I. Magaña Hernandez, F. Magaña-Sandoval, R. M. Magee, E. Majorana, I. Maksimovic, A. Malik, N. Man, V. Mandic, V. Mangano, G. L. Mansell, M. Manske, M. Mantovani, M. Mapelli, F. Marchesoni, F. Marion, S. Márka, Z. Márka, C. Markakis, A. S. Markosyan, A. Markowitz, E. Maros, A. Marquina, S. Marsat, F. Martelli, I. W. Martin, R. M. Martin, V. Martinez, D. V. Martynov, H. Masalehdan, K. Mason, E. Massera, A. Masserot, T. J. Massinger, M. Masso-Reid, S. Mastrogiovanni, A. Matas, F. Matichard, N. Mavalvala, E. Maynard, J. J. McCann, R. McCarthy, D. E. McClelland, S. McCormick, L. McCuller, S. C. McGuire, C. McIsaac, J. McIver, D. J. McManus, T. McRae, S. T. McWilliams, D. Meacher, G. D. Meadors, M. Mehmet, A. K. Mehta, E. Mejuto Villa, A. Melatos, G. Mendell, R. A. Mercer, L. Mereni, K. Merfeld, E. L. Merilh, J. D. Merritt, M. Merzougui, S. Meshkov, C. Messenger, C. Messick, R. Metzdorff, P. M. Meyers, F. Meylahn, A. Mhaske, A. Miani, H. Miao, I. Michaloliakos, C. Michel, H. Middleton, L. Milano, A. L. Miller, M. Millhouse, J. C. Mills, E. Milotti, M. C. Milovich-Goff, O. Minazzoli, Y. Minenkov, A. Mishkin, C. Mishra, p F. Linde, J. Liu, T. Mistry, S. Mitra, V. P. Mitrofanov, G. Mitselmakher, R. Mittleman, G. Mo, K. Mogushi, S. R. P. Mohapatra, S. R. Mohite, M. Molina-Ruiz, M. Mondin, M. Montani, C. J. Moore, D. Moraru, F. Morawski, G. Moreno, S. Morisaki, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Arunava Mukherjee, D. Mukherjee, S. Mukherjee, Subroto Mukherjee, N. Mukund, A. Mullavey, J. Munch, E. A. Muñiz, P. G. Murray, A. Nagar, I. Nardecchia, L. Naticchioni, R. K. Nayak, B. F. Neil, J. Neilson, G. Nelemans, T. J. N. Nelson, M. Nery, A. Neunzert, K. Y. Ng, S. Ng, C. Nguyen, P. Nguyen, D. Nichols, S. A. Nichols, S. Nissanke, F. Nocera, M. Noh, C. North, D. Nothard, L. K. Nuttall, J. Oberling, B. D. O’Brien, G. Oganesyan, G. H. Ogin, J. J. Oh, S. H. Oh, F. Ohme, H. Ohta, M. A. Okada, M. Oliver, C. Olivetto, P. Oppermann, Richard J. Oram, B. O’Reilly, R. G. Ormiston, L. F. Ortega, R. O’Shaughnessy, S. Ossokine, C. Osthelder, D. J. Ottaway, H. Overmier, B. J. Owen, A. E. Pace, G. Pagano, M. A. Page, G. Pagliaroli, A. Pai, S. A. Pai, J. R. Palamos, O. Palashov, C. Palomba, H. Pan, P. K. Panda, P. T. H. Pang, C. Pankow, F. Pannarale, B. C. Pant, F. Paoletti, A. Paoli, A. Parida, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, B. Patricelli, E. Payne, B. L. Pearlstone, T. C. Pechsiri, A. J. Pedersen, M. Pedraza, A. Pele, S. Penn, A. Perego, C. J. Perez, C. Périgois, A. Perreca, S. Perriès, J. Petermann, H. P. Pfeiffer, M. Phelps, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, V. Pierro, G. Pillant, L. Pinard, I. M. Pinto, K. Piotrzkowski, M. Pirello, M. Pitkin, W. Plastino, R. Poggiani, D. Y. T. Pong, S. Ponrathnam, P. Popolizio, E. K. Porter, J. Powell, A. K. Prajapati, K. Prasai, R. Prasanna, G. Pratten, T. Prestegard, M. Principe, G. A. Prodi, L. Prokhorov, M. Punturo, P. Puppo, M. Pürrer, H. Qi, V. Quetschke, P. J. Quinonez, F. J. Raab, G. Raaijmakers, H. Radkins, N. Radulesco, P. Raffai, H. Rafferty, S. Raja, C. Rajan, B. Rajbhandari, M. Rakhmanov, K. E. Ramirez, A. Ramos-Buades, Javed Rana, K. Rao, P. Rapagnani, V. Raymond, M. Razzano, J. Read, T. Regimbau, L. Rei, S. Reid, D. H. Reitze, P. Rettegno, F. Ricci, C. J. Richardson, J. W. Richardson, P. M. Ricker, G. Riemenschneider, K. Riles, M. Rizzo, N. A. Robertson, F. Robinet, A. Rocchi, R. D. Rodriguez-Soto, L. Rolland, J. G. Rollins, V. J. Roma, M. Romanelli, R. Romano, C. L. Romel, I. M. Romero-Shaw, J. H. Romie, C. A. Rose, D. Rose, K. Rose, D. Rosińska, S. G. Rosofsky, M. P. Ross, S. Rowan, S. J. Rowlinson, P. K. Roy, Santosh Roy, Soumen Roy, P. Ruggi, G. Rutins, K. Ryan, S. Sachdev, T. Sadecki, M. Sakellariadou, O. S. Salafia, L. Salconi, M. Saleem, A. Samajdar, E. J. Sanchez, L. E. Sanchez, N. Sanchis-Gual, J. R. Sanders, K. A. Santiago, E. Santos, N. Sarin, B. Sassolas, B. S. Sathyaprakash, O. Sauter, R. L. Savage, V. Savant, D. Sawant, S. Sayah, D. Schaetzl, P. Schale, M. Scheel, J. Scheuer, P. Schmidt, R. Schnabel, R. M. S. Schofield, A. Schönbeck, E. Schreiber, B. W. Schulte, B. F. Schutz, O. Schwarm, E. Schwartz, J. Scott, S. M. Scott, E. Seidel, D. Sellers, A. S. Sengupta, N. Sennett, D. Sentenac, V. Sequino, A. Sergeev, Y. Setyawati, D. A. Shaddock, T. Shaffer, M. S. Shahriar, S. Sharifi, A. Sharma, P. Sharma, P. Shawhan, H. Shen, M. Shikauchi, R. Shink, D. H. Shoemaker, D. M. Shoemaker, K. Shukla, S. ShyamSundar, K. Siellez, M. Sieniawska, D. Sigg, L. P. Singer, D. Singh, N. Singh, A. Singha, A. Singhal, A. M. Sintes, V. Sipala, V. Skliris, B. J. J. Slagmolen, T. J. Slaven-Blair, J. Smetana, J. R. Smith, R. J. E. Smith, S. Somala, E. J. Son, S. Soni, B. Sorazu, V. Sordini, F. Sorrentino, T. Souradeep, E. Sowell, A. P. Spencer, M. Spera, A. K. Srivastava, V. Srivastava, K. Staats, C. Stachie, M. Standke, D. A. Steer, M. Steinke, J. Steinlechner, S. Steinlechner, D. Steinmeyer, S. Stevenson, D. Stocks, D. J. Stops, M. Stover, K. A. Strain, G. Stratta, A. Strunk, R. Sturani, A. L. Stuver, S. Sudhagar, V. Sudhir, T. Z. Summerscales, L. Sun, S. Sunil, A. Sur, J. Suresh, P. J. Sutton, B. L. Swinkels, M. J. Szczepańczyk, M. Tacca, S. C. Tait, C. Talbot, A. J. Tanasijczuk, D. B. Tanner, D. Tao, M. Tápai, A. Tapia, E. N. Tapia San Martin, J. D. Tasson, R. Taylor, R. Tenorio, L. Terkowski, M. P. Thirugnanasambandam, M. Thomas, P. Thomas, J. E. Thompson, S. R. Thondapu, K. A. Thorne, E. Thrane, C. L. Tinsman, T. R. Saravanan, Shubhanshu Tiwari, S. Tiwari, V. Tiwari, K. Toland, M. Tonelli, Z. Tornasi, A. Torres-Forné, C. I. Torrie, I. Tosta e Melo, D. Töyrä, E. A. Trail, F. Travasso, G. Traylor, M. C. Tringali, A. Tripathee, A. Trovato, R. J. Trudeau, K. W. Tsang, M. Tse, R. Tso, L. Tsukada, D. Tsuna, T. Tsutsui, M. Turconi, A. S. Ubhi, K. Ueno, D. Ugolini, C. S. Unnikrishnan, A. L. Urban, S. A. Usman, A. C. Utina, H. Vahlbruch, G. Vajente, G. Valdes, M. Valentini, N. van Bakel, M. van Beuzekom, J. F. J. van den Brand, C. Van Den Broeck, D. C. Vander-Hyde, L. van der Schaaf, J. V. Van Heijningen, A. A. van Veggel, M. Vardaro, V. Varma, S. Vass, M. Vasúth, A. Vecchio, G. Vedovato, J. Veitch, P. J. Veitch, K. Venkateswara, G. Venugopalan, D. Verkindt, D. Veske, F. Vetrano, A. Viceré, A. D. Viets, S. Vinciguerra, D. J. Vine, J.-Y. Vinet, S. Vitale, Francisco Hernandez Vivanco, T. Vo, H. Vocca, C. Vorvick, S. P. Vyatchanin, A. R. Wade, L. E. Wade, M. Wade, R. Walet, M. Walker, G. S. Wallace, L. Wallace, S. Walsh, J. Z. Wang, S. Wang, W. H. Wang, R. L. Ward, Z. A. Warden, J. Warner, M. Was, J. Watchi, B. Weaver, L.-W. Wei, M. Weinert, A. J. Weinstein, R. Weiss, F. Wellmann, L. Wen, P. Weßels, J. W. Westhouse, K. Wette, J. T. Whelan, B. F. Whiting, C. Whittle, D. M. Wilken, D. Williams, A. Williamson, J. L. Willis, B. Willke, W. Winkler, C. C. Wipf, H. Wittel, G. Woan, J. Woehler, J. K. Wofford, C. Wong, J. L. Wright, D. S. Wu, D. M. Wysocki, L. Xiao, H. Yamamoto, L. Yang, Y. Yang, Z. Yang, M. J. Yap, M. Yazback, D. W. Yeeles, Hang Yu, Haocun Yu, S. H. R. Yuen, A. K. Zadrożny, A. Zadrożny, M. Zanolin, T. Zelenova, J.-P. Zendri, M. Zevin, J. Zhang, L. Zhang, T. Zhang, C. Zhao, G. Zhao, M. Zhou, Z. Zhou, X. J. Zhu, A. B. Zimmerman, Y. Zlochower, M. E. Zucker, and J. Zweizig
Subjects: Astrophysics, Astronomy
Abstract: The gravitational-wave signal GW190521 is consistent with a binary black hole (BBH) merger source at redshift 0.8 with unusually high component masses, 85 (+21,-14) Mꙩ and 66 (+17,-18) Mꙩ, compared to previously reported events, and shows mild evidence for spin-induced orbital precession. The primary falls in the mass gap predicted by (pulsational) pair-instability supernova theory, in the approximate range 65–120 Mꙩ. The probability that at least one of the black holes in GW190521 is in that range is 99.0%. The final mass of the merger (142 (+28,-16) Mꙩ) classifies it as an intermediate-mass black hole. Under the assumption of a quasi-circular BBH coalescence, we detail the physical properties of GW190521’s source binary and its post-merger remnant, including component masses and spin vectors. Three different waveform models, as well as direct comparison to numerical solutions of general relativity, yield consistent estimates of these properties. Tests of strong-field general relativity targeting the merger-ringdown stages of the coalescence indicate consistency of the observed signal with theoretical predictions. We estimate the merger rate of similar systems to be 0.13 (+0.30,-0.11)Gp/cu.c yr. We discuss the astrophysical implications of GW190521 for stellar collapse and for the possible formation of black holes in the pair-instability mass gap through various channels: via (multiple) stellar coalescences, or via hierarchical mergers of lower-mass black holes in star clusters or in active galactic nuclei. We find it to be unlikely that GW190521 is a strongly lensed signal of a lower-mass black hole binary merger. We also discuss more exotic possible sources for GW190521, including a highly eccentric black hole binary, or a primordial black hole binary.
Published: 2020
Full Text: View/download PDF

