24,856 results on '"Puglisi, A."'
Search Results
202. Interplay between ESR1/PIK3CA codon variants, oncogenic pathway alterations and clinical phenotype in patients with metastatic breast cancer (MBC): comprehensive circulating tumor DNA (ctDNA) analysis
- Author
-
Gerratana, Lorenzo, Davis, Andrew A., Velimirovic, Marko, Clifton, Katherine, Hensing, Whitney L., Shah, Ami N., Dai, Charles S., Reduzzi, Carolina, D’Amico, Paolo, Wehbe, Firas, Medford, Arielle, Wander, Seth A., Gradishar, William J., Behdad, Amir, Puglisi, Fabio, Ma, Cynthia X., Bardia, Aditya, and Cristofanilli, Massimo
- Published
- 2023
- Full Text
- View/download PDF
203. Improvements in the biochemical responses and Pb and Ni phytoremediation of lavender (Lavandula angustifolia L.) plants through Funneliformis mosseae inoculation
- Author
-
Rasouli, Farzad, Hassanpouraghdam, Mohammad Bagher, Pirsarandib, Yaghoub, Aazami, Mohammad Ali, Asadi, Mohammad, Ercisli, Sezai, Mehrabani, Lamia Vojodi, Puglisi, Ivana, and Baglieri, Andrea
- Published
- 2023
- Full Text
- View/download PDF
204. Effect of municipal biowaste derived biostimulant on nitrogen fate in the plant-soil system during lettuce cultivation
- Author
-
Fragalà, Ferdinando, Puglisi, Ivana, Padoan, Elio, Montoneri, Enzo, Stevanato, Piergiorgio, Gomez, Josè Maria, Herrero, Natalia, La Bella, Emanuele, Salvagno, Erika, and Baglieri, Andrea
- Published
- 2023
- Full Text
- View/download PDF
205. Socio-economic, governance and health indicators shaping antimicrobial resistance: an ecological analysis of 30 european countries
- Author
-
Maugeri, Andrea, Barchitta, Martina, Puglisi, Federico, and Agodi, Antonella
- Published
- 2023
- Full Text
- View/download PDF
206. Acclimatization of a coral-dinoflagellate mutualism at a CO2 vent
- Author
-
Prada, Fiorella, Franzellitti, Silvia, Caroselli, Erik, Cohen, Itay, Marini, Mauro, Campanelli, Alessandra, Sana, Lorenzo, Mancuso, Arianna, Marchini, Chiara, Puglisi, Alessia, Candela, Marco, Mass, Tali, Tassi, Franco, LaJeunesse, Todd C., Dubinsky, Zvy, Falini, Giuseppe, and Goffredo, Stefano
- Published
- 2023
- Full Text
- View/download PDF
207. Colorectal cancer-derived small extracellular vesicles induce TGFβ1-mediated epithelial to mesenchymal transition of hepatocytes
- Author
-
Pucci, Marzia, Moschetti, Marta, Urzì, Ornella, Loria, Marco, Conigliaro, Alice, Di Bella, Maria Antonietta, Crescitelli, Rossella, Olofsson Bagge, Roger, Gallo, Alessia, Santos, Mark F., Puglisi, Caterina, Forte, Stefano, Lorico, Aurelio, Alessandro, Riccardo, and Fontana, Simona
- Published
- 2023
- Full Text
- View/download PDF
208. The politics of FinTech : a comparative approach
- Author
-
Puglisi, Alfio, Chalmers, Adam William, and James, Scott
- Abstract
FinTech represents a new combination of two industries: financial services and technology. The novel economic sector is constantly growing at the national and international levels. Governments and firms face a number of regulatory and supervisory challenges in the area of cross-border supervisory cooperation, digital identity, cyber security and privacy among others. To address these challenges, two policy tools have emerged and they are: innovation hubs and sandbox regimes. They represent two safe regulatory and innovative environments in which governments and firms can innovate. Governments are interested in these policy tools to re-invent their regulatory functions and meet the demands of a new population which has become more tech-savvy and expect firms to tailor products and services to their preferences. Regulatory regimes are adopting a model rooted in market competition and innovation. While technology allows experimentation and provides opportunities for governments to monitor areas of innovation in unexpected places, governments are reinventing themselves to establish a new digital order rooted in a flatter rule of law.
- Published
- 2022
209. An ancient massive quiescent galaxy found in a gas-rich z ~ 3 group
- Author
-
Kalita, Boris S., Daddi, Emanuele, D'Eugenio, Chiara, Valentino, Francesco, Rich, R. Michael, Gómez-Guijarro, Carlos, Coogan, Rosemary T., Delvecchio, Ivan, Elbaz, David, Neill, James D., Puglisi, Annagrazia, and Strazzullo, Veronica
- Subjects
Astrophysics - Astrophysics of Galaxies - Abstract
Deep ALMA and HST observations reveal the presence of a quenched massive galaxy within the $z=2.91$ galaxy group RO-1001. With a mass-weighted stellar age of $1.6 \pm 0.4 \,$Gyr this galaxy is one of the oldest known at $z\sim3$, implying that most of its $10^{11}\rm \, M_{\odot}$ of stars were rapidly formed at $z>6$--8. This is a unique example of the predominantly passive evolution of a galaxy over at least $3
- Published
- 2021
- Full Text
- View/download PDF
210. The Simons Observatory: HoloSim-ML: machine learning applied to the efficient analysis of radio holography measurements of complex optical systems
- Author
-
Chesmore, Grace E., Adler, Alexandre E., Cothard, Nicholas F., Dachlythra, Nadia, Gallardo, Patricio A., Gudmundsson, Jon, Johnson, Bradley R., Limon, Michele, McMahon, Jeff, Nati, Federico, Niemack, Michael D., Puglisi, Giuseppe, Simon, Sara M., Wollack, Edward J., Wolz, Kevin, Xu, Zhilei, and Zhu, Ningfeng
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics ,Electrical Engineering and Systems Science - Image and Video Processing ,Physics - Optics - Abstract
Near-field radio holography is a common method for measuring and aligning mirror surfaces for millimeter and sub-millimeter telescopes. In instruments with more than a single mirror, degeneracies arise in the holography measurement, requiring multiple measurements and new fitting methods. We present HoloSim-ML, a Python code for beam simulation and analysis of radio holography data from complex optical systems. This code uses machine learning to efficiently determine the position of hundreds of mirror adjusters on multiple mirrors with few micron accuracy. We apply this approach to the example of the Simons Observatory 6m telescope., Comment: Software is publicly available at: https://github.com/McMahonCosmologyGroup/holosim-ml
- Published
- 2021
- Full Text
- View/download PDF
211. Simulations of systematic effects arising from cosmic rays in the LiteBIRD space telescope, and effects on the measurements of CMB $B$-modes
- Author
-
Stever, Samantha Lynn, Ghigna, Tommaso, Tominaga, Mayu, Puglisi, Giuseppe, Tsujimoto, Masahiro, Marazzini, Matteo Zeccoli, Baratto, Matteo, Tomasi, Maurizio, Minami, Yuto, Sugiyama, Shinya, Kato, Akihiro, Matsumura, Tomotake, Ishino, Hirokazu, Patanchon, Guillaume, and Hazumi, Masashi
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Cosmology and Nongalactic Astrophysics ,Physics - Instrumentation and Detectors - Abstract
Systematic effects arising from cosmic rays have been shown to be a significant threat to space telescopes using high-sensitivity bolometers. The LiteBIRD space mission aims to measure the polarised Cosmic Microwave Background with unprecedented sensitivity, but its positioning in space will also render it susceptible to cosmic ray effects. We present an end-to-end simulator for evaluating the expected scale of cosmic ray effect on the LiteBIRD space mission, which we demonstrate on a subset of detectors on the 166 GHz band of the Low Frequency Telescope. The simulator couples the expected proton flux at L2 with a model of the thermal response of the LFT focal plane and the electrothermal response of its superconducting detectors, producing time-ordered data which is projected into simulated sky maps and subsequent angular power spectra., Comment: To submit to the Journal of Cosmology and Astroparticle Physics (JCAP)
- Published
- 2021
- Full Text
- View/download PDF
212. Spatio-Temporal SAR-Optical Data Fusion for Cloud Removal via a Deep Hierarchical Model
- Author
-
Sebastianelli, Alessandro, Nowakowski, Artur, Puglisi, Erika, Del Rosso, Maria Pia, Mifdal, Jamila, Pirri, Fiora, Mathieu, Pierre Philippe, and Ullo, Silvia Liberata
- Subjects
Computer Science - Computer Vision and Pattern Recognition ,Computer Science - Artificial Intelligence ,Electrical Engineering and Systems Science - Image and Video Processing - Abstract
Cloud removal is a relevant topic in Remote Sensing as it fosters the usability of high-resolution optical images for Earth monitoring and study. Related techniques have been analyzed for years with a progressively clearer view of the appropriate methods to adopt, from multi-spectral to inpainting methods. Recent applications of deep generative models and sequence-to-sequence-based models have proved their capability to advance the field significantly. Nevertheless, there are still some gaps, mostly related to the amount of cloud coverage, the density and thickness of clouds, and the occurred temporal landscape changes. In this work, we fill some of these gaps by introducing a novel multi-modal method that uses different sources of information, both spatial and temporal, to restore the whole optical scene of interest. The proposed method introduces an innovative deep model, using the outcomes of both temporal-sequence blending and direct translation from Synthetic Aperture Radar (SAR) to optical images to obtain a pixel-wise restoration of the whole scene. The advantage of our approach is demonstrated across a variety of atmospheric conditions tested on a dataset we have generated and made available. Quantitative and qualitative results prove that the proposed method obtains cloud-free images, preserving scene details without resorting to a huge portion of a clean image and coping with landscape changes.