28. GW190814: Gravitational Waves from the Coalescence of a 23 Solar Mass Black Hole with a 2.6 Solar Mass Compact Object

Author: Jordan B Camp, Peter Sven Shawhan, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud, S. M. Aronson, K. G. Arun, Y. Asali, S. Ascenzi, G. Ashton, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. AultONeal, C. Austin, V. Avendano, S. Babak, P. Bacon, F. Badaracco, M. K. M. Bader, S. Bae, A. M. Baer, J. Baird, F. Baldaccini, G. Ballardin, S. W. Ballmer, A. Bals, A. Balsamo, G. Baltus, S. Banagiri, D. Bankar, R. S. Bankar, J. C. Barayoga, C. Barbieri, B. C. Barish, D. Barker, K. Barkett, P. Barneo, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, M. Bazzan, B. Bécsy, M. Bejger, I. Belahcene, A. S. Bell, D. Beniwal, M. G. Benjamin, R. Benkel, J. D. Bentley, F. Bergamin, B. K. Berger, G. Bergmann, S. Bernuzzi, C. P. L. Berry, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, A. V. Bhandari, J. Bidler, E. Biggs, I. A. Bilenko, G. Billingsley, R. Birney, O. Birnholtz, S. Biscans, M. Bischi, S. Biscoveanu, A. Bisht, G. Bissenbayeva, M. Bitossi, M. A. Bizouard, J. K. Blackburn, J. Blackman, C. D. Blair, D. G. Blair, R. M. Blair, F. Bobba, N. Bode, M. Boer, Y. Boetzel, G. Bogaert, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, R. Bork, V. Boschi, S. Bose, V. Bossilkov, J. Bosveld, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, M. Branchesi, J. E. Brau, M. Breschi, T. Briant, J. H. Briggs, F. Brighenti, A. Brillet, M. Brinkmann, R. Brito, P. Brockill, A. F. Brooks, J. Brooks, D. D. Brown, S. Brunett, G. Bruno, R. Bruntz, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, D. Buskulic, R. L. Byer, M. Cabero, L. Cadonati, G. Cagnoli, C. Cahillane, Calderón Bustillo, J. D. Callaghan, T. A. Callister, E. Calloni, J. B. Camp, M. Canepa, K. C. Cannon, H. Cao, J. Cao, G. Carapella, F. Carbognani, S. Caride, M. F. Carney, G. Carullo, J. Casanueva Diaz, C. Casentini, J. Castañeda, S. Caudill, M. Cavaglià, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, E. Cesarini, O. Chaibi, K. Chakravarti, C. Chan, M. Chan, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, K. Chatziioannou, H. Y. Chen, X. Chen, Y. Chen, H.-P. Cheng, C. K. Cheong, H. Y. Chia, F. Chiadini, R. Chierici, A. Chincarini, A. Chiummo, G. Cho, H. S. Cho, M. Cho, N. Christensen, Q. Chu, S. Chua, K. W. Chung, S. Chung, G. Ciani, P. Ciecielag, M. Cieślar, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, J. A. Clark, P. Clearwater, S. Clesse, F. Cleva, E. Coccia, P.-F. Cohadon, D. Cohen, M. Colleoni, C. G. Collette, C. Collins, M. Colpi, M. Constancio Jr, L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, S. Corezzi, K. R. Corley, N. Cornish, D. Corre, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M. W. Coughlin, S. B. Coughlin, J.-P. Coulon, S. T. Countryman, P. Couvares, P. B. Covas, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D. E. Creighton, T. D. Creighton, J. Cripe, M. Croquette, S. G. Crowder, J.-R. Cudell, T. J. Cullen, A. Cumming, R. Cummings, L. Cunningham, E. Cuoco, M. Curylo, T. Dal Canton, G. Dálya, A. Dana, L. M. Daneshgaran-Bajastani, B.D’Angelo, S. L. Danilishin, S.D’Antonio, K. Danzmann, C. Darsow-Fromm, A. Dasgupta, L. E. H. Datrier, V. Dattilo, I. Dave, M. Davier, G. S. Davies, D. Davis, E. J. Daw, D. DeBra, M. Deenadayalan, J. Degallaix, M. De Laurentis, S. Deléglise, M. Delfavero, N. De Lillo, W. Del Pozzo, L. M. DeMarchi, V.D’Emilio, N. Demos, T. Dent, R. De Pietri, R. De Rosa, C. De Rossi, R. DeSalvo, O. de Varona, S. Dhurandhar, M. C. Díaz, M. Diaz-Ortiz Jr, T. Dietrich, L. Di Fiore, C. Di Fronzo, C. Di Giorgio, F. Di Giovanni, M. Di Giovanni, T. Di Girolamo, A. Di Lieto, B. Ding, S. Di Pace, I. Di Palma, F. Di Renzo, A. K. Divakarla, A. Dmitriev, Z. Doctor, F. Donovan, K. L. Dooley, S. Doravari, I. Dorrington, T. P. Downes, M. Drago, J. C. Driggers, Z.Du, J.-G. Ducoin, P. Dupej, O. Durante, D.D’Urso, S. E. Dwyer, P. J. Easter, G. Eddolls, B. Edelman, T. B. Edo, O. Edy, A.Effler, P. Ehrens, J. Eichholz, S. S. Eikenberry, M. Eisenmann, R. A. Eisenstein, A. Ejlli, L. Errico, R. C. Essick, H. Estelles, D. Estevez, Z. B. Etienne, T. Etzel, M. Evans, T. M. Evans, B. E. Ewing, V. Fafone, S. Fairhurst, X. Fan, S. Farinon, B. Farr, W. M. Farr, E. J. Fauchon-Jones, M. Favata, M. Fays, M. Fazio, J. Feicht, M. M. Fejer, F. Feng, E. Fenyvesi, D. L. Ferguson, A. Fernandez-Galiana, I. Ferrante, E. C. Ferreira, T. A. Ferreira, F. Fidecaro, I. Fiori, D. Fiorucci, M. Fishbach, R. P. Fisher4, R. Fittipaldi, M. Fitz-Axen, V. Fiumara, R. Flaminio, E. Floden, E. Flynn, H. Fong, J. A. Font, P. W. F. Forsyth, J.-D. Fournier, S. Frasca, F. Frasconi, Z. Frei, A. Freise, R. Frey, V. Frey, P. Fritschel, V. V. Frolov, G. Fronzè, P. Fulda, M. Fyffe, H. A. Gabbard, B. U. Gadre, S. M. Gaebel, J. R. Gair, S. Galaudage, D. Ganapathy, A. Ganguly, S. G. Gaonkar, C. García-Quirós, F. Garufi, B. Gateley, S. Gaudio, V. Gayathri, G. Gemme, E. Genin, A. Gennai, D. George, J. George, L. Gergely, S. Ghonge, Abhirup Ghosh, Archisman Ghosh, S. Ghosh, B. Giacomazzo, J. A. Giaime, K. D. Giardina, D. R. Gibson, C. Gier, K. Gill, J. Glanzer, J. Gniesmer, P. Godwin, E. Goetz, R. Goetz, N. Gohlke, B. Goncharov, G. González, A. Gopakumar, S. E. Gossan, M. Gosselin, R. Gouaty, B. Grace, A. Grado, M. Granata, A. Grant, S. Gras, P. Grassia, C. Gray, R. Gray, G. Greco, A. C. Green, R. Green, E. M. Gretarsson, H. L. Griggs, G. Grignani, A. Grimaldi, S. J. Grimm, H. Grote, S. Grunewald, P. Gruning, G. M. Guidi, A. R. Guimaraes, G. Guixé, H. K. Gulati, Y. Guo, A. Gupta, Anchal Gupta, P. Gupta, E. K. Gustafson, R. Gustafson, L. Haegel, O. Halim, E. D. Hall, E. Z. Hamilton, G. Hammond, M. Haney, M. M. Hanke, J. Hanks, C. Hanna, M. D. Hannam, O. A. Hannuksela, T. J. Hansen, J. Hanson, T. Harder, T. Hardwick, K. Haris, J. Harms, G. M. Harry, I. W. Harry, R. K. Hasskew, C.-J. Haster, K. Haughian, F. J. Hayes, J. Healy, A. Heidmann, M. C. Heintze, J. Heinze, H. Heitmann, F. Hellman, P. Hello, G. Hemming, M. Hendry, I. S. Heng, E. Hennes, J. Hennig, M. Heurs, S. Hild, T. Hinderer, S. Y. Hoback, S. Hochheim, E. Hofgard, D. Hofman, A. M. Holgado, N. A. Holland, K. Holt, D. E. Holz, P. Hopkins, C. Horst, J. Hough, E. J. Howell, C. G. Hoy, Y. Huang, M. T. Hübner, E. A. Huerta, D. Huet, B. Hughey, V. Hui, S. Husa, S. H. Huttner, R. Huxford, T. Huynh-Dinh, B. Idzkowski, A. Iess, H. Inchauspe, C. Ingram, G. Intini, J.-M. Isac, M. Isi, B. R. Iyer, T. Jacqmin, S. J. Jadhav, S. P. Jadhav, A. L. James, K. Jani, N. N. Janthalur, P. Jaranowski, D. Jariwala, R. Jaume, A. C. Jenkins, J. Jiang, G. R. Johns4, N. K. Johnson-McDaniel, A. W. Jones, D. I. Jones, J. D. Jones, P. Jones, R. Jones, R. J. G. Jonker, L.Ju, J. Junker, C. V. Kalaghatgi, V. Kalogera, B. Kamai, S. Kandhasamy, G. Kang, J. B. Kanner, S. J. Kapadia, S. Karki, R. Kashyap, M. Kasprzack, W. Kastaun, S. Katsanevas, E. Katsavounidis, W. Katzman, S. Kaufer, K. Kawabe, F. Kéfélian, D. Keitel, A. Keivani, R. Kennedy, J.S.Key, S. Khadka, F. Y. Khalili, I. Khan, S. Khan, Z. A. Khan, E. A. Khazanov, N. Khetan, M. Khursheed, N. Kijbunchoo, Chunglee Kim, G. J. Kim, J. C. Kim, K. Kim, W. Kim, W.S.Kim, Y.-M. Kim, C. Kimball, P. J. King, M. Kinley-Hanlon, R. Kirchhoff, J. S. Kissel, L. Kleybolte, S. Klimenko, T. D. Knowles, E. Knyazev, P. Koch, S. M. Koehlenbeck, G. Koekoek, S. Koley, V. Kondrashov, A. Kontos, N. Koper, M. Korobko, W. Z. Korth, M. Kovalam, D. B. Kozak, V. Kringel, N. V. Krishnendu, A. Królak, N. Krupinski, G. Kuehn, A. Kumar, P. Kumar, Rahul Kumar, Rakesh Kumar, S. Kumar, L. Kuo, A. Kutynia, B. D. Lackey, D. Laghi, E. Lalande, T. L. Lam, A. Lamberts, M. Landry, P. Landry, B. B. Lane, R. N. Lang, J. Lange, B. Lantz, R. K. Lanza, I. La Rosa, A. Lartaux-Vollard, P. D. Lasky, M. Laxen, A. Lazzarini, C. Lazzaro, P. Leaci, S. Leavey, Y. K. Lecoeuche, C. H. Lee, H. M. Lee, H. W. Lee, J. Lee, K. Lee, J. Lehmann, N. Leroy, N. Letendre, Y. Levin, A. K. Y. Li, J.Li, K. li, T. G. F. Li, X.Li, F. Linde, S. D. Linker, J. N. Linley, T. B. Littenberg, J. Liu, X. Liu, M. Llorens-Monteagudo, R. K. L. Lo, A. Lockwood, L. T. London, A. Longo, M. Lorenzini, V. Loriette, M. Lormand, G. Losurdo, J. D. Lough, C. O. Lousto, G. Lovelace, H. Lück, D. Lumaca, A. P. Lundgren, Y. Ma, R. Macas, S. Macfoy, M. MacInnis, D. M. Macleod, I. A. O. MacMillan, A. Macquet, I. Magaña Hernandez, F. Magaña-Sandoval, R. M. Magee, E. Majorana, I. Maksimovic, A. Malik, N. Man, V. Mandic, V. Mangano, G. L. Mansell, M. Manske, M. Mantovani, M. Mapelli, F. Marchesoni, F. Marion, S. Márka, Z. Márka, C. Markakis, A. S. Markosyan, A. Markowitz, E. Maros, A. Marquina, S. Marsat, F. Martelli, I. W. Martin, R. M. Martin, V. Martinez, D. V. Martynov, H. Masalehdan, K. Mason, E. Massera, A. Masserot, T. J. Massinger, M. Masso-Reid, S. Mastrogiovanni, A. Matas, F. Matichard, N. Mavalvala, E. Maynard, J. J. McCann, R. McCarthy, D. E. McClelland, S. McCormick, L. McCuller, S. C. McGuire, C. McIsaac, J. McIver, D. J. McManus, T. McRae, S. T. McWilliams, D. Meacher, G. D. Meadors, M. Mehmet, A. K. Mehta, E. Mejuto Villa, A. Melatos, G. Mendell, R. A. Mercer, L. Mereni, K. Merfeld, E. L. Merilh, J. D. Merritt80M. Merzougui74 S. Meshkov1 C. Messenger54 C. Messick177 R. Metzdorff81 P. M. Meyers110 F. Meylahn910 A. Mhaske, J. D. Merritt, M. Merzougui, S. Meshkov, C. Messenger, C. Messick, R. Metzdorff, P. M. Meyers, F. Meylahn, A. Mhaske, A. Miani, H. Miao, I. Michaloliakos, C. Michel, H. Middleton, L. Milano, A. L. Miller, M. Millhouse, J. C. Mills, E. Milotti, M. C. Milovich-Goff, O. Minazzoli, Y. Minenkov, A. Mishkin, C. Mishra, T. Mistry, S. Mitra, V. P. Mitrofanov, G. Mitselmakher, R. Mittleman, G. Mo, K. Mogushi, S. R. P. Mohapatra, S. R. Mohite, M. Molina-Ruiz, M. Mondin, M. Montani, C. J. Moore, D. Moraru, F. Morawski, G. Moreno, S. Morisaki, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Arunava Mukherjee, D. Mukherjee, S. Mukherjee, Subroto Mukherjee, N. Mukund, A. Mullavey, J. Munch, E. A. Muñiz, P. G. Murray, A. Nagar, I. Nardecchia, L. Naticchioni, R. K. Nayak, B. F. Neil, J. Neilson, G. Nelemans, T. J. N. Nelson, M. Nery, A. Neunzert, K. Y. Ng, S. Ng, C. Nguyen, P. Nguyen, D. Nichols, S. A. Nichols, S. Nissanke, F. Nocera, M. Noh, C. North, D. Nothard, L. K. Nuttall, J. Oberling, B. D. O’Brien, G. Oganesyan, G. H. Ogin, J. J. Oh, S. H. Oh, F. Ohme, H. Ohta, M. A. Okada, M. Oliver, C. Olivetto, P. Oppermann, Richard J. Oram, B.O’Reilly, R. G. Ormiston, L. F. Ortega, R. O’Shaughnessy, S. Ossokine, C. Osthelder, D. J. Ottaway, H. Overmier, B. J. Owen, A. E. Pace, G. Pagano, M. A. Page, G. Pagliaroli, A. Pai, S. A. Pai, J. R. Palamos, O. Palashov, C. Palomba, H. Pan, P. K. Panda, P. T. H. Pang, C. Pankow, F. Pannarale, B. C. Pant, F. Paoletti, A. Paoli, A. Parida, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, B. Patricelli, E. Payne, B. L. Pearlstone, T. C. Pechsiri, A. J. Pedersen, M. Pedraza, A. Pele, S. Penn, A. Perego, C. J. Perez, C. Périgois, A. Perreca, S. Perriès, J. Petermann, H. P. Pfeiffer, M. Phelps, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, V. Pierro, G. Pillant, L. Pinard, I. M. Pinto, K. Piotrzkowski, M. Pirello, M. Pitkin, W. Plastino, R. Poggiani, D. Y. T. Pong, S. Ponrathnam, P. Popolizio, E. K. Porter, J. Powell, A. K. Prajapati, K. Prasai, R. Prasanna, G. Pratten, T. Prestegard, M. Principe, G. A. Prodi, L. Prokhorov, M. Punturo, P. Puppo, M. Pürrer, H. Qi, V. Quetschke, P. J. Quinonez, F. J. Raab, G. Raaijmakers, H. Radkins, N. Radulesco, P. Raffai, H. Rafferty, S. Raja, C. Rajan, B. Rajbhandari, M. Rakhmanov, K. E. Ramirez, A. Ramos-Buades, Javed Rana, K. Rao, P. Rapagnani, V. Raymond, M. Razzano, J. Read, T. Regimbau, L. Rei, S. Reid, D. H. Reitze, P. Rettegno, F. Ricci, C. J. Richardson, J. W. Richardson, P. M. Ricker, G. Riemenschneider, K. Riles, M. Rizzo, N. A. Robertson, F. Robinet, A. Rocchi, R. D. Rodriguez-Soto, L. Rolland, J. G. Rollins, V. J. Roma, M. Romanelli, R. Romano, C. L. Romel, I. M. Romero-Shaw, J. H. Romie, C. A. Rose, D. Rose, K. Rose, D. Rosińska, S. G. Rosofsky, M. P. Ross, S. Rowan, S. J. Rowlinson, P. K. Roy, Santosh Roy, Soumen Roy, P. Ruggi, G. Rutins, K. Ryan, S. Sachdev, T. Sadecki, M. Sakellariadou, O. S. Salafia, L. Salconi, M. Saleem, F. Salemi, A. Samajdar, E. J. Sanchez, L. E. Sanchez, N. Sanchis-Gual, J. R. Sanders, K. A. Santiago, E. Santos, N. Sarin, B. Sassolas, B. S. Sathyaprakash, O. Sauter, R. L. Savage, V. Savant, D. Sawant, S. Sayah, D. Schaetzl, P. Schale, M. Scheel, J. Scheuer, P. Schmidt, R. Schnabel, R. M. S. Schofield, A. Schönbeck, E. Schreiber, B. W. Schulte, B. F. Schutz, O. Schwarm, E. Schwartz, J. Scott, S. M. Scott, E. Seidel, D. Sellers, A. S. Sengupta, N. Sennett, D. Sentenac, V. Sequino, A. Sergeev, Y. Setyawati, D. A. Shaddock, T. Shaffer, M. S. Shahriar, A. Sharma, P. Sharma, P. Shawhan, H. Shen, M. Shikauchi, R. Shink, D. H. Shoemaker, D. M. Shoemaker, K. Shukla, S. Shyam Sundar, K. Siellez, M. Sieniawska, D. Sigg, L. P. Singer, D. Singh, N. Singh, A. Singha, A. Singhal, A. M. Sintes, V. Sipala, V. Skliris, B. J. J. Slagmolen, T. J. Slaven-Blair, J. Smetana, J. R. Smith, R. J. E. Smith, S. Somala, E. J. Son, S. Soni, B. Sorazu, V. Sordini, F. Sorrentino, T. Souradeep, E. Sowell, A. P. Spencer, M. Spera, A. K. Srivastava, V. Srivastava, K. Staats, C. Stachie, M. Standke, D. A. Steer, J. Steinhoff, M. Steinke, J. Steinlechner, S. Steinlechner, D. Steinmeyer, S. Stevenson, D. Stocks, D. J. Stops, M. Stover, K. A. Strain, G. Stratta, A. Strunk, R. Sturani, A. L. Stuver, S. Sudhagar, V. Sudhir, T. Z. Summerscales, L. Sun, S. Sunil, A. Sur, J. Suresh, P. J. Sutton, B. L. Swinkels, M. J. Szczepańczyk, M. Tacca, S. C. Tait, C. Talbot, A. J. Tanasijczuk, D. B. Tanner, D. Tao, M. Tápai, A. Tapia, E. N. Tapia San Martin, J. D. Tasson, R. Taylor, R. Tenorio, L. Terkowski, M. P. Thirugnanasambandam, M. Thomas, P. Thomas, J. E. Thompson, S. R. Thondapu, K. A. Thorne, E. Thrane, C. L. Tinsman, T. R. Saravanan, Shubhanshu Tiwari, S. Tiwari, V. Tiwari, K. Toland, M. Tonelli, Z. Tornasi, A. Torres-Forné, C. I. Torrie, I. Tosta e Melo, D. Töyrä, E. A. Trail, F. Travasso, G. Traylor, M. C. Tringali, A. Tripathee, A. Trovato, R. J. Trudeau, K. W. Tsang, M. Tse, R. Tso, L. Tsukada, D. Tsuna, T. Tsutsui, M. Turcon, A. S. Ubhi, K. Ueno, D. Ugolini, C. S. Unnikrishnan, A. L. Urban, S. A. Usman, A. C. Utina, H. Vahlbruch, G. Vajente, G. Valdes, M. Valentini, N. van Bakel, M. van Beuzekom, J. F. J. van den Brand, C. Van Den Broeck, D. C. Vander-Hyde, L. van der Schaaf, J. V. Van Heijningen, A. A. van Veggel, M. Vardaro, V. Varma, S. Vass, M. Vasúth, A. Vecchio, G. Vedovato, J. Veitch, P. J. Veitch, K. Venkateswara, G. Venugopalan, D. Verkindt, D. Veske, F. Vetrano, A. Viceré, A. D. Viets, S. Vinciguerra, D. J. Vine, J.-Y. Vinet, S. Vitale, Francisco Hernandez Vivanco, T.Vo, H. Vocca, C. Vorvick, S. P. Vyatchanin, A. R. Wade, L. E. Wade, M. Wade, R. Walet, M. Walker, G. S. Wallace, L. Wallace, S. Walsh, J. Z. Wang, S. Wang, W. H. Wang, R. L. Ward, Z. A. Warden, J. Warner, M. Was, J. Watchi, B. Weaver, L.-W. Wei, M. Weinert, A. J. Weinstein, R. Weiss, F. Wellmann, L. Wen, P. Weßels, J. W. Westhouse, K. Wette, J. T. Whelan, B. F. Whiting, C. Whittle, D. M. Wilken, D. Williams, J. L. Willis, B. Willke, W. Winkler, C. C. Wipf, H. Wittel, G. Woan, J. Woehler, J. K. Wofford, C. Wong, J. L. Wright, D. S. Wu, D. M. Wysocki, L. Xiao, H. Yamamoto, L. Yang, Y. Yang, Z. Yang, M. J. Yap, M. Yazback, D. W. Yeeles, Hang Yu, Haocun Yu, S. H. R. Yuen, A. K. Zadrożny, A. Zadrożny, M. Zanolin, T. Zelenova, J.-P. Zendri, M. Zevin, J. Zhang, L. Zhang, T. Zhang, C. Zhao, G. Zhao, M. Zhou, Z. Zhou, X. J. Zhu, A. B. Zimmerman, M. E. Zucker, and J. Zweizig
Subjects: Astronomy
Abstract: We report the observation of a compact binary coalescence involving a 22.2–24.3 Me black hole and a compact object with a mass of 2.50–2.67Me (all measurements quoted at the 90% credible level). The gravitational-wavesignal, GW190814, was observed during LIGO’s and Virgo’s third observing run on 2019 August 14 at 21:10:39 UTC and has a signal-to-noise ratio of 25 in the three-detector network. The source was localized to18.5 deg2 at a distance of-+2414541Mpc; no electromagnetic counterpart has been confirmed to date. The source has the most unequal mass ratio yet measured with gravitational waves,-+0.1120.0090.008, and its secondary component is either the lightest black hole or the heaviest neutron star ever discovered in a double compact-object system. The dimensionless spin of the primary black hole is tightly constrained to 0.07. Tests of general relativity reveal no measurable deviations from the theory, and its prediction of higher-multipole emission is confirmed at high confidence. We estimate a merger rate density of 1–23 Gpc−3yr−1 for the new class of binary coalescence sources that GW190814 represents. Astrophysical models predict that binaries with mass ratios similar to this event can form through several channels, but are unlikely to have formed in globular clusters. However, the combination of mass ratio, component masses, and the inferred merger rate for this event challenges all current models of the formation and mass distribution of compact-object binaries.
Published: 2020
Full Text: View/download PDF