- Published
- 2021
213. Simulating Calibration and Beam Systematics for a Future CMB Space Mission with the TOAST Package
- Author
-
Puglisi, Giuseppe, Keskitalo, Reijo, Kisner, Ted, and Borrill, Julian D.
- Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics ,Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
We address in this work the instrumental systematic errors that can potentially affect the forthcoming and future Cosmic Microwave Background experiments aimed at observing its polarized emission. In particular, we focus on the systematics induced by the beam and calibration, which are considered the major sources of leakage from total intensity measurements to polarization. We simulated synthetic data sets with Time-Ordered Astrophysics Scalable Tools, a publicly available simulation and data analysis package. We also propose a mitigation technique aiming at reducing the leakage by means of a template fitting approach. This technique has shown promising results reducing the leakage by 2 orders of magnitude at the power spectrum level when applied to a realistic simulated data set of the LiteBIRD satellite mission.
- Published
- 2021
- Full Text
- View/download PDF
214. The KMOS Galaxy Evolution Survey (KGES): the angular momentum of star-forming galaxies over the last ~10 Gyr
- Author
-
Tiley, A. L., Gillman, S., Cortese, L., Swinbank, A. M., Dudzevičiūtė, U., Harrison, C. M., Smail, I., Obreschkow, D., Croom, S. M., Sharples, R. M., and Puglisi, A.
- Subjects
Astrophysics - Astrophysics of Galaxies - Abstract
We present the KMOS Galaxy Evolution Survey (KGES), a $K$-band Multi-Object Spectrograph (KMOS) study of the H$\alpha$ and [NII] emission from 288 $K$ band-selected galaxies at $1.2 \lesssim z \lesssim 1.8$, with stellar masses in the range $\log_{10}(M_{*}/\rm{M}_{\odot})\approx$9-11.5. In this paper, we describe the survey design, present the sample, and discuss the key properties of the KGES galaxies. We combine KGES with appropriately matched samples at lower redshifts from the KMOS Redshift One Spectroscopic Survey (KROSS) and the SAMI Galaxy Survey. Accounting for the effects of sample selection, data quality, and analysis techniques between surveys, we examine the kinematic characteristics and angular momentum content of star-forming galaxies at $z\approx1.5$, $\approx1$ and $\approx0$. We find that stellar mass, rather than redshift, most strongly correlates with the disc fraction amongst star-forming galaxies at $z \lesssim 1.5$, observing only a modest increase in the prevalence of discs between $z\approx1.5$ and $z\approx0.04$ at fixed stellar mass. Furthermore, typical star-forming galaxies follow the same median relation between specific angular momentum and stellar mass, regardless of their redshift, with the normalisation of the relation depending more strongly on how disc-like a galaxy's kinematics are. This suggests that massive star-forming discs form in a very similar manner across the $\approx$ 10 Gyr encompassed by our study and that the inferred link between the angular momentum of galaxies and their haloes does not change significantly across the stellar mass and redshift ranges probed in this work., Comment: 24 pages, 9 figures, 3 tables. MNRAS in press
- Published
- 2021
- Full Text
- View/download PDF
215. Spider silks mechanics: predicting humidity and temperature effects
- Author
-
Puglisi, Giuseppe, De Tommasi, Domenico, Fazio, Vincenzo, and Pugno, Nicola Maria
- Subjects
Condensed Matter - Soft Condensed Matter - Abstract
We deduce a microstructure inspired model for humidity and temperature effects on the mechanical response of spider silks, modelled as a composite material with a hard crystalline and a soft amorphous region. Water molecules decrease the percentage of crosslinks in the softer region inducing a variation of natural configuration of the macromolecules. The resulting kinematic incompatibility between the regions crucially influences the final mechanical response. We demonstrate the predictivity of the model by quantitatively reproducing the experimentally observed behavior
- Published
- 2021
216. A 4-Element 800MHz-BW 29mW True-Time-Delay Spatial Signal Processor Enabling Fast Beam-Training with Data Communications
- Author
-
Lin, Chung-Ching, Puglisi, Chase, Boljanovic, Veljko, Mohapatra, Soumen, Yan, Han, Ghaderi, Erfan, Heo, Deukhyoun, Cabric, Danijela, and Gupta, Subhanshu
- Subjects
Electrical Engineering and Systems Science - Signal Processing ,Electrical Engineering and Systems Science - Systems and Control - Abstract
Spatial signal processors (SSP) for emerging millimeter-wave wireless networks are critically dependent on link discovery. To avoid loss in communication, mobile devices need to locate narrow directional beams with millisecond latency. In this work, we demonstrate a true-time-delay (TTD) array with digitally reconfigurable delay elements enabling both fast beam-training at the receiver with wideband data communications. In beam-training mode, large delay-bandwidth products are implemented to accelerate beam training using frequency-dependent probing beams. In data communications mode, precise beam alignment is achieved to mitigate spatial effects during beam-forming for wideband signals. The 4-element switched-capacitor based time-interleaved array uses a compact closed-loop integrator for signal combining with the delay compensation implemented in the clock domain to achieve high precision and large delay range. Prototyped in TSMC 65nm CMOS, the TTD SSP successfully demonstrates unique frequency-to-angle mapping with 3.8ns maximum delay and 800MHz bandwidth in the beam-training mode. In the data communications mode, nearly 12dB uniform beamforming gain is achieved from 80MHz to 800MHz. The TTD SSP consumes 29mW at 1V supply achieving 122MB/s with 16-QAM at 9.8% EVM., Comment: to be presented at the IEEE European Solid-State Circuits Conference in September 2021
- Published
- 2021
217. Hydrodynamics of simple active liquids: the emergence of velocity correlations
- Author
-
Marconi, Umberto Marini Bettolo, Puglisi, Andrea, and Caprini, Lorenzo
- Subjects
Condensed Matter - Statistical Mechanics ,Condensed Matter - Soft Condensed Matter - Abstract
We derive the Hydrodynamics for a system of N active, spherical, underdamped particles, interacting through conservative forces. At the microscopic level, we represent the evolution of the particles in terms of the Kramers equation for the probability density distribution of their positions, velocities, and orientations, while at a mesoscopic level we switch to a coarse-grained description introducing an appropriate set of hydrodynamic fields given by the lower-order moments of the distribution. In addition to the usual density and polarization fields, the Hydrodynamics developed in this paper takes into account the velocity and kinetic temperature fields, which are crucial to understanding new aspects of the behavior of active liquids. By imposing a suitable closure of the hydrodynamic moment equations and truncation of the Born-Bogolubov-Green-Kirkwood-Yvon hierarchy, we obtain a closed set of mesoscopic balance equations. At this stage, we focus our interest on the small deviations of the hydrodynamic fields from their averages and apply the methods of the theory of linear hydrodynamic fluctuations. Our treatment sheds light on the peculiar properties of isotropic active liquids and their emergent dynamical collective phenomena, such as the spontaneous alignment of the particle velocities. We predict the existence within the liquid phase of spatial equal-time Ornstein-Zernike-like velocity correlations both for the longitudinal and the transverse modes. At variance with active solids, in active liquids, the correlation length of the transverse velocity fluctuations is sensibly shorter than the length of the longitudinal fluctuations. In particular, the latter depends on the sound speed and increases with the persistence time, while the former displays a weaker dependence on these parameters. Finally, within the same framework, we derive the dynamical structure factors ...