29. GW190814: Gravitational Waves from the Coalescence of a 23 Solar Mass Black Hole with a 2.6 Solar Mass Compact Object

Author: R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud, S. M. Aronson, K. G. Arun, Y. Asali, S. Ascenzi, G. Ashton, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. AultONeal, C. Austin, V. Avendano, S. Babak, P. Bacon, F. Badaracco, M. K. M. Bader, S. Bae, A. M. Baer, J. Baird, F. Baldaccini, G. Ballardin, S. W. Ballmer, A. Bals, A. Balsamo, G. Baltus, S. Banagiri, D. Bankar, R. S. Bankar, J. C. Barayoga, C. Barbieri, B. C. Barish, D. Barker, K. Barkett, P. Barneo, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, M. Bazzan, B. Bécsy, M. Bejger, I. Belahcene, A. S. Bell, D. Beniwal, M. G. Benjamin, R. Benkel, J. D. Bentley, F. Bergamin, B. K. Berger, G. Bergmann, S. Bernuzzi, C. P. L. Berry, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, A. V. Bhandari, J. Bidler, E. Biggs, I. A. Bilenko, G. Billingsley, I. A. Birney, O. Birnholtz, S. Biscans, M. Bischi, S. Biscoveanu, A. Bisht, G. Bissenbayeva, M. Bitossi, M. A. Bizouard, J. K. Blackburn, J. Blackman, C. D. Blair, D. G. Blair, R. M. Blair, F. Bobba, N. Bode, M. Boer, Y. Boetzel, G. Bogaert, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, R. Bork, V. Boschi, S. Bose, V. Bossilkov, J. Bosveld, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, M. Branchesi, J. E. Brau, M. Breschi, T. Briant, J. H. Briggs, F. Brighenti, A. Brillet, M. Brinkmann, R. Brito, P. Brockill, A. F. Brooks, J. Brooks, D. D. Brown, S. Brunett, G. Bruno, R. Bruntz, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, D. Buskulic, R. L. Byer, M. Cabero, L. Cadonati, G. Cagnoli, C. Cahillane, J. Calderón Bustillo, J. D. Callaghan, T. A. Callister, E. Calloni, J. B. Camp, M. Canepa, K. C. Cannon, H. Cao, J. Cao, G. Carapella, F. Carbognani, S. Caride, M. F. Carney, G. Carullo, J. Casanueva Diaz, C. Casentini, J. Castañeda, S. Caudill, M. Cavaglià, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, E. Cesarini, O. Chaibi, K. Chakravarti, C. Chan, M. Chan, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, K. Chatziioannou, H. Y. Chen, X. Chen, Y. Chen, H.-P. Cheng, C. K. Cheong, H. Y. Chia, F. Chiadini, R. Chierici, A. Chincarini, A. Chiummo, G. Cho, H. S. Cho, M. Cho, N. Christensen, Q. Chu, S. Chua, K. W. Chung, S. Chung, G. Ciani, P. Ciecielag, M. Cieślar, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, J. A. Clark, P. Clearwater, S. Clesse, F. Cleva, E. Coccia, P.-F. Cohadon, D. Cohen, M. Colleoni, C. G. Collette, C. Collins, M. Colpi, M. Constancio Jr., L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, S. Corezzi, K. R. Corley, N. Cornish, D. Corre, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M. W. Coughlin, S. B. Coughlin, J.-P. Coulon, S. T. Countryman, P. Couvares, P. B. Covas, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D. E. Creighton, T. D. Creighton, J. Cripe, M. Croquette, S. G. Crowder, J.-R. Cudell, T. J. Cullen, A. Cumming, R. Cummings, L. Cunningham, E. Cuoco, M. Curylo, T. Dal Canton, G. Dálya, A. Dana, L. M. Daneshgaran-Bajastani, B. D’Angelo, S. L. Danilishin, S. D’Antonio, K. Danzmann, C. Darsow-Fromm, A. Dasgupta, L. E. H. Datrier, V. Dattilo, I. Dave, M. Davier, G. S. Davies, D. Davis, E. J. Daw, D. DeBra, M. Deenadayalan, J. Degallaix, M. De Laurentis, S. Deléglise, M. Delfavero, N. De Lillo, W. Del Pozzo, L. M. DeMarchi, V. D’Emilio, N. Demos, T. Dent, R. De Pietri, R. De Rosa, C. De Rossi, R. DeSalvo, O. de Varona, S. Dhurandhar, M. C. Díaz, M. Diaz-Ortiz Jr., T. Dietrich, L. Di Fiore, C. Di Fronzo, C. Di Giorgio, F. Di Giovanni, M. Di Giovanni, T. Di Girolamo, A. Di Lieto, B. Ding, S. Di Pace, I. Di Palma, F. Di Renzo, A. K. Divakarla, A. Dmitriev, Z. Doctor, F. Donovan, K. L. Dooley, S. Doravari, I. Dorrington, T. P. Downes, M. Drago, J. C. Driggers, Z. Du, J.-G. Ducoin, P. Dupej, O. Durante, D. D’Urso, S. E. Dwyer, P. J. Easter, G. Eddolls, B. Edelman, T. B. Edo, O. Edy, A. Effler, P. Ehrens, J. Eichholz, S. S. Eikenberry, M. Eisenmann, R. A. Eisenstein, A. Ejlli, L. Errico, R. C. Essick, H. Estelles, D. Estevez, Z. B. Etienne, T. Etzel, M. Evans, T. M. Evans, B. E. Ewing, V. Fafone, S. Fairhurst, X. Fan, S. Farinon, B. Farr, W. M. Farr, E. J. Fauchon-Jones, M. Favata, M. Fays, M. Fazio, J. Feicht, M. M. Fejer, F. Feng, E. Fenyvesi, D. L. Ferguson, A. Fernandez-Galiana, I. Ferrante, E. C. Ferreira, T. A. Ferreira, F. Fidecaro, I. Fiori, D. Fiorucci, M. Fishbach, R. P. Fisher, R. Fittipaldi, M. Fitz-Axen, V. Fiumara, R. Flaminio, E. Floden, E. Flynn, H. Fong, J. A. Font, P. W. F. Forsyth, J.-D. Fournier, S. Frasca, F. Frasconi, Z. Frei, A. Freise, R. Frey, V. Frey, P. Fritschel, V. V. Frolov, G. Fronzè, P. Fulda, M. Fyffe, H. A. Gabbard, B. U. Gadre, S. M. Gaebel, J. R. Gair, S. Galaudage, D. Ganapathy, A. Ganguly, S. G. Gaonkar, C. García-Quirós, F. Garufi, B. Gateley, S. Gaudio, V. Gayathri, G. Gemme, E. Genin, A. Gennai, D. George, J. George, L. Gergely, S. Ghonge, Abhirup Ghosh, Archisman Ghosh, S. Ghosh, B. Giacomazzo, J. A. Giaime, K. D. Giardina, D. R. Gibson, C. Gier, K. Gill, J. Glanzer, J. Gniesmer, P. Godwin, E. Goetz, R. Goetz, N. Gohlke, B. Goncharov, G. González, A. Gopakumar, S. E. Gossan, M. Gosselin, R. Gouaty, B. Grace, A. Grado, M. Granata, A. Grant, S. Gras, P. Grassia, C. Gray, R. Gray, G. Greco, A. C. Green, R. Green, E. M. Gretarsson, H. L. Griggs, G. Grignani, A. Grimaldi, S. J. Grimm, H. Grote, S. Grunewald, P. Gruning, G. M. Guidi, A. R. Guimaraes, G. Guixé, H. K. Gulati, Y. Guo, A. Gupta, Anchal Gupta, P. Gupta, E. K. Gustafson, R. Gustafson, L. Haegel, O. Halim, E. D. Hall, E. Z. Hamilton, G. Hammond, M. Haney, M. M. Hanke, J. Hanks, C. Hanna, M. D. Hannam, O. A. Hannuksela, T. J. Hansen, J. Hanson, T. Harder, T. Hardwick, K. Haris, J. Harms, G. M. Harry, I. W. Harry, R. K. Hasskew, C.-J. Haster, K. Haughian, F. J. Hayes, J. Healy, A. Heidmann, M. C. Heintze, J. Heinze, H. Heitmann, F. Hellman, P. Hello, G. Hemming, M. Hendry, I. S. Heng, E. Hennes, J. Hennig, M. Heurs, S. Hild, T. Hinderer, S. Y. Hoback, S. Hochheim, E. Hofgard, D. Hofman, A. M. Holgado, N. A. Holland, K. Holt, D. E. Holz, P. Hopkins, C. Horst, J. Hough, E. J. Howell, C. G. Hoy, Y. Huang, M. T. Hübner, E. A. Huerta, D. Huet, B. Hughey, V. Hui, S. Husa, S. H. Huttner, R. Huxford, T. Huynh-Dinh, B. Idzkowski, A. Iess, H. Inchauspe, C. Ingram, G. Intini, J.-M. Isac, M. Isi, B. R. Iyer, T. Jacqmin, S. J. Jadhav, S. P. Jadhav, A. L. James, K. Jani, N. N. Janthalur, P. Jaranowski, D. Jariwala, R. Jaume, A. C. Jenkins, J. Jiang, G. R. Johns, N. K. Johnson-McDaniel, A. W. Jones, D. I. Jones, J. D. Jones, P. Jones, R. Jones, R. J. G. Jonker, L. Ju, J. Junker, C. V. Kalaghatgi, V. Kalogera, B. Kamai, S. Kandhasamy, G. Kang, J. B. Kanner, S. J. Kapadia, S. Karki, R. Kashyap, M. Kasprzack, W. Kastaun, S. Katsanevas, E. Katsavounidis, W. Katzman, S. Kaufer, K. Kawabe, F. Kéfélian, D. Keitel, A. Keivani, R. Kennedy, J. S. Key, S. Khadka, F. Y. Khalili, I. Khan, S. Khan, Z. A. Khan, E. A. Khazanov, N. Khetan, M. Khursheed, N. Kijbunchoo, Chunglee Kim, G. J. Kim, J. C. Kim, K. Kim, W. Kim, W. S. Kim, Y.-M. Kim, C. Kimball, P. J. King, M. Kinley-Hanlon, R. Kirchhoff, J. S. Kissel, L. Kleybolte, S. Klimenko, T. D. Knowles, E. Knyazev, P. Koch, S. M. Koehlenbeck, G. Koekoek, S. Koley, V. Kondrashov, A. Kontos, N. Koper, M. Korobko, W. Z. Korth, M. Kovalam, D. B. Kozak, V. Kringel, N. V. Krishnendu, A. Królak, N. Krupinski, G. Kuehn, A. Kumar, P. Kumar, Rahul Kumar, Rakesh Kumar, S. Kumar, L. Kuo, A. Kutynia, B. D. Lackey, D. Laghi, E. Lalande, T. L. Lam, A. Lamberts, M. Landry, P. Landry, B. B. Lane, R. N. Lang, J. Lange, B. Lantz, R. K. Lanza, I. La Rosa, A. Lartaux-Vollard, P. D. Lasky, M. Laxen, A. Lazzarini, C. Lazzaro, P. Leaci, S. Leavey, Y. K. Lecoeuche, C. H. Lee, H. M. Lee, H. W. Lee, J. Lee, K. Lee, J. Lehmann, N. Leroy, N. Letendre, Y. Levin, A. K. Y. Li, J. Li, K. li, T. G. F. Li, X. Li, F. Linde, S. D. Linker, J. N. Linley, T. B. Littenberg, J. Liu, X. Liu, M. Llorens-Monteagudo, R. K. L. Lo, A. Lockwood, L. T. London, A. Longo, M. Lorenzini, V. Loriette, M. Lormand, G. Losurdo, J. D. Lough, C. O. Lousto, G. Lovelace, H. Lück, D. Lumaca, A. P. Lundgren, Y. Ma, R. Macas, S. Macfoy, M. MacInnis, D. M. Macleod, I. A. O. MacMillan, A. Macquet, I. Magaña Hernandez, F. Magaña-Sandoval, R. M. Magee, E. Majorana, I. Maksimovic, A. Malik, N. Man, V. Mandic, V. Mangano, G. L. Mansell, M. Manske, M. Mantovani, M. Mapelli, F. Marchesoni, F. Marion, S. Márka, Z. Márka, C. Markakis, A. S. Markosyan, A. Markowitz, E. Maros, A. Marquina, S. Marsat, F. Martelli, I. W. Martin, R. M. Martin, V. Martinez, D. V. Martynov, H. Masalehdan, K. Mason, E. Massera, A. Masserot, T. J. Massinger, M. Masso-Reid, S. Mastrogiovanni, A. Matas, F. Matichard, N. Mavalvala, E. Maynard, J. J. McCann, R. McCarthy, D. E. McClelland, S. McCormick, L. McCuller, S. C. McGuire, C. McIsaac, J. McIver, D. J. McManus, T. McRae, S. T. McWilliams, D. Meacher, G. D. Meadors, M. Mehmet, A. K. Mehta, E. Mejuto Villa, A. Melatos, G. Mendell, R. A. Mercer, L. Mereni, K. Merfeld, E. L. Merilh, J. D. Merritt, M. Merzougui, S. Meshkov, C. Messenger, C. Messick, R. Metzdorff, P. M. Meyers, F. Meylahn, A. Mhaske, A. Miani, H. Miao, I. Michaloliakos, C. Michel, H. Middleton, L. Milano, A. L. Miller, M. Millhouse, J. C. Mills, E. Milotti, M. C. Milovich-Goff, O. Minazzoli, Y. Minenkov, A. Mishkin, C. Mishra, T. Mistry, S. Mitra, V. P. Mitrofanov, G. Mitselmakher, R. Mittleman, G. Mo, K. Mogushi, S. R. P. Mohapatra, S. R. Mohite, M. Molina-Ruiz, M. Mondin, M. Montani, C. J. Moore, D. Moraru, F. Morawski, G. Moreno, S. Morisaki, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Arunava Mukherjee, D. Mukherjee, S. Mukherjee, Subroto Mukherjee, N. Mukund, A. Mullavey, J. Munch, E. A. Muñiz, P. G. Murray, A. Nagar, I. Nardecchia, L. Naticchioni, R. K. Nayak, B. F. Neil, J. Neilson, G. Nelemans, T. J. N. Nelson, M. Nery, A. Neunzert, K. Y. Ng, S. Ng, C. Nguyen, P. Nguyen, D. Nichols, S. A. Nichols, S. Nissanke, F. Nocera, M. Noh, C. North, D. Nothard, L. K. Nuttall, J. Oberling, B. D. O’Brien, G. Oganesyan, G. H. Ogin, J. J. Oh, S. H. Oh, F. Ohme, H. Ohta, M. A. Okada, M. Oliver, C. Olivetto, P. Oppermann, Richard J. Oram, B. O’Reilly, R. G. Ormiston, L. F. Ortega, R. O’Shaughnessy, S. Ossokine, C. Osthelder, D. J. Ottaway, H. Overmier, B. J. Owen, A. E. Pace, G. Pagano, M. A. Page, G. Pagliaroli, A. Pai, S. A. Pai, J. R. Palamos, O. Palashov, C. Palomba, H. Pan, P. K. Panda, P. T. H. Pang, C. Pankow, F. Pannarale, B. C. Pant, F. Paoletti, A. Paoli, A. Parida, W. Parker, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, B. Patricelli, E. Payne, B. L. Pearlstone, T. C. Pechsiri, A. J. Pedersen, M. Pedraza, A. Pele, S. Penn, A. Perego, C. J. Perez, C. Périgois, A. Perreca, S. Perriès, J. Petermann, H. P. Pfeiffer, M. Phelps, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, V. Pierro, G. Pillant, L. Pinard, I. M. Pinto, K. Piotrzkowski, M. Pirello, M. Pitkin, W. Plastino, R. Poggiani, D. Y. T. Pong, S. Ponrathnam, P. Popolizio, E. K. Porter, J. Powell, A. K. Prajapati, K. Prasai, R. Prasanna, G. Pratten, T. Prestegard, M. Principe, G. A. Prodi, L. Prokhorov, M. Punturo, P. Puppo, M. Pürrer, H. Qi, V. Quetschke, P. J. Quinonez, F. J. Raab, G. Raaijmakers, H. Radkins, N. Radulesco, P. Raffai, H. Rafferty, S. Raja, C. Rajan, B. Rajbhandari, M. Rakhmanov, K. E. Ramirez, A. Ramos-Buades, Javed Rana, K. Rao, P. Rapagnani, V. Raymond, M. Razzano, J. Read, T. Regimbau, L. Rei, S. Reid, D. H. Reitze, P. Rettegno, F. Ricci, C. J. Richardson, J. W. Richardson, P. M. Ricker, G. Riemenschneider, K. Riles, M. Rizzo, N. A. Robertson, F. Robinet, A. Rocchi, R. D. Rodriguez-Soto, L. Rolland, J. G. Rollins, V. J. Roma, M. Romanelli, R. Romano, C. L. Romel, I. M. Romero-Shaw, J. H. Romie, C. A. Rose, D. Rose, K. Rose, D. Rosińska, S. G. Rosofsky, M. P. Ross, S. Rowan, S. J. Rowlinson, P. K. Roy, Santosh Roy, Soumen Roy, P. Ruggi, G. Rutins, K. Ryan, S. Sachdev, T. Sadecki, M. Sakellariadou, O. S. Salafia, L. Salconi, M. Saleem, F. Salemi, A. Samajdar, E. J. Sanchez, L. E. Sanchez, N. Sanchis-Gual, J. R. Sanders, K. A. Santiago, E. Santos, N. Sarin, B. Sassolas, B. S. Sathyaprakash, O. Sauter, R. L. Savage, V. Savant, D. Sawant, S. Sayah, D. Schaetzl, P. Schale, M. Scheel, J. Scheuer, P. Schmidt, R. Schnabel, R. M. S. Schofield, A. Schönbeck, E. Schreiber, B. W. Schulte, B. F. Schutz, O. Schwarm, E. Schwartz, J. Scott, S. M. Scott, E. Seidel, D. Sellers, A. S. Sengupta, N. Sennett, D. Sentenac, V. Sequino, A. Sergeev, Y. Setyawati, D. A. Shaddock, T. Shaffer, M. S. Shahriar, A. Sharma, P. Sharma, P. Shawhan, H. Shen, M. Shikauchi, R. Shink, D. H. Shoemaker, D. M. Shoemaker, K. Shukla, S. ShyamSundar, K. Siellez, M. Sieniawska, D. Sigg, L. P. Singer, D. Singh, N. Singh, A. Singha, A. Singhal, A. M. Sintes, V. Sipala, V. Skliris, B. J. J. Slagmolen, T. J. Slaven-Blair, J. Smetana, J. R. Smith, R. J. E. Smith, S. Somala, E. J. Son, S. Soni, B. Sorazu, V. Sordini, F. Sorrentino, T. Souradeep, E. Sowell, A. P. Spencer, M. Spera, A. K. Srivastava, V. Srivastava, K. Staats, C. Stachie, M. Standke, D. A. Steer, J. Steinhoff, M. Steinke, J. Steinlechner, S. Steinlechner, D. Steinmeyer, S. Stevenson, D. Stocks, D. J. Stops, M. Stover, K. A. Strain, G. Stratta, A. Strunk, R. Sturani, A. L. Stuver, S. Sudhagar, V. Sudhir, T. Z. Summerscales, L. Sun, S. Sunil, A. Sur, J. Suresh, P. J. Sutton, B. L. Swinkels, M. J. Szczepańczyk, M. Tacca, S. C. Tait, C. Talbot, A. J. Tanasijczuk, D. B. Tanner, D. Tao, M. Tápai, A. Tapia, E. N. Tapia San Martin, J. D. Tasson, R. Taylor, R. Tenorio, L. Terkowski, M. P. Thirugnanasambandam, M. Thomas, P. Thomas, J. E. Thompson, S. R. Thondapu, K. A. Thorne, E. Thrane, C. L. Tinsman, T. R. Saravanan, Shubhanshu Tiwari, S. Tiwari, V. Tiwari, K. Toland, M. Tonelli, Z. Tornasi, A. Torres-Forné, C. I. Torrie, I. Tosta e Melo, D. Töyrä, E. A. Trail, F. Travasso, G. Traylor, M. C. Tringali, A. Tripathee, A. Trovato, R. J. Trudeau, K. W. Tsang, M. Tse, R. Tso, L. Tsukada, D. Tsuna, T. Tsutsui, M. Turconi, A. S. Ubhi, K. Ueno, D. Ugolini, C. S. Unnikrishnan, A. L. Urban, S. A. Usman, A. C. Utina, H. Vahlbruch, G. Vajente, G. Valdes, M. Valentini, N. van Bakel, M. van Beuzekom, J. F. J. van den Brand, C. Van Den Broeck, D. C. Vander-Hyde, L. van der Schaaf, J. V. Van Heijningen, A. A. van Veggel, M. Vardaro, V. Varma, S. Vass, M. Vasúth, A. Vecchio, G. Vedovato, J. Veitch, P. J. Veitch, K. Venkateswara, G. Venugopalan, D. Verkindt, D. Veske, F. Vetrano, A. Viceré, A. D. Viets, S. Vinciguerra, D. J. Vine, J.-Y. Vinet, S. Vitale, Francisco Hernandez Vivanco, T. Vo, H. Vocca, C. Vorvick, S. P. Vyatchanin, A. R. Wade, L. E. Wade, M. Wade, R. Walet, M. Walker, G. S. Wallace, L. Wallace, S. Walsh, J. Z. Wang, S. Wang, W. H. Wang, R. L. Ward, Z. A. Warden, J. Warner, M. Was, J. Watchi, B. Weaver, L.-W. Wei, M. Weinert, A. J. Weinstein, R. Weiss, F. Wellmann, L. Wen, P. Weßels, J. W. Westhouse, K. Wette, J. T. Whelan, B. F. Whiting, C. Whittle, D. M. Wilken, D. Williams, J. L. Willis, B. Willke, W. Winkler, C. C. Wipf, H. Wittel, G. Woan, J. Woehler, J. K. Wofford, C. Wong, J. L. Wright, D. S. Wu, D. M. Wysocki, L. Xiao, H. Yamamoto, L. Yang, Y. Yang, Z. Yang, M. J. Yap, M. Yazback, D. W. Yeeles, Hang Yu, Haocun Yu, S. H. R. Yuen, A. K. Zadrożny, A. Zadrożny, M. Zanolin, T. Zelenova, J.-P. Zendri, M. Zevin, J. Zhang, L. Zhang, T. Zhang, C. Zhao, G. Zhao, M. Zhou, Z. Zhou, X. J. Zhu, A. B. Zimmerman, M. E. Zucker, J. Zweizig, and LIGO Scientific Collaboration and Virgo Collaboration
Subjects: Gravitational wave astronomy, Gravitational wave sources, Astrophysical black holes, Compact binary stars, Gravitational waves, Gravitational wave detectors, Astrophysics, QB460-466
Abstract: We report the observation of a compact binary coalescence involving a 22.2–24.3 M _⊙ black hole and a compact object with a mass of 2.50–2.67 M _⊙ (all measurements quoted at the 90% credible level). The gravitational-wave signal, GW190814, was observed during LIGO’s and Virgo’s third observing run on 2019 August 14 at 21:10:39 UTC and has a signal-to-noise ratio of 25 in the three-detector network. The source was localized to 18.5 deg ^2 at a distance of ${241}_{-45}^{+41}$ Mpc; no electromagnetic counterpart has been confirmed to date. The source has the most unequal mass ratio yet measured with gravitational waves, ${0.112}_{-0.009}^{+0.008}$ , and its secondary component is either the lightest black hole or the heaviest neutron star ever discovered in a double compact-object system. The dimensionless spin of the primary black hole is tightly constrained to ≤0.07. Tests of general relativity reveal no measurable deviations from the theory, and its prediction of higher-multipole emission is confirmed at high confidence. We estimate a merger rate density of 1–23 Gpc ^−3 yr ^−1 for the new class of binary coalescence sources that GW190814 represents. Astrophysical models predict that binaries with mass ratios similar to this event can form through several channels, but are unlikely to have formed in globular clusters. However, the combination of mass ratio, component masses, and the inferred merger rate for this event challenges all current models of the formation and mass distribution of compact-object binaries.
Published: 2020
Full Text: View/download PDF