- Published
- 2021
- Full Text
- View/download PDF
218. The evolution of compact massive quiescent and starforming galaxies derived from the $R_e-R_h$ and $M_{\rm star}-M_h$ relations
- Author
-
Zanisi, L., Shankar, F., Fu, H., Rodriguez-Puebla, A., Avila-Reese, V., Faisst, A., Daddi, E., Boco, L., Lapi, A., Giavalisco, M., Saracco, P., Buitrago, F., Huertas-Company, M., Puglisi, A., and Dekel, A.
- Subjects
Astrophysics - Astrophysics of Galaxies - Abstract
The mean size ( effective radius $R_e$) of Massive Galaxies (MGs, $M_{\rm star}>10^{11.2}M_\odot$) is observed to increase steadily with cosmic time. It is still unclear whether this trend originates from the size growth of individual galaxies (via, e.g., mergers and/or AGN feedback) or from the inclusion of larger galaxies entering the selection at later epochs (progenitor bias). We here build a data-driven, flexible theoretical framework to probe the structural evolution of MGs. We assign galaxies to dark matter haloes via stellar mass-halo mass (SMHM) relations with varying high-mass slopes and scatters $\sigma_{\rm SMHM}$ in stellar mass at fixed halo mass, and assign sizes to galaxies using an empirically-motivated, constant and linear relationship between $R_e$ and the host dark matter halo radius $R_h$. We find that: 1) the fast mean size growth of MGs is well reproduced independently of the shape of the input SMHM relation; 2) the numbers of compact MGs grow steadily until $z\gtrsim2$ and fall off at lower redshifts, suggesting a lesser role of progenitor bias at later epochs; 3) a time-independent scatter $\sigma_{\rm SMHM}$ is consistent with a scenario in which compact starforming MGs transition into quiescent MGs in a few $10^8$yr with a negligible structural evolution during the compact phase, while a scatter increasing at high redshift implies significant size growth during the starforming phase. A robust measurement of the size function of MGs at high redshift can set strong constraints on the scatter of the SMHM relation and, by extension, on models of galaxy evolution., Comment: Accepted for publication in MNRAS. Comments still welcome
- Published
- 2021
- Full Text
- View/download PDF
219. The Use of Vacuum Devices as Adjuvant Therapy before and after Penile Curvature Surgery in Patients Affected by La Peyronie’s Disease: Results from a Comparative Study
- Author
-
Tommaso Cai, Marco Capece, Carlo Ceruti, Daniele Tiscione, Marco Puglisi, Paolo Verze, Paolo Gontero, and Alessandro Palmieri
- Subjects
Peyronie’s disease ,vacuum erection devices ,penile curvature ,surgery ,quality of life ,Medicine (General) ,R5-920 - Abstract
Background: Peyronie’s disease (PD) represents a challenging urological disease, due to not optimal post-operative surgical outcomes. We aim to retrospectively evaluate if vacuum erection device (VED) treatment before penile curvature surgery is able to improve post-operative surgical outcomes. Methods: All enrolled patients were assigned to the following groups: (a) the treatment group: VED treatment (three times per week) starting 3 months before surgery and (three times per week) one month after surgery; and (b) the control group: VED treatment (three times per week) one month after surgery. Follow-up urologic visits were scheduled for 3 and 6 months after surgery, and the two groups were compared. Results: A total of 38 patients were enrolled (median age 67 years, 57–74, IQR): 20 in the treatment group and 18 in the control group. At the follow-up visits, the two groups were different in terms of IIEF-5 (26 vs. 24; p = 0.02), “yes” to SEP2 and 3 (85% vs. 55%; p < 0.001, 85% vs. 50%; p < 0.001, respectively), and PDQ (−16 vs. −11; p = 0.03). Complete correction of penile curvature was achieved in 36 patients (94.7%). In the treatment group, no hourglass deformity was reported, whereas one patient reported a mild hourglass deformity in the control group. In the treatment group, we obtained a longer total penile length (median +1.5 cm). The overall satisfaction rate was 98% in the treatment group and 96% in the control group. Conclusions: The VED treatment before penile curvature surgery in patients affected by PD was able to improve surgical outcomes.
- Published
- 2023
- Full Text
- View/download PDF
220. Supramolecular Detection of a Sub-ppm Nerve Agent Simulant by a Smartphone Tool
- Author
-
Roberta Puglisi, Rossella Santonocito, Ester Butera, Giulia Lorenza Mendola, Andrea Pappalardo, and Giuseppe Trusso Sfrazzetto
- Subjects
Chemistry ,QD1-999 - Published
- 2023
- Full Text
- View/download PDF
221. Interplay between ESR1/PIK3CA codon variants, oncogenic pathway alterations and clinical phenotype in patients with metastatic breast cancer (MBC): comprehensive circulating tumor DNA (ctDNA) analysis
- Author
-
Lorenzo Gerratana, Andrew A. Davis, Marko Velimirovic, Katherine Clifton, Whitney L. Hensing, Ami N. Shah, Charles S. Dai, Carolina Reduzzi, Paolo D’Amico, Firas Wehbe, Arielle Medford, Seth A. Wander, William J. Gradishar, Amir Behdad, Fabio Puglisi, Cynthia X. Ma, Aditya Bardia, and Massimo Cristofanilli
- Subjects
Circulating biomarker ,Endocrine therapy ,Next generation sequencing ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background although being central for the biology and druggability of hormone-receptor positive, HER2 negative metastatic breast cancer (MBC), ESR1 and PIK3CA mutations are simplistically dichotomized as mutated or wild type in current clinical practice. Methods The study analyzed a multi-institutional cohort comprising 703 patients with luminal-like MBC characterized for circulating tumor DNA through next generation sequencing (NGS). Pathway classification was defined based on previous work (i.e., RTK, RAS, RAF, MEK, NRF2, ER, WNT, MYC, P53, cell cycle, notch, PI3K). Single nucleotide variations (SNVs) were annotated for their oncogenicity through OncoKB. Only pathogenic variants were included in the models. Associations among clinical characteristics, pathway classification, and ESR1/PIK3CA codon variants were explored. Results The results showed a differential pattern of associations for ESR1 and PIK3CA codon variants in terms of co-occurring pathway alterations patterns of metastatic dissemination, and prognosis. ESR1 537 was associated with SNVs in the ER and RAF pathways, CNVs in the MYC pathway and bone metastases, while ESR1 538 with SNVs in the cell cycle pathway and liver metastases. PIK3CA 1047 and 542 were associated with CNVs in the PI3K pathway and with bone metastases. Conclusions The study demonstrated how ESR1 and PIK3CA codon variants, together with alterations in specific oncogenic pathways, can differentially impact the biology and clinical phenotype of luminal-like MBC. As novel endocrine therapy agents such as selective estrogen receptor degraders (SERDS) and PI3K inhibitors are being developed, these results highlight the pivotal role of ctDNA NGS to describe tumor evolution and optimize clinical decision making.
- Published
- 2023
- Full Text
- View/download PDF
222. Environment‐dependent influence of fruit size upon the distribution of the Malesian archipelagic flora
- Author
-
Liam A. Trethowan, Laura Jennings, Gemma Bramley, Ruth Clark, Sally Dawson, Alison Moore, Laura Pearce, Carmen Puglisi, Michael Riwu‐Kaho, Rosaria, Anna Trias‐Blasi, Timothy M. A. Utteridge, and Himmah Rustiami
- Subjects
biogeography ,dispersal ,environmental variables ,generalised mixed effects model ,macroecology ,seed dispersal ,Environmental sciences ,GE1-350 ,Botany ,QK1-989 - Abstract
Societal Impact Statement We found evidence that larger fruited plant species are more likely to be found in aseasonal wet areas of Malesia. These areas are likely to be impacted by increasing human encroachment, which threatens both large‐fruited species and the large fauna that are most likely responsible for their dispersal. This synergistic threat could drive the loss of fruit‐crop relatives that potentially have key traits for resilient fruit crops of the future. Summary It is unclear how fruit size determines distributions of megadiverse tropical flora. Energetic constraints of ecosystems suggest plant species with larger fruit should be found in the higher productivity, aseasonal wet tropics. However, the probability of seed dispersal over large scales should be increased by fruits being smaller, due to being available to a greater number of dispersal agents. We use a Bayesian phylogenetic model of species occurrence for >3400 species in Malesia to test how fruit size and environment interact to determine species distributions across the archipelago. We show that larger fruited species are more likely to occur in aseasonal wet areas. We also found that smaller fruit size was associated with species occurrence in more mountainous areas. Fruit size interacts with environmental variables to shape plant distributions across the megadiverse Malesian islands. The evolutionary processes that influence the patterns we have observed require further examination.
- Published
- 2023
- Full Text
- View/download PDF
223. Debris and mud flows runout assessment: a comparison among empirical geometric equations in the Giampilieri and Briga basins (east Sicily, Italy) affected by the event of October 1, 2009
- Author
-
Falconi, Luca Maria, Moretti, Lorenzo, Puglisi, Claudio, and Righini, Gaia
- Published
- 2023
- Full Text
- View/download PDF
224. Linea guida per la gestione del nodulo benigno della tiroide causa di sintomi locali: Associazione medici endocrinologi (AME), Istituto superiore di Sanità 2022 e Associazione Italiana della Tiroide (AIT); Associazione Italiana di Medicina Nucleare (AIMN); Associazione Nazionale Infermieri in Endocrinologia e Diabetologia (ANIED); Comitato Associazioni Pazienti Endocrini (CAPE); Federazione delle Associazioni dei Dirigenti Medici Ospedalieri Internisti (FADOI); Società Italiana di Anatomia Patologica e Citologia Diagnostica - Divisione Italiana della International Academy of Pathology (SIAPEC-IAP); Società Italiana di Endocrinologia (SIE); Società Italiana di Radiologia Medica ed Interventistica (SIRM); Società Italiana Unitaria di Endocrino-Chirurgia (SIUEC), Società Italiana Ultrasonografia in Medicina e Biologia (SIUMB)
- Author
-
Papini, Enrico, Crescenzi, Anna, D’Amore, Annamaria, De Benedictis, Anna, Deandrea, Maurilio, Frasoldati, Andrea, Garberoglio, Roberto, Guglielmi, Rinaldo, Lombardi, Celestino Pio, Mauri, Giovanni, Miceli, Rosa Elisa, Polano, Paola, Puglisi, Soraya, Rago, Teresa, Triggiani, Vincenzo, Van Doorne, Dominique, and Salvatore, Domenico
- Published
- 2023
- Full Text
- View/download PDF
225. Intermediate clinical endpoints in early-stage breast cancer: an analysis of individual patient data from the Gruppo Italiano Mammella and Mammella Intergruppo trials
- Author
-
Blondeaux, Eva, Xie, Wanling, Carmisciano, Luca, Mura, Silvia, Sanna, Valeria, De Laurentiis, Michelino, Caputo, Roberta, Turletti, Anna, Durando, Antonio, De Placido, Sabino, De Angelis, Carmine, Bisagni, Giancarlo, Gasparini, Elisa, Rimanti, Anita, Puglisi, Fabio, Mansutti, Mauro, Landucci, Elisabetta, Fabi, Alessandra, Arecco, Luca, Perachino, Marta, Bruzzone, Marco, Boni, Luca, Lambertini, Matteo, Del Mastro, Lucia, and Regan, Meredith M.
- Published
- 2024
- Full Text
- View/download PDF
226. Fermentates of consortia of lactic acid bacteria and a cyanobacterium are effective against toxigenic fungi contaminating agricultural produces
- Author
-
La Bella, Emanuele, Riolo, Mario, Luz, Carlos, Baglieri, Andrea, Puglisi, Ivana, Meca, Giuseppe, and Olga Cacciola, Santa
- Published
- 2024
- Full Text
- View/download PDF
227. Incorporation of anti-PD1 or anti PD-L1 agents to platinum-based chemotherapy for the primary treatment of advanced or recurrent endometrial cancer. A meta-analysis
- Author
-
Bartoletti, Michele, Montico, Marcella, Lorusso, Domenica, Mazzeo, Roberta, Oaknin, Ana, Musacchio, Lucia, Scambia, Giovanni, Puglisi, Fabio, and Pignata, Sandro
- Published
- 2024
- Full Text
- View/download PDF
228. High-altitude accessions of Capsicum baccatum and C. pubescens as rootstocks to enhance suboptimal-temperature tolerance of pepper
- Author
-
Agnello, Michele, Mauro, Rosario Paolo, Cannata, Claudio, Puglisi, Ivana, and Giuffrida, Francesco
- Published
- 2024
- Full Text
- View/download PDF
229. A three-minute gram-scale synthesis of amines via ultrafast “on-water” in continuo organolithium addition to imines
- Author
-
Brucoli, Jacopo, Puglisi, Alessandra, Rossi, Sergio, Gariboldi, Davide, Brenna, Davide, Maule, Ivano, and Benaglia, Maurizio
- Published
- 2024
- Full Text
- View/download PDF
230. The dosage- and size-dependent effects of micro- and nanoplastics in lettuce roots and leaves at the growth, photosynthetic, and metabolomics levels
- Author
-
Zhang, Leilei, Vaccari, Filippo, Ardenti, Federico, Fiorini, Andrea, Tabaglio, Vincenzo, Puglisi, Edoardo, Trevisan, Marco, and Lucini, Luigi
- Published
- 2024
- Full Text
- View/download PDF
231. Co-exposure to environmental microplastic and the pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) induce distinctive alterations in the metabolome and microbial community structure in the gut of the earthworm Eisenia andrei
- Author
-
Boughattas, Iteb, Vaccari, Filippo, Zhang, Leilei, Bandini, Francesca, Miras-Moreno, Begoña, Missawi, Omayma, Hattab, Sabrine, Mkhinini, Marouane, Lucini, Luigi, Puglisi, Edoardo, and Banni, Mohamed
- Published
- 2024
- Full Text
- View/download PDF
232. Physically based machine learning for hierarchical materials
- Author
-
Fazio, Vincenzo, Pugno, Nicola Maria, Giustolisi, Orazio, and Puglisi, Giuseppe
- Published
- 2024
- Full Text
- View/download PDF
233. Liquid biopsy in colorectal cancer: Onward and upward
- Author
-
Torresan, Sara, de Scordilli, Marco, Bortolot, Martina, Di Nardo, Paola, Foltran, Luisa, Fumagalli, Arianna, Guardascione, Michela, Ongaro, Elena, and Puglisi, Fabio
- Published
- 2024
- Full Text
- View/download PDF
234. Breaking barriers in triple negative breast cancer (TNBC) – Unleashing the power of antibody-drug conjugates (ADCs)
- Author
-
Dri, Arianna, Arpino, Grazia, Bianchini, Giampaolo, Curigliano, Giuseppe, Danesi, Romano, De Laurentiis, Michelino, Del Mastro, Lucia, Fabi, Alessandra, Generali, Daniele, Gennari, Alessandra, Guarneri, Valentina, Santini, Daniele, Simoncini, Edda, Zamagni, Claudio, and Puglisi, Fabio
- Published
- 2024
- Full Text
- View/download PDF
235. Simons Observatory: Constraining inflationary gravitational waves with multitracer B-mode delensing
- Author
-
Namikawa, Toshiya, Lizancos, Anton Baleato, Robertson, Naomi, Sherwin, Blake D, Challinor, Anthony, Alonso, David, Azzoni, Susanna, Baccigalupi, Carlo, Calabrese, Erminia, Carron, Julien, Chinone, Yuji, Chluba, Jens, Coppi, Gabriele, Errard, Josquin, Fabbian, Giulio, Ferraro, Simone, Kalaja, Alba, Lewis, Antony, Madhavacheril, Mathew S, Meerburg, P Daniel, Meyers, Joel, Nati, Federico, Orlando, Giorgio, Poletti, Davide, Puglisi, Giuseppe, Remazeilles, Mathieu, Sehgal, Neelima, Tajima, Osamu, Teply, Grant, van Engelen, Alexander, Wollack, Edward J, Xu, Zhilei, Yu, Byeonghee, Zhu, Ningfeng, and Zonca, Andrea
- Subjects
Astronomical Sciences ,Physical Sciences ,Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Quantum Physics ,Nuclear & Particles Physics ,Mathematical physics ,Astronomical sciences ,Particle and high energy physics - Abstract
We introduce and validate a delensing framework for the Simons Observatory (SO), which will be used to improve constraints on inflationary gravitational waves by reducing the lensing noise in measurements of the B modes in CMB polarization. SO will initially observe CMB by using three small aperture telescopes and one large-aperture telescope. While polarization maps from small-aperture telescopes will be used to constrain inflationary gravitational waves, the internal CMB lensing maps used to delens will be reconstructed from data from the large-aperture telescope. Since lensing maps obtained from the SO data will be noise dominated on subdegree scales, the SO lensing framework constructs a template for lensing-induced B modes by combining internal CMB lensing maps with maps of the cosmic infrared background from Planck as well as galaxy density maps from the LSST survey. We construct a likelihood for constraining the tensor-to-scalar ratio r that contains auto and cross spectra between observed B modes and the lensing B-mode template. We test our delensing analysis pipeline on map-based simulations containing survey nonidealities, but that, for this initial exploration, does not include contamination from Galactic and extragalactic foregrounds. We find that the SO survey masking and inhomogeneous and atmospheric noise have very little impact on the delensing performance, and the r constraint becomes σ(r)≈0.0015 which is close to that obtained from the idealized forecasts in the absence of the Galactic foreground and is nearly a factor of 2 tighter than without delensing. We also find that uncertainties in the external large-scale structure tracers used in our multitracer delensing pipeline lead to bias much smaller than the 1σ statistical uncertainties.