30. The Use of the Antigenically Variable Major Surface Protein 2 in the Establishment of Superinfection during Natural Tick Transmission of Anaplasma marginale in Southern Ghana

Author: Roberta Koku, James E. Futse, Jillian Morrison, Kelly A. Brayton, Guy H. Palmer, and Susan M. Noh
Subjects: Infectious Diseases, Immunology, Parasitology, Microbiology
Abstract: Many vector-borne pathogens, including Anaplasma spp., Borrelia spp., Trypanosoma spp., and Plasmodium spp., establish persistent infection in the mammalian host by using antigenic variation. These pathogens are also able to establish strain superinfection, defined as infection of an infected host with additional strains of the same pathogen despite an adaptive immune response. The ability to establish superinfection results in a population of susceptible hosts even with high pathogen prevalence.
Published: 2023
Full Text: View/download PDF

31. Sequence and immunologic conservation of Anaplasma marginale OmpA within strains from Ghana as compared to the predominant OmpA variant.

Author: James E Futse, Grace Buami, Boniface B Kayang, Roberta Koku, Guy H Palmer, Telmo Graça, and Susan M Noh
Subjects: Medicine, Science
Abstract: A primary challenge in developing effective vaccines against obligate, intracellular, bacterial tick-borne pathogens that establish persistent infection is the identification of antigens that cross protect against multiple strains. In the case of Anaplasma marginale, the most prevalent tick-borne pathogen of cattle found worldwide, OmpA is an adhesin and thus a promising vaccine candidate. We sequenced ompA from cattle throughout Ghana naturally infected with A. marginale in order to determine the degree of variation in this gene in an area of suspected high genetic diversity. We compared the Ghanaian sequences with those available from N. America, Mexico, Australia and Puerto Rico. When considering only amino acid changes, three unique Ghanaian OmpA variants were identified. In comparison, strains from all other geographic regions, except one, shared a single OmpA variant, Variant 1, which differed from the Ghanaian variants. Next, using recombinant OmpA based on Variant 1, we determined that amino acid differences in OmpA in Ghanaian cattle as compared to OmpA Variant 1 did not alter the binding capacity of antibody directed against OmpA Variant 1, supporting the value of OmpA as a highly conserved vaccine candidate.
Published: 2019
Full Text: View/download PDF

32. Site-Suitability Analysis on Seismic Stations using Geographic Information Systems

Author: Ida Sharmiza A. Halim, Shuib Rambat, and Ramzanee M. Noh Muhammad
Subjects: Geography, Planning and Development, Earth and Planetary Sciences (miscellaneous), Environmental Science (miscellaneous), Safety, Risk, Reliability and Quality
Abstract: The Ranau Earthquake which took place on 5 June 2015 was captured as among the worst ever disasters in Malaysia, par with the tsunami tragedy in 2004. Apart from 18 casualties and physical damage to infrastructure, the earthquake also caused landslides, rockfalls and debris flow around Mount Kinabalu. It also caused liquefaction in the Poring Hot Spring area. Although Malaysia has seismic stations to assess local and international earthquakes, academic researchers still find the distribution of seismic stations as insufficiently dense to provide accurate information where blind spots still exist in many places, particularly in earthquake prone areas. A strategic suggestion to address these existing gaps is by installing more sensitive seismic stations in strategic areas to enhance the precision, timeliness and content of earthquake information. Therefore, this study is primarily aimed to identify the criteria used in a site-suitability analysis on seismic stations as well as to suggest strategic locations for subsequent seismic stations to be included in the local seismic monitoring network. This study employed a GIS-based MCDA tool to create a suitability map for the placement of seismic stations in one of Malaysia's earthquake-prone locations, specifically the district of Niah Suai in Sarawak. The study's findings demonstrate GIS' capacity to combine multiple data layers with varied criteria to generate an acceptable suitability map. The acquired results were thoroughly discussed using descriptive analysis in order to meet the study objectives. The findings of this study may be used to enhance the existing technique employed by MET Malaysia in identifying suitable sites for seismic station placement. An improved seismic station network would aid MET Malaysia in delivering effective and reliable information to the National Disaster Agency for mitigation and preparation against disasters.
Published: 2022
Full Text: View/download PDF

33. Vertical variation of optical properties of mixed Asian dust/pollution plumes according to pathway of air mass transport over East Asia