- Published
- 2022
236. Correlating Sensory Assessment of Smoke-Tainted Wines with Inter-Laboratory Study Consensus Values for Volatile Phenols
- Author
-
Favell, James W, Wilkinson, Kerry L, Zigg, Ieva, Lyons, Sarah M, Ristic, Renata, Puglisi, Carolyn J, Wilkes, Eric, Taylor, Randell, Kelly, Duane, Howell, Greg, McKay, Marianne, Mokwena, Lucky, Plozza, Tim, Zhang, Pei, Bui, AnhDuyen, Porter, Ian, Frederick, Orrin, Karasek, Jasha, Szeto, Colleen, Pan, Bruce S, Tallman, Steve, McClure, Beth Anne, Feng, Hui, Hervé, Eric, Oberholster, Anita, Zandberg, Wesley F, and Noestheden, Matthew
- Subjects
Medicinal and Biomolecular Chemistry ,Organic Chemistry ,Chemical Sciences ,Consensus ,Cresols ,Guaiacol ,Humans ,Phenols ,Smoke ,Vitis ,Volatile Organic Compounds ,Wine ,fire ,grapes ,inter-laboratory study ,gas chromatography-mass spectrometry ,rate-all-that-apply ,smoke ,smoke taint ,volatile phenols ,wine ,Theoretical and Computational Chemistry ,Medicinal and biomolecular chemistry ,Organic chemistry - Abstract
Vineyard exposure to wildfire smoke can taint grapes and wine. To understand the impact of this taint, it is imperative that the analytical methods used are accurate and precise. This study compared the variance across nine commercial and research laboratories following quantitative analysis of the same set of smoke-tainted wines. In parallel, correlations between the interlaboratory consensus values for smoke-taint markers and sensory analyses of the same smoke-tainted wines were evaluated. For free guaiacol, the mean accuracy was 94 ± 11% in model wine, while the free cresols and 4-methylguaiacol showed a negative bias and/or decreased precision relative to guaiacol. Similar trends were observed in smoke-tainted wines, with the cresols and glycosidically bound markers demonstrating high variance. Collectively, the interlaboratory results show that data from a single laboratory can be used quantitatively to understand smoke-taint. Results from different laboratories, however, should not be directly compared due to the high variance between study participants. Correlations between consensus compositional data and sensory evaluations suggest the risk of perceivable smoke-taint can be predicted from free cresol concentrations, overcoming limitations associated with the occurrence of some volatile phenols, guaiacol in particular, as natural constituents of some grape cultivars and of the oak used for barrel maturation.
- Published
- 2022
237. Intracranial Pressure Monitoring In Nontraumatic Intraventricular Hemorrhage Rodent Model.
- Author
-
Peterson, Catherine, Hawk, Cameron, Puglisi, Chloe H, and Waldau, Ben
- Subjects
Biochemistry and Cell Biology ,Biological Sciences ,Brain Disorders ,Neurosciences ,Stroke ,Animals ,Cerebral Hemorrhage ,Cerebrovascular Circulation ,Intracranial Pressure ,Monitoring ,Physiologic ,Rodentia ,Psychology ,Cognitive Sciences ,Biochemistry and cell biology - Abstract
Survivors of intraventricular hemorrhage are often left with significant long-term memory impairment; thus, research utilizing intraventricular hemorrhage animal models is essential. In this study, we sought out ways to measure intracranial pressure, mean arterial pressure, and cerebral perfusion pressure during nontraumatic intraventricular hemorrhage in rodents. The experimental design included three Sprague Dawley groups: sham, standard 200 µl intraventricular hemorrhage, and vehicle control groups. By introducing an intraparenchymal fiberoptic pressure sensor, precise intracranial pressure measurements were obtained in all groups. Cerebral perfusion pressures were calculated with the knowledge of intracranial pressure and mean arterial pressure values. As expected, the intraventricular hemorrhage and vehicle control groups both experienced a rise in the intracranial pressure and subsequent decline in cerebral perfusion pressure during intraventricular injection of autologous blood and artificial cerebrospinal fluid, respectively. The addition of an intraparenchymal fiberoptic pressure sensor is beneficial in monitoring precise intracranial pressure changes.
- Published
- 2022
238. In-flight polarization angle calibration for LiteBIRD: blind challenge and cosmological implications
- Author
-
collaboration, The LiteBIRD, Krachmalnicoff, N, Matsumura, T, de la Hoz, E, Basak, S, Gruppuso, A, Minami, Y, Baccigalupi, C, Komatsu, E, Martínez-González, E, Vielva, P, Aumont, J, Aurlien, R, Azzoni, S, Banday, AJ, Barreiro, RB, Bartolo, N, Bersanelli, M, Calabrese, E, Carones, A, Casas, FJ, Cheung, K, Chinone, Y, Columbro, F, de Bernardis, P, Diego-Palazuelos, P, Errard, J, Finelli, F, Fuskeland, U, Galloway, M, Genova-Santos, RT, Gerbino, M, Ghigna, T, Giardiello, S, Gjerløw, E, Hazumi, M, Henrot-Versillé, S, Kisner, T, Lamagna, L, Lattanzi, M, Levrier, F, Luzzi, G, Maino, D, Masi, S, Migliaccio, M, Montier, L, Morgante, G, Mot, B, Nagata, R, Nati, F, Natoli, P, Pagano, L, Paiella, A, Paoletti, D, Patanchon, G, Piacentini, F, Polenta, G, Poletti, D, Puglisi, G, Remazeilles, M, Rubino-Martin, J, Sasaki, M, Shiraishi, M, Signorelli, G, Stever, S, Tartari, A, Tristram, M, Tsuji, M, Vacher, L, Wehus, IK, and Zannoni, M
- Subjects
Astronomical and Space Sciences ,Atomic ,Molecular ,Nuclear ,Particle and Plasma Physics ,Nuclear & Particles Physics - Abstract
We present a demonstration of the in-flight polarization angle calibration for the JAXA/ISAS second strategic large class mission, LiteBIRD, and estimate its impact on the measurement of the tensor-to-scalar ratio parameter, r, using simulated data. We generate a set of simulated sky maps with CMB and polarized foreground emission, and inject instrumental noise and polarization angle offsets to the 22 (partially overlapping) LiteBIRD frequency channels. Our in-flight angle calibration relies on nulling the EB cross correlation of the polarized signal in each channel. This calibration step has been carried out by two independent groups with a blind analysis, allowing an accuracy of the order of a few arc-minutes to be reached on the estimate of the angle offsets. Both the corrected and uncorrected multi-frequency maps are propagated through the foreground cleaning step, with the goal of computing clean CMB maps. We employ two component separation algorithms, the Bayesian-Separation of Components and Residuals Estimate Tool (B-SeCRET), and the Needlet Internal Linear Combination (NILC). We find that the recovered CMB maps obtained with algorithms that do not make any assumptions about the foreground properties, such as NILC, are only mildly affected by the angle miscalibration. However, polarization angle offsets strongly bias results obtained with the parametric fitting method. Once the miscalibration angles are corrected by EB nulling prior to the component separation, both component separation algorithms result in an unbiased estimation of the r parameter. While this work is motivated by the conceptual design study for LiteBIRD, its framework can be broadly applied to any CMB polarization experiment. In particular, the combination of simulation plus blind analysis provides a robust forecast by taking into account not only detector sensitivity but also systematic effects.
- Published
- 2022
239. Sub-millimetre compactness as a critical dimension to understand the Main Sequence of star-forming galaxies
- Author
-
Puglisi, Annagrazia, Daddi, Emanuele, Valentino, Francesco, Magdis, Georgios, Liu, Daizhong, Kokorev, Vasilii, Circosta, Chiara, Elbaz, David, Bournaud, Frederic, Gomez-Guijarro, Carlos, Jin, Shuowen, Madden, Suzanne, Sargent, Mark T., and Swinbank, Mark
- Subjects
Astrophysics - Astrophysics of Galaxies - Abstract
We study the interstellar medium (ISM) properties as a function of the molecular gas size for 77 infrared-selected galaxies at $z \sim 1.3$. Molecular gas sizes are measured on ALMA images that combine CO(2-1), CO(5-4) and underlying continuum observations, and include CO(4-3), CO(7-6)+[CI]($^3 P_2-^3P_1$), [CI]($^3 P_1-^3P_0$) observations for a subset of the sample. The $\gtrsim 46 \%$ of our galaxies have a compact molecular gas reservoir, and lie below the optical disks mass-size relation. Compact galaxies on and above the main sequence have higher CO excitation and star formation efficiency than galaxies with extended molecular gas reservoirs, as traced by CO(5-4)/CO(2-1) and CO(2-1)/$L_{\rm IR, SF}$ ratios. Average CO+[CI] spectral line energy distributions indicate higher excitation in compacts relative to extended sources. Using CO(2-1) and dust masses as molecular gas mass tracers, and conversion factors tailored to their ISM conditions, we measure lower gas fractions in compact main-sequence galaxies compared to extended sources. We suggest that the sub-millimetre compactness, defined as the ratio between the molecular gas and the stellar size, is an unavoidable information to be used with the main sequence offset to describe the ISM properties of galaxies, at least above $M_{\star} \geqslant 10^{10.6}$ M$_{\odot}$, where our observations fully probe the main sequence scatter. Our results are consistent with mergers driving the gas in the nuclear regions, enhancing the CO excitation and star formation efficiency. Compact main-sequence galaxies are consistent with being an early post-starburst population following a merger-driven starburst episode, stressing the important role of mergers in the evolution of massive galaxies., Comment: Accepted on MNRAS on October 11th 2021. Added Figure 10, 11, 12 following referee's comments. Abstract slightly modified to fit to arXiv's requirements
- Published
- 2021
- Full Text
- View/download PDF
240. MAORY: A Multi-conjugate Adaptive Optics RelaY for ELT
- Author
-
Ciliegi, Paolo, Agapito, Guido, Aliverti, Matteo, Annibali, Francesca, Arcidiacono, Carmelo, Balestra, Andrea, Baruffolo, Andrea, Bergomi, Maria, Bianco, Andrea, Bonaglia, Marco, Busoni, Lorenzo, Cantiello, Michele, Cascone, Enrico, Chauvin, Gael, Chinellato, Simonetta, Cianniello, Vincenzo, Correira, Jean Jacques, Cosentino, Giuseppe, Dall'Ora, Massimo, De Caprio, Vincenzo, Devaney, Nicholas, Di Antonio, Ivan, Di Cianno, Amico, Di Giammatteo, Ugo, D'Orazi, Valentina, Di Rico, Gianluca, Dolci, Mauro, Doutè, Sylvain, Eredia, Cristian, Farinato, Jacopo, Esposito, Simone, Fantinel, Daniela, Feautrier, Philippe, Foppiani, Italo, Giro, Enrico, Gluck, Laurance, Golden, Aaron, Goncharov, Alexander, Grani, Paolo, Gullieuszik, Marco, Haguenauer, Pierre, Hénault, Francois, Hubert, Zoltan, Louarn, Miska Le, Magrin, Demetrio, Maiorano, Elisabetta, Mannucci, Filippo, Malone, Deborah, Marafatto, Luca, Moraux, Estelle, Munari, Matteo, Oberti, Sylvan, Pariani, Giorgio, Pettazzi, Lorenzo, Plantet, Cedric, Podio, Linda, Portaluri, Elisa, Puglisi, Alfio, Ragazzoni, Roberto, Rakich, Andrew, Rebaut, Patrick, Redaelli, Edoardo, Redman, Matt, Riva, Marco, Rochat, Sylvain, Rodeghiero, Gabriele, Salasnich, Bernardo, Saracco, Paolo, Sordo, Rosanna, Spavone, Marilena, Sztefek, Marie-Helene, Valentini, Angelo, Vanzella, Eros, Verinaud, Christophe, Xompero, Marco, and Zaggia, Simone
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
MAORY is the adaptive optics module for ELT providing two gravity invariant ports with the same optical quality for two different client instruments. It enable high angular resolution observations in the near infrared over a large field of view (~1 arcmin2 ) by real time compensation of the wavefront distortions due to atmospheric turbulence. Wavefront sensing is performed by laser and natural guide stars while the wavefront sensor compensation is performed by an adaptive deformable mirror in MAORY which works together with the telescope's adaptive and tip tilt mirrors M4 and M5 respectively., Comment: 4 pages, 4 figures
- Published
- 2021
- Full Text
- View/download PDF
241. The HOSTS survey: evidence for an extended dust disk and constraints on the presence of giant planets in the Habitable Zone of $\beta$ Leo
- Author
-
Defrère, D., Hinz, P. M., Kennedy, G. M., Stone, J., Rigley, J., Ertel, S., Gaspar, A., Bailey, V. P., Hoffmann, W. F., Mennesson, B., Millan-Gabet, R., Danchi, W. C., Absil, O., Arbo, P., Beichman, C., Bonavita, M., Brusa, G., Bryden, G., Downey, E. C., Esposito, S., Grenz, P., Haniff, C., Hill, J. M., Leisenring, J. M., Males, J. R., McMahon, T. J., Montoya, M., Morzinski, K. M., Pinna, E., Puglisi, A., Rieke, G., Roberge, A., Rousseau, H., Serabyn, E., Spalding, E., Skemer, A. J., Stapelfeldt, K., Su, K., Vaz, A., Weinberger, A. J., and Wyatt, M. C.