Author: S.-K. Shin, D. Müller, C. Lee, K. H. Lee, D. Shin, Y. J. Kim, and Y. M. Noh
Subjects: Physics, QC1-999, Chemistry, QD1-999
Abstract: We use five years (2009–2013) of multiwavelength Raman lidar measurements at Gwangju, South Korea (35.10° N, 126.53° E) for the identification of changes of optical properties of East Asian dust depending on its transport path over China. Profiles of backscatter and extinction coefficients, lidar ratios, and backscatter-related Ångström exponents (wavelength pair 355/532 nm) were measured at Gwangju. Linear particle depolarization ratios were used to identify East Asian dust layers. We used backward trajectory modeling to identify the pathway and the vertical position of dust-laden air masses over China during long-range transport. Most cases of Asian dust events can be described by the emission of dust in desert areas and subsequent transport over highly polluted regions of China. The Asian dust plumes could be categorized into two classes according to the height above ground at which these plumes were transported: (case I) the dust layers passed over China at high altitude levels (> 3 km) until arrival over Gwangju, and (case II) the Asian dust layers were transported near the surface and within the lower troposphere (< 3 km) over industrialized areas before they arrived over Gwangju. We find that the optical characteristics of these mixed Asian dust layers over Gwangju differ depending on their vertical position above ground over China and the change of height above ground during transport. The mean linear particle depolarization ratio was 0.21 ± 0.06 (at 532 nm), the mean lidar ratios were 52 ± 7 sr at 355 nm and 53 ± 8 sr at 532 nm, and the mean Ångström exponent was 0.74 ± 0.31 for case I. In contrast, plumes transported at lower altitudes (case II) showed low depolarization ratios (0.13 ± 0.04 at 532 nm), and higher lidar ratio (63 ± 9 sr at 355 nm and 62 ± 8 sr at 532 nm) and Ångström exponents (0.98 ± 0.51). These numbers show that the optical characteristics of mixed Asian plumes are more similar to optical characteristics of urban pollution. We find a decrease of the linear depolarization ratio of the mixed dust/pollution plume depending on transport time if the pollution layer traveled over China at low heights, i.e., below approximately 3 km above ground. In contrast, we do not find such a trend if the dust plumes traveled at heights above 3 km over China. We need a longer time series of lidar measurements in order to determine in a quantitative way the change of optical properties of dust with transport time.
Published: 2015
Full Text: View/download PDF

34. Design and analysis of the Current Reuse Technique and Folded Cascode Power Constrained Simultaneous Noise and Input Matching LNAs with distributed and lumped parasitic.

Author: Norlaili M. Noh, Awatif Hashim, Kean Yeong Tan, and Yong Yeap Tan
Published: 2010
Full Text: View/download PDF

35. Area and pulsewidth dependence of bipolar TDDB in MgO magnetic tunnel junction.

Author: Jia Hao Lim, Nagarajan Raghavan, Sen Mei, Vinayak Bharat Naik, Jae Hyun Kwon, S. M. Noh, B. Liu, E. H. Toh, Nyuk Leong Chung, Robin Chao, K. H. Lee, and Kin Leong Pey
Published: 2018
Full Text: View/download PDF

36. Relationship between Multicultural Counseling Competency Level with Length of Service and Gender

Author: M. M. Noh, A. Y. A. Bakar, and M. K. M. Nasir
Subjects: General Medicine
Published: 2022
Full Text: View/download PDF

37. Investigation of the diurnal pattern of the vertical distribution of pollen in the lower troposphere using LIDAR

Author: Y. M. Noh, H. Lee, D. Mueller, K. Lee, D. Shin, S. Shin, T. J. Choi, Y. J. Choi, and K. R. Kim
Subjects: Physics, QC1-999, Chemistry, QD1-999
Abstract: The diurnal pattern of the vertical distribution of biogenic pollen in the lower troposphere was investigated by LIDAR. Meteorological data were taken at the ground. Pollen concentrations were measured at the surface using a Burkard 7-day-recording volumetric spore sampler. Aerosol extinction coefficients and depolarization ratios at 532 nm were obtained from LIDAR measurements in spring (4 May–2 June) 2009 in Gwangju, South Korea. Linear volume depolarization ratios varied between 0.08 and 0.14 and were observed only during daytime (09:00–17:00 local time (LT)) during days of high pollen concentration (4 to 9 May). Daily average pollen concentrations ranged 1000–2500 cm−3 in the same period. The temporal evolution of the vertical distribution of the linear volume depolarization ratio showed a specific diurnal pattern. Linear volume depolarization ratios of more than 0.06, were measured near the surface in the morning. High depolarization ratios were detected up to 2 km aboveground between 12:00 and 14:00 LT, whereas high depolarization ratios were observed only close to the surface after 17:00 LT. Low values of depolarization ratios (≤0.05) were detected after 18:00 LT until the next morning. During the measurement period, the daily variations of the high depolarization ratios close to the surface showed correlation to number concentration measurements of pollen. This finding suggests that high depolarization ratios could be attributed to enhanced pollen concentrations. The diurnal characteristics of the high values of depolarization ratios are thought to be closely associated with turbulent transport. Diurnal and vertical characteristics of pollen, if measured continuously, could be used to improve the accuracy of pollen-forecasting models via data assimilation studies.
Published: 2013
Full Text: View/download PDF

38. Iron Reduction in Dermacentor andersoni Tick Cells Inhibits Anaplasma marginale Replication

Author: Muna Salem M. Solyman, Jessica Ujczo, Kelly A. Brayton, Dana K. Shaw, David A. Schneider, and Susan M. Noh
Subjects: Inorganic Chemistry, Organic Chemistry, General Medicine, Physical and Theoretical Chemistry, Molecular Biology, Spectroscopy, Catalysis, Anaplasma marginale, iron transport, Dermacentor andersoni, tick-borne disease, siderophore-independent iron transport, anaplasmosis, obligate intracellular bacteria, Computer Science Applications
Abstract: Anaplasma spp. are obligate intracellular, tick-borne, bacterial pathogens that cause bovine and human anaplasmosis. We lack tools to prevent these diseases in part due to major knowledge gaps in our fundamental understanding of the tick–pathogen interface, including the requirement for and molecules involved in iron transport during tick colonization. We determine that iron is required for the pathogen Anaplasma marginale, which causes bovine anaplasmosis, to replicate in Dermacentor andersoni tick cells. Using bioinformatics and protein modeling, we identified three orthologs of the Gram-negative siderophore-independent iron uptake system, FbpABC. Am069, the A. marginale ortholog of FbpA, lacks predicted iron-binding residues according to the NCBI conserved domain database. However, according to protein modeling, the best structural orthologs of Am069 are iron transport proteins from Cyanobacteria and Campylobacterjejuni. We then determined that all three A. marginale genes are modestly differentially expressed in response to altered host cell iron levels, despite the lack of a Ferric uptake regulator or operon structure. This work is foundational for building a mechanistic understanding of iron uptake, which could lead to interventions to prevent bovine and human anaplasmosis.
Published: 2022
Full Text: View/download PDF

39. Iron Reduction in

Author: Muna Salem M, Solyman, Jessica, Ujczo, Kelly A, Brayton, Dana K, Shaw, David A, Schneider, and Susan M, Noh
Subjects: Anaplasma marginale, Anaplasmosis, Anaplasma, Iron, Animals, Humans, Cattle, Dermacentor
Published: 2022

40. Investigation the contribution of process areas to lower back pain among manual assembly workers in medical device industry

Author: M. S. M. Noh, S. A. C. Ghani, and W. N. W. Harun
Published: 2022
Full Text: View/download PDF

41. Disaggregating Tropical Disease Prevalence by Climatic and Vegetative Zones within Tropical West Africa.

Author: Carl S Beckley, Salisu Shaban, Guy H Palmer, Andrew T Hudak, Susan M Noh, and James E Futse
Subjects: Medicine, Science
Abstract: Tropical infectious disease prevalence is dependent on many socio-cultural determinants. However, rainfall and temperature frequently underlie overall prevalence, particularly for vector-borne diseases. As a result these diseases have increased prevalence in tropical as compared to temperate regions. Specific to tropical Africa, the tendency to incorrectly infer that tropical diseases are uniformly prevalent has been partially overcome with solid epidemiologic data. This finer resolution data is important in multiple contexts, including understanding risk, predictive value in disease diagnosis, and population immunity. We hypothesized that within the context of a tropical climate, vector-borne pathogen prevalence would significantly differ according to zonal differences in rainfall, temperature, relative humidity and vegetation condition. We then determined if these environmental data were predictive of pathogen prevalence. First we determined the prevalence of three major pathogens of cattle, Anaplasma marginale, Babesia bigemina and Theileria spp, in the three vegetation zones where cattle are predominantly raised in Ghana: Guinea savannah, semi-deciduous forest, and coastal savannah. The prevalence of A. marginale was 63%, 26% for Theileria spp and 2% for B. bigemina. A. marginale and Theileria spp. were significantly more prevalent in the coastal savannah as compared to either the Guinea savanna or the semi-deciduous forest, supporting acceptance of the first hypothesis. To test the predictive power of environmental variables, the data over a three year period were considered in best subsets multiple linear regression models predicting prevalence of each pathogen. Corrected Akaike Information Criteria (AICc) were assigned to the alternative models to compare their utility. Competitive models for each response were averaged using AICc weights. Rainfall was most predictive of pathogen prevalence, and EVI also contributed to A. marginale and B. bigemina prevalence. These findings support the utility of environmental data for understanding vector-borne disease epidemiology on a regional level within a tropical environment.
Published: 2016
Full Text: View/download PDF

42. Anti-diabetic effects of Protaetia brevitarsis in pancreatic islets and a murine diabetic model

Author: Y M, Park, E-M, Noh, H Y, Lee, D Y, Shin, Y H, Lee, Y G, Kang, E-J, Na, J-H, Kim, H J, Yang, M J, Kim, K S, Kim, J S, Bae, and Y-R, Lee
Subjects: Blood Glucose, Male, Biological Products, Glucose Tolerance Test, Nitric Oxide, Diabetes Mellitus, Experimental, Coleoptera, Mice, Inbred C57BL, Islets of Langerhans, Mice, Diabetes Mellitus, Type 2, Alloxan, Animals, Hypoglycemic Agents
Abstract: In this study, the antidiabetic efficacy of Protaetia brevitarsis in alloxan-treated pancreatic islets and db/db mice was investigated. P. brevitarsis was tested for alloxan-mediated cytotoxicity and nitric oxide production in mice pancreatic islets.The anti-diabetic effect of P. brevitarsis was also evaluated in db/db mice after 4 weeks of administration. Biochemical analysis, oral glucose tolerance test (OGTT), and pancreatic histological analysis were performed.P. brevitarsis displayed hypoglycemic activity in alloxan-treated mice pancreatic islets. Our results showed that P. brevitarsis protects pancreatic islets from cytotoxicity. Moreover, daily oral supplementation with P. brevitarsis for 4 weeks reduced plasma glucose levels without affecting body weight and food intake, elevated glucose tolerance in OGTT, improved blood lipid parameters, inhibited fat accumulation, and restored islet structure of db/db mice.The present study provided evidence for the anti‑diabetic effect of P. brevitarsis in alloxan-treated pancreatic islets and db/db mice. These results suggest that P. brevitarsis may be used as an adjunctive anti-diabetic agent or as a functional food.
Published: 2021