- Subjects
Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
The young (50-400 Myr) A3V star $\beta$ Leo is a primary target to study the formation history and evolution of extrasolar planetary systems as one of the few stars with known hot ($\sim$1600$^\circ$K), warm ($\sim$600$^\circ$K), and cold ($\sim$120$^\circ$K) dust belt components. In this paper, we present deep mid-infrared measurements of the warm dust brightness obtained with the Large Binocular Telescope Interferometer (LBTI) as part of its exozodiacal dust survey (HOSTS). The measured excess is 0.47\%$\pm$0.050\% within the central 1.5 au, rising to 0.81\%$\pm$0.026\% within 4.5 au, outside the habitable zone of $\beta$~Leo. This dust level is 50 $\pm$ 10 times greater than in the solar system's zodiacal cloud. Poynting-Robertson drag on the cold dust detected by Spitzer and Herschel under-predicts the dust present in the habitable zone of $\beta$~Leo, suggesting an additional delivery mechanism (e.g.,~comets) or an additional belt at $\sim$5.5 au. A model of these dust components is provided which implies the absence of planets more than a few Saturn masses between $\sim$5 au and the outer belt at $\sim$40 au. We also observationally constrain giant planets with the LBTI imaging channel at 3.8~$\mu$m wavelength. Assuming an age of 50 Myr, any planet in the system between approximately 5 au to 50 au must be less than a few Jupiter masses, consistent with our dust model. Taken together, these observations showcase the deep contrasts and detection capabilities attainable by the LBTI for both warm exozodiacal dust and giant exoplanets in or near the habitable zone of nearby stars., Comment: 11 pages, 9 figures, accepted for publication in Astronomical Journal
- Published
- 2021
- Full Text
- View/download PDF
242. Weighted Ancestors in Suffix Trees Revisited
- Author
-
Belazzougui, Djamal, Kosolobov, Dmitry, Puglisi, Simon J., and Raman, Rajeev
- Subjects
Computer Science - Data Structures and Algorithms - Abstract
The weighted ancestor problem is a well-known generalization of the predecessor problem to trees. It is known to require $\Omega(\log\log n)$ time for queries provided $O(n\mathop{\mathrm{polylog}} n)$ space is available and weights are from $[0..n]$, where $n$ is the number of tree nodes. However, when applied to suffix trees, the problem, surprisingly, admits an $O(n)$-space solution with constant query time, as was shown by Gawrychowski, Lewenstein, and Nicholson (Proc. ESA 2014). This variant of the problem can be reformulated as follows: given the suffix tree of a string $s$, we need a data structure that can locate in the tree any substring $s[p..q]$ of $s$ in $O(1)$ time (as if one descended from the root reading $s[p..q]$ along the way). Unfortunately, the data structure of Gawrychowski et al. has no efficient construction algorithm, limiting its wider usage as an algorithmic tool. In this paper we resolve this issue, describing a data structure for weighted ancestors in suffix trees with constant query time and a linear construction algorithm. Our solution is based on a novel approach using so-called irreducible LCP values., Comment: 15 pages, 5 figures
- Published
- 2021
243. Optimisation of an active heat engine
- Author
-
Gronchi, Giulia and Puglisi, Andrea
- Subjects
Condensed Matter - Soft Condensed Matter ,Condensed Matter - Statistical Mechanics - Abstract
Optimisation of heat engines at the micro-scale has applications in biological and artificial nano-technology, and stimulates theoretical research in non-equilibrium statistical physics. Here we consider non-interacting overdamped particles confined by an external harmonic potential, in contact either with a thermal reservoir or with a stochastic self-propulsion force (active Ornstein-Uhlenbeck model). A cyclical machine is produced by periodic variation of the parameters of the potential and of the noise. An exact mapping between the passive and the active model allows us to define the effective temperature $T_{eff}(t)$ which is meaningful for the thermodynamic performance of the engine. We show that $T_{eff}(t)$ is different from all other known active temperatures, typically used in static situations. The mapping allows us to optimise the active engine, whatever are the values of the persistence time or self-propulsion velocity. In particular - through linear irreversible thermodynamics (small amplitude of the cycle) - we give explicit formula for the optimal cycle period and phase delay (between the two modulated parameters, stiffness and temperature) achieving maximum power with Curzon-Ahlborn efficiency. In the quasi-static limit, the formula for $T_{eff}(t)$ simplifies and coincides with a recently proposed temperature for stochastic thermodynamics, bearing a compact expression for the maximum efficiency. A point - overlooked in recent literature - is made about the difficulty in defining efficiency without a consistent definition of effective temperature., Comment: 18 pages, 6 pages, submitted for publication
- Published
- 2021
- Full Text
- View/download PDF
244. Overview of the Medium and High Frequency Telescopes of the LiteBIRD satellite mission
- Author
-
Montier, L., Mot, B., de Bernardis, P., Maffei, B., Pisano, G., Columbro, F., Gudmundsson, J. E., Henrot-Versillé, S., Lamagna, L., Montgomery, J., Prouvé, T., Russell, M., Savini, G., Stever, S., Thompson, K. L., Tsujimoto, M., Tucker, C., Westbrook, B., Ade, P. A. R., Adler, A., Allys, E., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Basak, S., Beall, J., Beck, D., Beckman, S., Bermejo, J., Bersanelli, M., Bonis, J., Borrill, J., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M., Bucher, M., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J. F., Colombo, L., Cubas, J., Cukierman, A., Curtis, D., D'Alessandro, G., Dachlythra, N., De Petris, M., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Duband, L., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R., Gerbino, M., Gervasi, M., Ghigna, T., Gjerløw, E., Gradziel, M. L., Grain, J., Grupp, F., Gruppuso, A., de Haan, T., Halverson, N. W., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hirota, Y., Hivon, E., Hlozek, R. A., Hoshino, Y., de la Hoz, E., Hubmayr, J., Ichiki, K., Iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lanen, J. V., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Maciaszek, T., Maino, D., Maki, M., Mandelli, S., Martinez-Gonzalez, E., Masi, S., Matsumura, T., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Morgante, G., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Namikawa, T., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., O'Sullivan, C., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Patanchon, G., Peloton, J., Piacentini, F., Polenta, G., Poletti, D., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J. A., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Stompor, R., Sugai, H., Sugiyama, S., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Taylor, E., Terao, Y., Thommesen, H., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Ullom, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wehus, I., Weller, J., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zannoni, M., and Zonca, A.
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
LiteBIRD is a JAXA-led Strategic Large-Class mission designed to search for the existence of the primordial gravitational waves produced during the inflationary phase of the Universe, through the measurements of their imprint onto the polarization of the cosmic microwave background (CMB). These measurements, requiring unprecedented sensitivity, will be performed over the full sky, at large angular scales, and over 15 frequency bands from 34GHz to 448GHz. The LiteBIRD instruments consist of three telescopes, namely the Low-, Medium- and High-Frequency Telescope (respectively LFT, MFT and HFT). We present in this paper an overview of the design of the Medium-Frequency Telescope (89-224GHz) and the High-Frequency Telescope (166-448GHz), the so-called MHFT, under European responsibility, which are two cryogenic refractive telescopes cooled down to 5K. They include a continuous rotating half-wave plate as the first optical element, two high-density polyethylene (HDPE) lenses and more than three thousand transition-edge sensor (TES) detectors cooled to 100mK. We provide an overview of the concept design and the remaining specific challenges that we have to face in order to achieve the scientific goals of LiteBIRD., Comment: SPIE Conference
- Published
- 2021
- Full Text
- View/download PDF
245. LiteBIRD: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization
- Author
-
Hazumi, M., Ade, P. A. R., Adler, A., Allys, E., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Baccigalupi, C., Banday, A. J., Banjeri, R., Barreiro, R. B., Basak, S., Beall, J., Beck, D., Beckman, S., Bermejo, J., de Bernardis, P., Bersanelli, M., Bonis, J., Borrill, J., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M., Bucher, M., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J. F., Colombo, L., Columbro, F., Cubas, J., Cukierman, A., Curtis, D., D'Alessandro, G., Dachlythra, N., De Petris, M., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Duband, L., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R., Gerbino, M., Gervasi, M., Ghigna, T., Gjerløw, E., Gradziel, M. L., Grain, J., Grupp, F., Gruppuso, A., Gudmundsson, J. E., de Haan, T., Halverson, N. W., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Henrot-Versillé, S., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hirota, Y., Hivon, E., Hlozek, R. A., Hoshino, Y., de la Hoz, E., Hubmayr, J., Ichiki, K., Iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Martinez-Gonzalez, E., Masi, S., Matsumura, T., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Namikawa, T., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., Noviello, F., O'Sullivan, C., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Patanchon, G., Peloton, J., Piacentini, F., Pisano, G., Polenta, G., Poletti, D., Prouvé, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J. A., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Stever, S., Stompor, R., Sugai, H., Sugiyama, S., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Taylor, E., Terao, Y., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ullom, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wehus, I., Weller, J., Westbrook, B., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zannoni, M., and Zonca, A.
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Cosmology and Nongalactic Astrophysics ,General Relativity and Quantum Cosmology ,High Energy Physics - Experiment ,High Energy Physics - Phenomenology - Abstract
LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics. JAXA selected LiteBIRD in May 2019 as a strategic large-class (L-class) mission, with its expected launch in the late 2020s using JAXA's H3 rocket. LiteBIRD plans to map the cosmic microwave background (CMB) polarization over the full sky with unprecedented precision. Its main scientific objective is to carry out a definitive search for the signal from cosmic inflation, either making a discovery or ruling out well-motivated inflationary models. The measurements of LiteBIRD will also provide us with an insight into the quantum nature of gravity and other new physics beyond the standard models of particle physics and cosmology. To this end, LiteBIRD will perform full-sky surveys for three years at the Sun-Earth Lagrangian point L2 for 15 frequency bands between 34 and 448 GHz with three telescopes, to achieve a total sensitivity of 2.16 micro K-arcmin with a typical angular resolution of 0.5 deg. at 100GHz. We provide an overview of the LiteBIRD project, including scientific objectives, mission requirements, top-level system requirements, operation concept, and expected scientific outcomes., Comment: 20 pages, 9 figures
- Published
- 2021
- Full Text
- View/download PDF
246. Long range correlations and slow time scales in a boundary driven granular model
- Author
-
Plati, Andrea and Puglisi, Andrea
- Subjects
Condensed Matter - Statistical Mechanics ,Condensed Matter - Soft Condensed Matter - Abstract
We consider a velocity field with linear viscous interactions defined on a one dimensional lattice. Brownian baths with different parameters can be coupled to the boundary sites and to the bulk sites, determining different kinds of non-equilibrium steady states or free-cooling dynamics. Analytical results for spatial and temporal correlations are provided by analytical diagonalisation of the system's equations in the infinite size limit. We demonstrate that spatial correlations are scale-free and time-scales become exceedingly long when the system is driven only at the boundaries. On the contrary, in the case a bath is coupled to the bulk sites too, an exponential correlation decay is found with a finite characteristic length. This is also true in the free cooling regime, but in this case the correlation length grows diffusively in time. We discuss the crucial role of boundary driving for long-range correlations and slow time-scales, proposing an analogy between this simplified dynamical model and dense vibro-fluidized granular materials. Several generalizations and connections with the statistical physics of active matter are also suggested.
- Published
- 2021
247. An upper bound for the nonsolvable length of a finite group in terms of its shortest law
- Author
-
Fumagalli, Francesco, Leinen, Felix, and Puglisi, Orazio
- Subjects
Mathematics - Group Theory ,20F22, 20B05, 20D99 - Abstract
Every finite group $G$ has a normal series each of whose factors is either a solvable group or a direct product of non-abelian simple groups. The minimum number of nonsolvable factors, attained on all possible such series in $G$, is called the \emph{nonsolvable length} $\lambda(G)$ of $G$. In the present paper, we prove a theorem about permutation representations of groups of fixed nonsolvable length. As a consequence, we show that in a finite group of nonsolvable length at least $n$, no non-trivial word of length at most $n$ (in any number of variables) can be a law. This result is then used to give a bound on $\lambda(G)$ in terms of the length of the shortest law of $G$, thus confirming a conjecture of Larsen. Moreover our Theorem C can be used to give a positive answer, in the case $p=2$, to a problem raised by Khukhro and Shumyatsky, concerning the non-$p$-solvable length of finite groups., Comment: Some changes have been made according the the referee's suggestions. To appear in Proceedings of The London Mathematical Society
- Published
- 2021
248. Bringing SOUL on sky
- Author
-
Pinna, Enrico, Rossi, Fabio, Puglisi, Alfio, Agapito, Guido, Bonaglia, Marco, Plantet, Cedric, Mazzoni, Tommaso, Briguglio, Runa, Carbonaro, Luca, Xompero, Marco, Grani, Paolo, Riccardi, Armando, Esposito, Simone, Hinz, Phil, Vaz, Amali, Ertel, Steve, Montoya, Oscar M., Durney, Oliver, Christou, Julian, Miller, Doug L., Taylor, Greg, Cavallaro, Alessandro, and Lefebvre, Michael
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
The SOUL project is upgrading the 4 SCAO systems of LBT, pushing the current guide star limits of about 2 magnitudes fainter thanks to Electron Multiplied CCD detector. This improvement will open the NGS SCAO correction to a wider number of scientific cases from high contrast imaging in the visible to extra-galactic source in the NIR. The SOUL systems are today the unique case where pyramid WFS, adaptive secondary and EMCCD are used together. This makes SOUL a pathfinder for most of the ELT SCAO systems like the one of GMT, MICADO and HARMONI of E-ELT, where the same key technologies will be employed. Today we have 3 SOUL systems installed on the telescope in commissioning phase. The 4th system will be installed in a few months. We will present here the results achieved during daytime testing and commissioning nights up to the present date., Comment: 11 pages, 9 figures, 1 table. AO4ELT6 proceedings
- Published
- 2021
249. CO excitation, molecular gas density and interstellar radiation field in local and high-redshift galaxies
- Author
-
Liu, Daizhong, Daddi, Emanuele, Schinnerer, Eva, Saito, Toshiki, Leroy, Adam, Silverman, John, Valentino, Francesco, Magdis, Georgios, Gao, Yu, Jin, Shuowen, Puglisi, Annagrazia, and Groves, Brent
- Subjects
Astrophysics - Astrophysics of Galaxies - Abstract
We study the Carbon Monoxide (CO) excitation, mean molecular gas density and interstellar radiation field (ISRF) intensity in a comprehensive sample of 76 galaxies from local to high redshift (z~0-6), selected based on detections of their CO transitions J=2-1 and 5-4 and their optical/infrared/(sub-)millimeter spectral energy distributions (SEDs). We confirm the existence of a tight correlation between CO excitation as traced by the CO(5-4)/(2-1) line ratio (R52), and the mean ISRF intensity U as derived from infrared SED fitting using dust SED templates. By modeling the molecular gas density probability distribution function (PDF) in galaxies and predicting CO line ratios with large velocity gradient radiative transfer calculations, we present a framework linking global CO line ratios to the mean molecular hydrogen gas density nH2 and kinetic temperature Tkin. Mapping in this way observed R52 ratios to nH2 and Tkin probability distributions, we obtain positive U-nH2 and U-Tkin correlations, which imply a scenario in which the ISRF in galaxies is mainly regulated by Tkin and (non-linearly) by nH2. A small fraction of starburst galaxies showing enhanced nH2 could be due to merger-driven compaction. Our work demonstrates that ISRF and CO excitation are tightly coupled, and that density-PDF modeling is a promising tool for probing detailed ISM properties inside galaxies., Comment: Accepted for publication in ApJ
- Published
- 2021
- Full Text
- View/download PDF
250. Concept Design of Low Frequency Telescope for CMB B-mode Polarization satellite LiteBIRD
- Author
-
Sekimoto, Y., Ade, P. A. R., Adler, A., Allys, E., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Basak, S., Beall, J., Beck, D., Beckman, S., Bermejo, J., de Bernardis, P., Bersanelli, M., Bonis, J., Borrill, J., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M., Bucher, M., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J. F., Colombo, L., Columbro, F., Cubas, J., Cukierman, A., Curtis, D., D'Alessandro, G., Dachlythra, N., De Petris, M., Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Duband, L., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R., Gerbino, M., Gervasi, M., Ghigna, T., Gjerløw, E., Gradziel, M. L., Grain, J., Grupp, F., Gruppuso, A., Gudmundsson, J. E., de Haan, T., Halverson, N. W., Hargrave, P., Hasebe, T., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versillé, S., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hirota, Y., Hivon, E., Hlozek, R. A., Hoshino, Y., de la Hoz, E., Hubmayr, J., Ichiki, K., iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Martinez-Gonzalez, E., Masi, S., Matsumura, T., Mennella, A., Migliaccio, M., Minanmi, Y., Mitsuda, K., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Namikawa, T., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., O'Sullivan, C., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Patanchon, G., Peloton, J., Piacentini, F., Pisano, G., Polenta, G., Poletti, D., Prouvé, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J. A., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Stever, S., Stompor, R., Sugai, H., Sugiyama, S., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Taylor, E., Terao, Y., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ullom, J., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wehus, I., Weller, J., Westbrook, B., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zannoni, M., and Zonca, A.
- Subjects
Astrophysics - Instrumentation and Methods for Astrophysics ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
LiteBIRD has been selected as JAXA's strategic large mission in the 2020s, to observe the cosmic microwave background (CMB) $B$-mode polarization over the full sky at large angular scales. The challenges of LiteBIRD are the wide field-of-view (FoV) and broadband capabilities of millimeter-wave polarization measurements, which are derived from the system requirements. The possible paths of stray light increase with a wider FoV and the far sidelobe knowledge of $-56$ dB is a challenging optical requirement. A crossed-Dragone configuration was chosen for the low frequency telescope (LFT : 34--161 GHz), one of LiteBIRD's onboard telescopes. It has a wide field-of-view ($18^\circ \times 9^\circ$) with an aperture of 400 mm in diameter, corresponding to an angular resolution of about 30 arcminutes around 100 GHz. The focal ratio f/3.0 and the crossing angle of the optical axes of 90$^\circ$ are chosen after an extensive study of the stray light. The primary and secondary reflectors have rectangular shapes with serrations to reduce the diffraction pattern from the edges of the mirrors. The reflectors and structure are made of aluminum to proportionally contract from warm down to the operating temperature at $5\,$K. A 1/4 scaled model of the LFT has been developed to validate the wide field-of-view design and to demonstrate the reduced far sidelobes. A polarization modulation unit (PMU), realized with a half-wave plate (HWP) is placed in front of the aperture stop, the entrance pupil of this system. A large focal plane with approximately 1000 AlMn TES detectors and frequency multiplexing SQUID amplifiers is cooled to 100 mK. The lens and sinuous antennas have broadband capability. Performance specifications of the LFT and an outline of the proposed verification plan are presented., Comment: 21 pages, 14 figures
- Published
- 2021
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.