43. Use of agricultural wastes in rhamnolipid production by Pseudomonas aeruginosa USM-AR2

Author: G M Aggo, N A M Noh, and A R M Yahya
Subjects: General Medicine, General Chemistry
Abstract: This study investigates agricultural wastes as potential fermentation substrates to provide a cheaper solution in rhamnolipid production by P. aeruginosa USM-AR2 while simultaneously attempting to recycle waste. Rhamnolipid production was estimated by orcinol assay, oil spreading test (OST), and emulsification index (E24). The wastes used were waste cooking oil and glycerine pitch. Rhamnolipid fermentation was carried out in shake flask culture using minimal salt medium (MSM) supplemented with 3% (v/v) agricultural wastes as the sole carbon source and NaNO3 as the nitrogen source. MSM supplemented with waste cooking oil exhibited higher biomass, while glycerine pitch resulted in higher rhamnolipid production. Rhamnolipid from MSM supplemented with waste cooking oil demonstrated higher diameter of clearing zone in the OST than glycerine pitch. It exhibited high emulsification activity on waste cooking oil at 63.3 ± 0.03%, with glycerine pitch recording higher E24 at 71.5 ± 0.03%. In conclusion, P. aeruginosa USM-AR2 was able to utilize agricultural wastes to produce appreciable amounts of rhamnolipid.
Published: 2023
Full Text: View/download PDF

44. Water quality index analysis in Kim-Kim River: Effects of Covid-19 movement control order

Author: H A Mohiyaden, L M Sidek, S M Noh, M K Selamat, and M Marufuzzaman
Subjects: General Medicine, General Chemistry
Abstract: Movement Control Order (MCO) and Conditional Movement Control Order (CMCO) has been implemented throughout the country to reduce the effect of the COVID-19 outbreak. During MCO, several activities, including anthropogenic activities, are not allowed to be operated. Kim-Kim River, which receives most of the effluent from the industrial area, is chosen as a study area for investigating the impact of MCO toward its water quality trends. The results showed that the Water Quality Index (WQI) has improved from Class IV before MCO to Class III during MCO at the upstream of Kim Kim river. Overall, Kim-Kim river water quality has been developed by 19% during MCO. Although from the previous 10 years water quality trends confirm that Kim Kim River is categorised as a polluted river, with the continuation of MCO and the new norm of COVID19, the WQI are expected to be improved.
Published: 2023
Full Text: View/download PDF

45. Implementation of Nutrigenetics and Nutrigenomics Research and Training Activities for Developing Precision Nutrition Strategies in Malaysia

Author: Anto Cordelia T. A. Dhanapal, Ramatu Wuni, Eduard F. Ventura, Teh Kuan Chiet, Eddy S. G. Cheah, Annaletchumy Loganathan, Phoon Lee Quen, Mahenderan Appukutty, Mohd F. M. Noh, Ian Givens, and Karani Santhanakrishnan Vimaleswaran
Subjects: Nutrition and Dietetics, Food Science
Abstract: Nutritional epidemiological studies show a triple burden of malnutrition with disparate prevalence across the coexisting ethnicities in Malaysia. To tackle malnutrition and related conditions in Malaysia, research in the new and evolving field of nutrigenetics and nutrigenomics is essential. As part of the Gene-Nutrient Interactions (GeNuIne) Collaboration, the Nutrigenetics and Nutrigenomics Research and Training Unit (N2RTU) aims to solve the malnutrition paradox. This review discusses and presents a conceptual framework that shows the pathway to implementing and strengthening precision nutrition strategies in Malaysia. The framework is divided into: (1) Research and (2) Training and Resource Development. The first arm collects data from genetics, genomics, transcriptomics, metabolomics, gut microbiome, and phenotypic and lifestyle factors to conduct nutrigenetic, nutrigenomic, and nutri-epigenetic studies. The second arm is focused on training and resource development to improve the capacity of the stakeholders (academia, healthcare professionals, policymakers, and the food industry) to utilise the findings generated by research in their respective fields. Finally, the N2RTU framework foresees its applications in artificial intelligence and the implementation of precision nutrition through the action of stakeholders.
Published: 2022
Full Text: View/download PDF

46. Effect of Online Class Features on Students' Learning Satisfaction in UniMAP

Author: B. Y. Lim, S. Abd. Rashid, R. R. Othman, and N. I. M. Noh
Published: 2021
Full Text: View/download PDF

47. Water Quality Assessment for Batu Pahat River Basin, Malaysia

Author: H. A. Mohiyaden, Lariyah Mohd Sidek, A. Jajarmizadeh, A. M. D. Shahrir, A. H. M. Puad, and S. M. Noh
Subjects: Hydrology, Pollution, education.field_of_study, geography, geography.geographical_feature_category, media_common.quotation_subject, Population, Drainage basin, Sampling (statistics), STREAMS, Sharp rise, Urbanization, Environmental science, Water quality, education, media_common
Abstract: In Malaysia, the sharp rise in the population and the expansion of urban developments across the country caused considerable pollution to the water bodies, especially to the rivers. This study aims to assess the non-compliant water quality parameters regarding the Batu Pahat river basin streams in Malaysia. Two different approaches are used: water quality index (WQI) and the new water quality index (NWQI) to categorize the classes, and both results are compared. Moreover, the comparative analysis is done using past data for validation. A distinct difference between WQI and NWQI is recognized. The NWQI method is more likely to categorize a relatively higher class for the selected water quality parameters than the WQI method. The results have shown that out of 25 stations using the WQI method, the water quality parameters of AN, DO, and pH are considered non-compliant parameters. However, using the NWQI method, only DO remains a non-compliant parameter for more than half of the sampling stations. Thus, this research shows a reduction in non-compliant parameters when the WQI method is replaced with the NWQI.
Published: 2021
Full Text: View/download PDF

48. The unfolded protein response triggers the immune deficiency pathway in ticks

Author: Dana K. Shaw, Lindsay C. Sidak-Loftis, Natasha Pence, Elizabeth A. Fisk, Kristin L. Rosche, John W. Peters, Jessica K. Ujczo, Joanna Hurtado, and Susan M. Noh
Subjects: Cell signaling, TRAF2, XBP1, biology, Effector, Endoplasmic reticulum, Unfolded protein response, Ixodes, Borrelia burgdorferi, biology.organism_classification, Cell biology
Abstract: The insect immune deficiency (IMD) pathway is a defense mechanism that senses and responds to Gram negative bacteria. Ticks lack genes encoding upstream components that initiate the IMD pathway. Despite this deficiency, core signaling molecules are present and functionally restrict tick-borne pathogens. The molecular events preceding activation remain undefined. Here, we show that the Unfolded Protein Response (UPR) initiates the IMD network in Ixodes scapularis ticks. The endoplasmic reticulum (ER) stress receptor, IRE1α, is phosphorylated in response to tick-borne bacteria, but does not splice the mRNA encoding XBP1. Instead, through protein modeling and reciprocal pulldowns, we show that Ixodes IRE1α complexes with TRAF2. Disrupting IRE1α-TRAF2 signaling blocks IMD pathway activation and diminishes the production of reactive oxygen species. Through in vitro, in vivo, and ex vivo techniques we demonstrate that the UPR-IMD pathway circuitry limits the Lyme disease-causing spirochete Borrelia burgdorferi and the rickettsial agents Anaplasma phagocytophilum and A. marginale (anaplasmosis). Altogether, our study uncovers a novel linkage between the UPR and the IMD pathway in ticks.
Published: 2021
Full Text: View/download PDF

49. Device-Based Modulation of Neurocircuits as a Therapeutic for Psychiatric Disorders

Author: Sarah H. Lisanby, Shriya Awasthi, Nicholas L. Balderston, Bruce Luber, William C. Altekruse, Shannon L. Exley, Zhi-De Deng, Michelle M. Noh, Jeena Thomas, and Melbaliz Velez Afanador
Subjects: 0301 basic medicine, Pharmacology, medicine.medical_specialty, Convulsive Therapy, business.industry, Mental Disorders, Brain, Electric Stimulation Therapy, Equipment Design, Toxicology, Neurosurgical Procedures, Article, Neuromodulation (medicine), 03 medical and health sciences, 030104 developmental biology, 0302 clinical medicine, Animals, Humans, Medicine, business, Psychiatry, 030217 neurology & neurosurgery
Abstract: Device-based neuromodulation of brain circuits is emerging as a promising new approach in the study and treatment of psychiatric disorders. This work presents recent advances in the development of tools for identifying neurocircuits as therapeutic targets and in tools for modulating neurocircuits. We review clinical evidence for the therapeutic efficacy of circuit modulation with a range of brain stimulation approaches, including subthreshold, subconvulsive, convulsive, and neurosurgical techniques. We further discuss strategies for enhancing the precision and efficacy of neuromodulatory techniques. Finally, we survey cutting-edge research in therapeutic circuit modulation using novel paradigms and next-generation devices.
Published: 2020
Full Text: View/download PDF

50. Quantitative analysis of Anaplasma marginale acquisition and transmission by Dermacentor andersoni fed in vitro

Author: Glen A. Scoles, Rubikah Vimonish, Wendell C. Johnson, Massaro W. Ueti, Kelly A. Brayton, Michelle R. Mousel, and Susan M. Noh
Subjects: 0301 basic medicine, 030106 microbiology, Cattle Diseases, lcsh:Medicine, Tick, Salivary Glands, Article, Microbiology, 03 medical and health sciences, parasitic diseases, Animals, Dermacentor andersoni, lcsh:Science, Pathogen, Dermacentor, Multidisciplinary, Bacteria, biology, Transmission (medicine), Host (biology), lcsh:R, Midgut, Feeding Behavior, biology.organism_classification, bacterial infections and mycoses, In vitro, Tick Infestations, Anaplasma marginale, 030104 developmental biology, Anaplasmataceae Infections, Arachnid Vectors, Cattle, Parasitology, lcsh:Q, Digestive System
Abstract: In this study, we describe a new in vitro tick feeding system that facilitates the study of ticks and tick-borne pathogens. To optimize the system, we used Dermacentor andersoni and Anaplasma marginale as a tick-pathogen interaction model. Ticks were fed on bovine blood containing 10-fold dilutions of the pathogen to determine the effect of dose on tick infection rate. After feeding on infected blood, ticks were transferred to uninfected blood to stimulate bacterial replication within the tick vector. During stimulation feeding, blood samples were collected daily to determine if infected ticks secreted viable A. marginale. The results demonstrated similar attachment rates between the first and second tick feeding. Tick midgut and salivary glands were infected with A. marginale. However, salivary gland infection rates decreased as the percentage of parasitized erythrocytes decreased during tick acquisition feeding. Bacteria recovered from the in vitro system were able to infect a naïve bovine host. Using the highly transmissible A. marginale St. Maries strain, we demonstrated that the artificial tick feeding system is a suitable tool to study tick-pathogen interactions and that A. marginale tick salivary gland infection is dose dependent. This work demonstrates the utility of an artificial tick feeding system to directly study the association between the number of acquired pathogens and transmissibility by ticks.
Published: 2020
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Region

Database

Publisher

517 results on '"M Noh"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources