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4. NeBula: TEAM CoSTAR's Robotic Autonomy Solution that Won Phase II of DARPA Subterranean Challenge.

Author

Ali Agha, Kyohei Otsu, Benjamin Morrell, David D. Fan, Rohan Thakker, Angel Santamaria-Navarro, Sung-Kyun Kim, Amanda Bouman, Xianmei Lei, Jeffrey A. Edlund, Muhammad Fadhil Ginting, Kamak Ebadi, Matthew Anderson, Torkom Pailevanian, Edward Terry, Michael T. Wolf, Andrea Tagliabue, Tiago Vaquero, Matteo Palieri, Scott Tepsuporn, Yun Chang, Arash Kalantari, Fernando Chavez, Brett Thomas Lopez, Nobuhiro Funabiki, Gregory Miles, Thomas Touma, Alessandro Buscicchio, Jesus Tordesillas, Nikhilesh Alatur, Jeremy Nash, William Walsh, Sunggoo Jung, Hanseob Lee, Christoforos Kanellakis, John Mayo, Scott Harper, Marcel Kaufmann, Anushri Dixit, Gustavo Correa, Carlyn Lee, Jay Gao, Gene Merewether, Jairo Maldonado-Contreras, Gautam Salhotra, Maíra Saboia da Silva, Benjamin Ramtoula, Seyed Abolfazl Fakoorian, Alexander Hatteland, Taeyeon Kim, Tara Bartlett, Alex Stephens, Leon Kim, Chuck Bergh, Eric Heiden, Thomas Lew, Abhishek Cauligi, Tristan Heywood, Andrew Kramer, Henry A. Leopold, Hovhannes Melikyan, Hyungho Chris Choi, Shreyansh Daftry, Olivier Toupet, Inhwan Wee, Abhishek Thakur, Micah Feras, Giovanni Beltrame, George Nikolakopoulos, David Hyunchul Shim, Luca Carlone, and Joel Burdick

Published
2022
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9. NeBula: Quest for Robotic Autonomy in Challenging Environments; TEAM CoSTAR at the DARPA Subterranean Challenge.

Author

Ali Agha, Kyohei Otsu, Benjamin Morrell, David D. Fan, Rohan Thakker, Angel Santamaria-Navarro, Sung-Kyun Kim, Amanda Bouman, Xianmei Lei, Jeffrey A. Edlund, Muhammad Fadhil Ginting, Kamak Ebadi, Matthew Anderson, Torkom Pailevanian, Edward Terry, Michael T. Wolf, Andrea Tagliabue, Tiago Stegun Vaquero, Matteo Palieri, Scott Tepsuporn, Yun Chang, Arash Kalantari, Fernando Chavez, Brett Thomas Lopez, Nobuhiro Funabiki, Gregory Miles, Thomas Touma, Alessandro Buscicchio, Jesus Tordesillas, Nikhilesh Alatur, Jeremy Nash, William Walsh, Sunggoo Jung, Hanseob Lee, Christoforos Kanellakis, John Mayo, Scott Harper, Marcel Kaufmann, Anushri Dixit, Gustavo Correa, Carlyn Lee, Jay Gao, Gene Merewether, Jairo Maldonado-Contreras, Gautam Salhotra, Maíra Saboia da Silva, Benjamin Ramtoula, Yuki Kubo, Seyed Abolfazl Fakoorian, Alexander Hatteland, Taeyeon Kim, Tara Bartlett, Alex Stephens, Leon Kim, Chuck Bergh, Eric Heiden, Thomas Lew, Abhishek Cauligi, Tristan Heywood, Andrew Kramer, Henry A. Leopold, Hyungho Chris Choi, Shreyansh Daftry, Olivier Toupet, Inhwan Wee, Abhishek Thakur, Micah Feras, Giovanni Beltrame, George Nikolakopoulos, David Hyunchul Shim, Luca Carlone, and Joel Burdick

Published
2021

10. Two-stage calibration of a 6-axis force-torque sensor for robust operation in the Mars 2020 robot arm

Author

Julie Townsend, Ryan L. McCormick, Matthew Frost, James Wisnowski, Yumi Iwashita, Jeffrey A. Edlund, Jacqueline H. Sly, Kristopher L. Kriechbaum, William Raff, and Ethan W. Schaler

Subjects
Computer science, Mars Exploration Program, Computer Science Applications, Task (project management), Human-Computer Interaction, Hardware and Architecture, Control and Systems Engineering, Martian surface, Calibration, Torque sensor, Stage (hydrology), Robotic arm, Software, Simulation
Abstract

A main objective of the Mars 2020 rover mission (Perseverance) is to collect and preserve samples of rock and soil from the Martian surface. To accomplish this task, the Perseverance Rover carries ...

Published
2021
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11. CHORD: Distributed Data-Sharing via Hybrid ROS 1 and 2 for Multi-Robot Exploration of Large-Scale Complex Environments

Author

Kyohei Otsu, Jay Gao, Ali-akbar Agha-mohammadi, Muhammad Fadhil Ginting, and Jeffrey A. Edlund

Subjects
0209 industrial biotechnology, Control and Optimization, Computer science, Distributed computing, Biomedical Engineering, 02 engineering and technology, Communications system, 020901 industrial engineering & automation, Artificial Intelligence, 0202 electrical engineering, electronic engineering, information engineering, Chord (peer-to-peer), Event (computing), business.industry, Mechanical Engineering, Quality of service, Robotics, Computer Science Applications, Human-Computer Interaction, Data sharing, Control and Systems Engineering, Robot, 020201 artificial intelligence & image processing, Computer Vision and Pattern Recognition, Artificial intelligence, business, Robotics middleware
Abstract

A well-structured and reliable communication system is key to the successful operations of multi-robot systems. In this letter, we present our design and implementation of a multi-robot communication architecture CHORD (Collaborative High-bandwidth Operations with Radio Droppables) based on two popular robotics middleware, ROS 1 and ROS 2. We discuss the benefit and best practices of combining two different frameworks that share the same spirit and show its performance from large-scale real-world experiments. The proposed system is developed as part of Team CoSTAR's effort for the DARPA Subterranean (SubT) Challenge. The system has been field-proved and demonstrated in the Urban Circuit event, where team CoSTAR won first place. To our knowledge, this work is the first real-world demonstration of a ROS 2-based multi-robot system in such large-scale extreme environments. From the significant improvement of the communication performance and the ease of transition from existing ROS 1 systems, this work encourages wider adoption of ROS 2 in field robotics applications.

Published
2021
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12. Markov Brains: A Technical Introduction.

Author

Arend Hintze, Jeffrey A. Edlund, Randal S. Olson, David B. Knoester, Jory Schossau, Larissa Albantakis, Ali Tehrani-Saleh, Peter D. Kvam, Leigh Sheneman, Heather Goldsby, Clifford Bohm, and Christoph Adami

Published
2017

14. Axel.

Author

Pablo Abad-Manterola, Jeffrey A. Edlund, Joel W. Burdick, Albert Wu, Thomas Oliver, Issa A. D. Nesnas, and Johanna Cecava

Published
2009
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17. Supervised Autonomy for Communication-degraded Subterranean Exploration by a Robot Team

Author

Tristan Heywood, Ali-akbar Agha-mohammadi, Michael Wolf, Rohan Thakker, Tiago Stegun Vaquero, Scott Tepsuporn, Gregory Miles, Jeffrey A. Edlund, Kyohei Otsu, and William Walsh

Subjects
0209 industrial biotechnology, Situation awareness, business.industry, Computer science, media_common.quotation_subject, Ranging, Robotics, 02 engineering and technology, Exploration of Mars, 01 natural sciences, Phase (combat), Field (computer science), 020901 industrial engineering & automation, Aeronautics, Planet, Robot, Artificial intelligence, 010503 geology, business, Autonomy, 0105 earth and related environmental sciences, media_common
Abstract

The importance of autonomy in robotics is magnified when the robots need to be deployed and operated in areas that are too dangerous or not accessible for humans, ranging from disaster areas (to assist in emergency situations) to Mars exploration (to uncover the mystery of our neighboring planet). The DARPA Subterranean (SubT) Challenge presents a great opportunity and a formidable robotics challenge to foster such technological advancement for operations in extreme and underground environments. Robot teams are expected to rapidly map, navigate, and search underground environments including natural cave networks, tunnel systems, and urban underground infrastructure. Subterranean environments pose significant challenges for manned and unmanned operations due to limited situational awareness. In the first phase of the DARPA Subterranean Challenge (held in August 2019; targeting underground tunnels and mines), Team CoSTAR, led by NASA JPL, placed second among 11 teams across the world, accurately mapping several kilometers of two mine systems and localizing 17 target objects in the course of four one-hour missions. While the main goal of Team CoSTAR at the end of this three-year challenge (August 2021) is a fully autonomous robotic solution, this paper describes Team CoSTAR's results in the first phase of the challenge (August 2019), focusing on supervised autonomy of a multi-robot team under severe communication constraints. This paper also presents the design and initial results obtained from field test campaigns conducted in various tunnel-like environments, leading to the competition.

Published
2020
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18. Integrated information increases with fitness in the evolution of animats.

Author

Jeffrey A Edlund, Nicolas Chaumont, Arend Hintze, Christof Koch, Giulio Tononi, and Christoph Adami

Subjects
Biology (General), QH301-705.5
Abstract

One of the hallmarks of biological organisms is their ability to integrate disparate information sources to optimize their behavior in complex environments. How this capability can be quantified and related to the functional complexity of an organism remains a challenging problem, in particular since organismal functional complexity is not well-defined. We present here several candidate measures that quantify information and integration, and study their dependence on fitness as an artificial agent ("animat") evolves over thousands of generations to solve a navigation task in a simple, simulated environment. We compare the ability of these measures to predict high fitness with more conventional information-theoretic processing measures. As the animat adapts by increasing its "fit" to the world, information integration and processing increase commensurately along the evolutionary line of descent. We suggest that the correlation of fitness with information integration and with processing measures implies that high fitness requires both information processing as well as integration, but that information integration may be a better measure when the task requires memory. A correlation of measures of information integration (but also information processing) and fitness strongly suggests that these measures reflect the functional complexity of the animat, and that such measures can be used to quantify functional complexity even in the absence of fitness data.

Published
2011
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20. Axel and DuAxel rovers for the sustainable exploration of extreme terrains

Author

Robert N. Miyake, Jack Morrison, Joel W. Burdick, Jaret Matthews, Issa A. D. Nesnas, Benjamin Solish, Pablo Abad-Manterola, Robert C. Anderson, Robert D. Peters, Melissa M. Tanner, and Jeffrey A. Edlund

Subjects
Martian, Control and Systems Engineering, business.industry, Robot, Design elements and principles, Terrain, Field tests, Aerospace engineering, Key features, business, Geology, Computer Science Applications, Remote sensing
Abstract

Some of the most appealing science targets for future exploration missions in our solar system lie in terrains that are inaccessible to state-of-the-art rover technology. This paper discusses the challenges and constraints of designing a robotic explorer for these “extreme'' terrains and then examines the trade-offs among different mobility architectures. To address many of these challenges, we have developed the Axel family of rovers. The Axel rover is a two-wheeled tethered robot capable of rappelling down steep slopes and traversing rocky terrain. The DuAxel rover, which is a four-wheeled vehicle formed from two Axel rovers, provides untethered mobility to get to extreme terrains. We describe the basic design principles of these rovers and review our efforts to implement the key features of the Axel concept. Limitations found during experiments with prior Axel rover prototypes led to the design of a third-generation Axel rover. We describe the features of this new rover and then present a thermal analysis conducted to assess the feasibility of exploring lunar cold traps, which are expected to have a temperature range of 40 to 70 K. We conclude the paper with results showcasing Axel and DuAxel's extreme-terrain performance as evaluated during two recent field tests in a steeply sloped Southern California rock quarry and at a location in Arizona that closely resembles rugged Martian terrain. We also summarize lessons learned during the Axel development program. © 2012 Wiley Periodicals, Inc. © 2012 Wiley Periodicals, Inc.

Published
2012
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21. A method for the detection of gravitational waves from inspiralling compact binaries using a fast chirp transform

Author

P. Charlton, Fredrick A. Jenet, Jeffrey A. Edlund, Linqing Wen, Albert Lazzarini, S. B. Anderson, Thomas A. Prince, J. K. Blackburn, and Massimo Tinto

Subjects
Physics, Physics and Astronomy (miscellaneous), Gravitational wave, business.industry, Binary number, symbols.namesake, Formalism (philosophy of mathematics), Interferometry, Optics, Fourier transform, Chirp, symbols, Constant frequency, business
Abstract

The fast chirp transform (FCT) provides a powerful formalism for the detection of signals with variable frequency, in much the same way that the Fourier transform provides a formalism for the detection of constant frequency signals. The FCT algorithm has significant applications in the detection of gravitational waves, particularly the gravitational wave signal produced by an inspiralling compact binary. We report on progress towards a parallelized search code to identify inspiral events in interferometer data and estimate the mass parameters.

Published
2002
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22. Neural Prediction Errors Reveal a Risk-Sensitive Reinforcement-Learning Process in the Human Brain

Author

Yael Niv, Jeffrey A. Edlund, John P. O'Doherty, and Peter Dayan

Subjects
Male, Adolescent, Process (engineering), Conditioning, Classical, Models, Psychological, Choice Behavior, Nucleus Accumbens, Young Adult, Risk-Taking, Reward, Predictive Value of Tests, Reinforcement learning, Humans, Learning, Sensitivity (control systems), Neural correlates of consciousness, General Neuroscience, Brain, Variance (accounting), Articles, Trial and error, A priori and a posteriori, Economic model, Female, Psychology, Neuroscience, Reinforcement, Psychology, Cognitive psychology
Abstract

Humans and animals are exquisitely, though idiosyncratically, sensitive to risk or variance in the outcomes of their actions. Economic, psychological, and neural aspects of this are well studied when information about risk is provided explicitly. However, we must normally learn about outcomes from experience, through trial and error. Traditional models of such reinforcement learning focus on learning about the mean reward value of cues and ignore higher order moments such as variance. We used fMRI to test whether the neural correlates of human reinforcement learning are sensitive to experienced risk. Our analysis focused on anatomically delineated regions of a priori interest in the nucleus accumbens, where blood oxygenation level-dependent (BOLD) signals have been suggested as correlating with quantities derived from reinforcement learning. We first provide unbiased evidence that the raw BOLD signal in these regions corresponds closely to a reward prediction error. We then derive from this signal the learned values of cues that predict rewards of equal mean but different variance and show that these values are indeed modulated by experienced risk. Moreover, a close neurometric–psychometric coupling exists between the fluctuations of the experience-based evaluations of risky options that we measured neurally and the fluctuations in behavioral risk aversion. This suggests that risk sensitivity is integral to human learning, illuminating economic models of choice, neuroscientific models of affective learning, and the workings of the underlying neural mechanisms.

Published
2012

23. Integrated information increases with fitness in the evolution of animats

Author

Nicolas Chaumont, Christoph Adami, Giulio Tononi, Jeffrey A. Edlund, Christof Koch, and Arend Hintze

Subjects
FOS: Computer and information sciences, Biological organism, Genetic Fitness, animal behavior, computer.software_genre, mental function, memory, Cognition, Mental Processes, 0302 clinical medicine, animal, lcsh:QH301-705.5, 0303 health sciences, Behavior, Animal, quantitative analysis, Ecology, Applied Mathematics, article, Information processing, reproductive fitness, Complex Systems, bioinformatics, information science, artificial intelligence, simulation, Biological Evolution, Nonlinear Sciences - Adaptation and Self-Organizing Systems, Computational Theory and Mathematics, Modeling and Simulation, Probability distribution, Neurons and Cognition (q-bio.NC), Adaptation and Self-Organizing Systems (nlin.AO), Research Article, Consciousness, Computer Science - Artificial Intelligence, Cognitive Neuroscience, Decision Making, FOS: Physical sciences, Bioinformatik och systembiologi, Biology, Machine learning, information processing, 03 medical and health sciences, Cellular and Molecular Neuroscience, Animat, Memory, Evolutionary Modeling, evolution, Genetics, Animals, Humans, Entropy (information theory), controlled study, human, Quantitative Biology - Populations and Evolution, Molecular Biology, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, Computational Neuroscience, Behavior, Bioinformatics and Systems Biology, business.industry, Populations and Evolution (q-bio.PE), Computational Biology, prediction, Biological evolution, Artificial Intelligence (cs.AI), lcsh:Biology (General), FOS: Biological sciences, Quantitative Biology - Neurons and Cognition, physiology, Artificial intelligence, business, computer, Mathematics, 030217 neurology & neurosurgery, Neuroscience, Information integration
Abstract

One of the hallmarks of biological organisms is their ability to integrate disparate information sources to optimize their behavior in complex environments. How this capability can be quantified and related to the functional complexity of an organism remains a challenging problem, in particular since organismal functional complexity is not well-defined. We present here several candidate measures that quantify information and integration, and study their dependence on fitness as an artificial agent (“animat”) evolves over thousands of generations to solve a navigation task in a simple, simulated environment. We compare the ability of these measures to predict high fitness with more conventional information-theoretic processing measures. As the animat adapts by increasing its “fit” to the world, information integration and processing increase commensurately along the evolutionary line of descent. We suggest that the correlation of fitness with information integration and with processing measures implies that high fitness requires both information processing as well as integration, but that information integration may be a better measure when the task requires memory. A correlation of measures of information integration (but also information processing) and fitness strongly suggests that these measures reflect the functional complexity of the animat, and that such measures can be used to quantify functional complexity even in the absence of fitness data., Author Summary Intelligent behavior encompasses appropriate navigation in complex environments that is achieved through the integration of sensorial information and memory of past events to create purposeful movement. This behavior is often described as “complex”, but universal ways to quantify such a notion do not exist. Promising candidates for measures of functional complexity are based on information theory, but fail to take into account the important role that memory plays in complex navigation. Here, we study a different information-theoretic measure called “integrated information”, and investigate its ability to reflect the complexity of navigation that uses both sensory data and memory. We suggest that measures based on the integrated-information concept correlate better with fitness than other standard measures when memory evolves as a key element in navigation strategy, but perform as well as more standard information processing measures if the robots navigate using a purely reactive sensor-motor loop. We conclude that the integration of information that emanates from the sensorial data stream with some (short-term) memory of past events is crucial to complex and intelligent behavior and speculate that integrated information–to the extent that it can be measured and computed–might best reflect the complexity of animal behavior, including that of humans.

Published
2011

24. Axel Mobility Platform for Steep Terrain Excursions and Sampling on Planetary Surfaces

Author

Jeffrey A. Edlund, Issa A. D. Nesnas, J.W. Burdick, and Pablo Abad-Manterola

Subjects
Traverse, Impact crater, Payload, Sampling (statistics), Terrain, Mars Exploration Program, Geodesy, Geology, Remote sensing, Sampling device
Abstract

The recent discovery of bright new deposits in two crater gullies on Mars suggests that water still flows in brief spurts on Mars. In this paper, we will present the Axel rover (Figure 1) that was developed to access and sample such deposits on the inside of steep crater walls. Axel is a tethered rover that can be a payload on a lander or a larger rover. The primary features of Axel are its minimal complexity and robustness to the treacherous terrain of sites that are of scientific interest. Using a symmetrical design with three actuators, Axel is capable of operating upside down and right side up, enabling it to descend over crater promontories. With its actuated trailing link, Axel can operate on both flat and sloped terrains. Using a sampling device mounted on the trailing link, Axel can collect and store terrain samples and return to its host platform for detailed scientific sample analysis. We will present our preliminary results that demonstrated Axel's ability to traverse both flat and sloped rocky terrain including 90deg vertical cliffs and collecting soil samples on slopes ranging from 10deg - 40deg in the JPL Mars Yard.

Published
2008

25. THE LIGO GRAVITATIONAL WAVE OBSERVATORIES: RECENT RESULTS AND FUTURE PLANS

Author

Robert Spero, Soumya D. Mohanty, Alessandra Buonanno, N. Zotov, K. Mason, B. Lantz, David Crooks, Sanichiro Yoshida, Graham Woan, E. Rotthoff, Xavier Siemens, M. Malec, M. Rakhmanov, S. Penn, Karsten Kötter, Rana X. Adhikari, Yi Chen, Q. Z. Shu, G. Stapfer, J. Hanson, B. Machenschalk, Guido Mueller, Pamela J. Russell, S. Richman, Oliver Jennrich, J. Betzwieser, H. Overmier, J. H. Romie, B. Sears, Anton B. Ivanov, C. Colacino, M. Schrempel, N. Hindman, D. Farnham, Vicky Kalogera, Carsten Fallnich, J. Mason, T. Regimbau, M. Coles, M. Guenther, Michael D. Smith, R. Amin, K. Bayer, F. J. Raab, R. Gustafson, V. Schmidt, I. Salzman, Patrick Brady, C. Barker-Patton, C. I. Torrie, M. A. Barton, F. Mann, A. Heptonstall, C. Hardham, R. M. S. Schofield, S. Chatterji, Benjamin J. Owen, W. R. Johnston, Alberto Vecchio, K. V. Tokmakov, Seiji Kawamura, Morag M. Casey, Adrian C. Ottewill, Phil Willems, M. Heurs, J. Chapsky, B. J. Winjum, J. Zweizig, Osamu Miyakawa, David H. Reitze, D. Ouimette, Albert Lazzarini, K. Mailand, Christian J. Killow, Peter R. Saulson, V. V. Frolov, R. Taylor, M. Hammond, H. Ding, Krzysztof Belczynski, R. Mittleman, R. Abbott, Nelson Christensen, A. Hartunian, D. M. Strom, J. Kern, Philippe Grandclément, P. J. Sutton, Haisheng Rong, L. Jones, Robert Bennett, S. Brozek, A. Rizzi, Keisuke Goda, Lindon J. Robison, R. L. Savage, Helena Armandula, E. J. Elliffe, Curt Cutler, P. Kloevekorn, D. Rose, M. C. Araya, B. F. Schutz, T. Summerscales, D. Chin, M. M. Fejer, Stanislav Babak, Walid A. Majid, I. Leonor, S. Wen, P. Ehrens, S. Traeger, Peter Fritschel, A. L. Stuver, I. Yakushin, C. Gray, Duncan A. Brown, G. Billingsley, A. Chandler, D. B. Tanner, J. G. Rollins, Kevin M. Ryan, F. Asiri, S. E. Whitcomb, S. Nagano, Timothy Evans, D. Redding, Shinji Miyoki, M. J. Lubinski, A. M. Gretarsson, Chonghoon Kim, T. Delker, D. Sigg, Brent Ware, S. W. Ballmer, C. Aulbert, S. J. Berukoff, G. Traylor, Thomas Corbitt, J. Castiglione, G. Moreno, Akiteru Takamori, Walter Winkler, P. Charlton, A. Gillespie, Harald Lück, J. Logan, R. K. Nayak, A. Wilson, C. Messenger, Vladimir B. Braginsky, K. Riles, R. Rahkola, V. Leonhardt, T. Etzel, Rainer Weiss, D. Debra, O. Matherny, Laura Cadonati, D. Jungwirth, P. Hoang, P. R. Williams, R. W. P. Drever, I. A. Bilenko, Ian Taylor, Robert J. McCarthy, Linqing Wen, David J. Ottaway, Sheila Rowan, B. Barr, J. Worden, Teviet Creighton, Herbert Walther, M. Hrynevych, K. Kawabe, Joseph D. Romano, Yousuke Itoh, W. W. Johnson, C. King, R. Riesen, Roland Schilling, Kasem Mossavi, F. Nocera, Martin Hewitson, B. Bochner, Alicia M. Sintes, Massimo Tinto, H. Tariq, D. Webber, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Black, Gianpietro Cagnoli, Gregory M. Harry, M. Lei, J. R. Smith, R. Bork, J. E. Brau, C. A. Cantley, T. Nash, T. Olson, A. Sazonov, D. Churches, Benjamin William Allen, A. Khan, S. M. Scott, D. Ugolini, Karsten Danzmann, M. C. Sumner, Virginio Sannibale, David E. McClelland, Kenneth A. Strain, M. Lormand, Erika D'Ambrosio, J. Myers, C. Ebeling, J. A. Giaime, G. Mendell, U. Weiland, E. J. Daw, M. Fine, T. T. Lyons, S. Wise, S. Grunewald, C. Parameswariah, N. Hepler, B. Mours, J. Langdale, G. P. Newton, M. Fyffe, Kip S. Thorne, Suvadeep Bose, Richard Ingley, A. J. Weinstein, D. H. Shoemaker, Gabriela Gonzalez, M. Landry, Kenneth G. Libbrecht, D. B. Kozak, M. Hennessy, C. Vorvick, B. O'Reilly, R.L. Coldwell, A. Weidner, V. P. Mitrofanov, L. Bogue, M. R. Smith, P. Schwinberg, A. Grant, S. Liu, Michael E Zucker, L. Zhang, G. H. Sanders, R. Lawrence, W. G. Anderson, Jordan Camp, A. S. Sengupta, Peter Shawhan, M. Tibbits, B. P. Abbott, S. Vass, Peter Aufmuth, W. Kells, D. Busby, R. Davies, William E. Butler, Albrecht Rüdiger, V. Chickarmane, S. Meshkov, R. Beausoleil, Martin P McHugh, M. H. P. M. van Putten, S. Tilav, E. Gustafson, H. Naundorf, M. R. Pratt, Matthew Evans, L. Cardenas, E. Maros, S. Klimenko, Marco Aurelio Diaz, B. Bhawal, V. Parameswariah, C. Torres, N. A. Robertson, A. Bullington, Kevin M. Carter, S. B. Anderson, M. W. Regehr, A. Marin, M. Pedraza, Badri Krishnan, P. Csatorday, Maria Alessandra Papa, M. V. Plissi, Antony C. Searle, Kent Blackburn, Hartmut Grote, B. F. Whiting, Joseph M. Kovalik, M. Barnes, Julien Sylvestre, P. McNamara, L. Wallace, R. Frey, H. Yamamoto, P. J. King, D. Grimmett, Philip Nutzman, A. G. Wiseman, P. E. Lindquist, D. C. Coyne, S. Dhurandar, W. O. Hamilton, D. Barker, Kenneth D. Skeldon, S. Killbourn, S. Roddy, James Whelan, Lee Samuel Finn, Éanna É. Flanagan, Guenakh Mitselmakher, A. Ageev, L. Sievers, C. A. Shapiro, B. Bland-Weaver, Soma Mukherjee, Scott Koranda, L. Matone, J. H. Hough, A. Sibley, Douglas R. Cook, S. Seel, M. Ito, Roy Williams, K. S. Ganezer, K. Watts, Stefan Goßler, K. T. Reilly, Kevin C. Schlaufman, Herbert Welling, Nergis Mavalvala, B. C. Barish, J. Heefner, W. Hua, Michele Vallisneri, Ik Siong Heng, S. Márka, R. J. Dupuis, K. Reithmaier, Andreas Freise, Matthew Pitkin, R. DeSalvo, R. Wooley, Jolien D. E. Creighton, I. Zawischa, E. Katsavounidis, R. L. Byer, H. Radkins, S. P. Vyachanin, W. Tyler, R. Balasubramanian, Jeffrey A. Edlund, R. Burgess, B. J. Cusack, S. R. Rao, D. I. Robertson, Peter H. Sneddon, M. Mageswaran, H. Ward, M. MacInnis, Y. Hefetz, Gerhard Heinzel, Benno Willke, and The LIGO Scientific Collaboration

Subjects
Physics, Gravitational-wave observatory, Einstein Telescope, Gravitational wave, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, Gravitational-wave astronomy, LIGO, General Relativity and Quantum Cosmology, Neutron star, Pulsar, QC
Abstract

The LIGO interferometers are operating as gravitational wave observatories, with a noise level near an order of magnitude of the goal and the first scientific data recently taken. This data has been analyzed for four different categories of gravitational wave sources; millisecond bursts, inspiralling binary neutron stars, periodic waves from a known pulsar, and stochastic background. Research and development is also underway for the next generation LIGO detector, Advanced LIGO.

Published
2006
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26. Search for gravitational waves from binary black hole inspirals in LIGO data

Author

Linqing Wen, T. Etzel, Joseph D. Romano, C. King, Kasem Mossavi, J. E. Brau, W. R. Johnston, Laura Cadonati, K. Kawabe, P. Csatorday, A. Chandler, Kevin M. Ryan, J. Betzwieser, D. Debra, W. Kells, Lindon J. Robison, A. Wilson, A. L. Stuver, J. S. Noel, M. Fyffe, O. Matherny, B. Lantz, Susan M. Scott, Teviet Creighton, Herbert Walther, Y. Hefetz, Gerhard Heinzel, C. Hardham, Helena Armandula, E. J. Elliffe, M. V. Plissi, Roman Schnabel, S. Penn, Karsten Kötter, Pamela J. Russell, S. Richman, B. Barr, H. Ward, Chad Hanna, A. Heptonstall, J. Worden, A. Rüdiger, K. Rawlins, Benno Willke, K. D. Zaleski, Oliver Jennrich, Subhasish Mitra, Marco G. Tarallo, X. Siemens, C. Wilkinson, J. Castiglione, D. Barker, K. A. Thorne, Adrian C. Ottewill, P. Charlton, Michael E Zucker, A. Di Credico, D. Churches, L. Ruet, Hartmut Grote, R. Riesen, D. Webber, B. F. Whiting, John Veitch, S. Roddy, Roland Schilling, M. Fine, E. J. Daw, S. Dhurandhar, Krzysztof Belczynski, R. Mittleman, Nelson Christensen, A. Hartunian, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, D. Ugolini, Carsten Fallnich, Stefan Hild, M. A. Barton, I. A. Bilenko, V. Dergachev, Ian Taylor, David J. Ottaway, Alessandra Buonanno, E. Black, Martin M. Fejer, J. R. Smith, S. Klimenko, T. Nash, V. V. Frolov, M. MacInnis, S. Mukherjee, Sanichiro Yoshida, D. Sellers, A. M. Sintes, P. Aufmuth, Jeffrey A. Edlund, F. Nocera, Lee Samuel Finn, J. W C McNabb, D. Jungwirth, A. Sazonov, Manuel Luna, K. Reithmaier, A. Gillespie, Andreas Freise, A. Libson, Matthew Pitkin, A. Ivanov, M. Mageswaran, R. Wooley, R. Burgess, Daniel C. Woods, N. A. Robertson, Richard J. Abbott, I. Yakushin, P. E. Lindquist, H. Radkins, S. P. Vyachanin, M. Coles, M. Guenther, D. I. Robertson, C. Torres, Graham Woan, A. Rodriguez, Robert L. Byer, K. Y. Franzen, E. Maros, Stuart Reid, Curt Cutler, C. Gray, C. A. Cantley, T. Regimbau, Roy Williams, K. Wette, R. Coldwell, W. Tyler, T. Evans, Carlo Ungarelli, Michael D. Smith, Keisuke Goda, David Jones, Guenakh Mitselmakher, C. I. Torrie, C. Barker, V. Parameshwaraiah, K. S. Ganezer, Patrick Brady, Pankaj Sarin, D. Farnham, Raymond G. Beausoleil, A. Ageev, M. Hammond, C. Messenger, M. Lormand, O. Spjeld, R. Zhu, W. Hua, C. Robinson, Benjamin William Allen, K. Watts, B. Bland, V. Chickarmane, I. Zawischa, D. Sigg, W. W. Johnson, S. W. Ballmer, Stefan Goßler, R. Gustafson, Karsten Danzmann, M. C. Sumner, R. Balasubramanian, M. Rakhmanov, V. Schmidt, D. Chin, Stanislav Babak, Walid A. Majid, Erik Katsavounidis, Phil Willems, Gavin Davies, Duncan A. Brown, Walter Winkler, J. Kern, P. G. Murray, D. Steussy, B. Sears, Kevin M. Carter, J. A. Giaime, S. B. Anderson, Jan Harms, William E. Butler, Peter R. Saulson, M. Ito, Martin P McHugh, B. J. Cusack, Brent Ware, Bernard F. Schutz, Eileen S. Rotthoff, Vladimir B. Braginsky, Kevin C. Schlaufman, J. H. Hough, S. E. Seader, B. Bhawal, David B. Tanner, H. Ding, G. Mendell, M. W. Regehr, Marco Aurelio Diaz, M. Sung, S. Grunewald, K. Riles, M. H. P. M. van Putten, S. Tilav, L. Jones, Rana X. Adhikari, Gareth Jones, L. Sievers, Robert Bennett, Thomas Cokelaer, Peter H. Sneddon, G. Stapfer, Gregory M. Harry, Erika D'Ambrosio, Michele Zanolin, C. A. Shapiro, M. Pedraza, Vicky Kalogera, Robert Spero, Soumya D. Mohanty, Harald Lück, U. Weiland, S. R. Rao, M. Lei, T. Olson, M. Barnes, Julien Sylvestre, D. M. Strom, L. Wallace, S. J. Berukoff, R. Bork, N. Zotov, S. Seel, Lisa M. Goggin, K. Mason, R. Frey, A. Marin, C. Aulbert, Scott Koranda, C. Parameswariah, J. Langdale, Sandra E. Wiley, Gabriela Gonzalez, P. J. King, D. Grimmett, I. Leonor, Philip Nutzman, L. Matone, M. Ashley, D. Coyne, A. M. Gretarsson, D. Cook, A. Khan, J. Mason, Virginio Sannibale, David E. McClelland, G. Moreno, Guido Mueller, Yousuke Itoh, B. Bochner, Maria Alessandra Papa, Kent Blackburn, Herbert Welling, Massimo Tinto, Nergis Mavalvala, B. C. Barish, H. Yamamoto, A. Grant, J. Garofoli, Stephen Fairhurst, A. G. Wiseman, S. Wen, Lindy Blackburn, P. Ehrens, Chunglee Kim, V. Sandberg, Michele Vallisneri, A. Sibley, B. Machenschalk, S. Ray-Majumder, Seiji Kawamura, S. Márka, B. Rivera, Philippe Grandclément, K. T. Reilly, David H. Shoemaker, Shantanu Desai, Ik Siong Heng, F. Asiri, Kip S. Thorne, A. J. Weinstein, W. Wu, R. W.P. Drever, F. Mann, Peter Fritschel, Shinji Miyoki, Kenneth A. Strain, A. Weidner, R. A. Mercer, J. Heefner, B. O'Reilly, Reinhard Prix, V. P. Mitrofanov, P. J. Sutton, Haisheng Rong, K. C. Cannon, M. Lubinski, S. E. Whitcomb, M. C. Araya, B. Johnson, W. O. Hamilton, C. N. Colacino, K. Mailand, J. Chapsky, J. Hanson, Osamu Miyakawa, David H. Reitze, S. Killbourn, H. Overmier, James Whelan, Juri Agresti, A. Rizzi, G. Traylor, P. Ajith, L. Zhang, Thomas Corbitt, Christian J. Killow, Akiteru Takamori, Badri Krishnan, Antony C. Searle, T. Findley, S. Liu, D. Ouimette, Yi Chen, J. Cannizzo, J. Allen, D. Kozak, N. Hepler, M. Hennessy, Q. Z. Shu, R. L. Ward, M. Hrynevych, A. Bunkowski, T. Summerscales, Frank Seifert, Joseph M. Kovalik, S. Wise, E. Messaritaki, Sheila Rowan, J. H. Romie, K. Bayer, Michael Landry, S. Meshkov, Kenneth G. Libbrecht, F. J. Raab, S. Chelkowski, R. McCarthy, G. Billingsley, C. Vorvick, P. Schwinberg, J. D. E. Creighton, I. Salzman, R. Amin, W. G. Anderson, Peter Shawhan, M. Tibbits, B. P. Abbott, R. M. S. Schofield, S. Vass, J. Zweizig, Benjamin J. Owen, E. Myers, K. V. Tokmakov, D. Busby, Junwei Cao, R. L. Savage, S. Nagano, D. Redding, M. Malec, P. Hoang, Eugeniy E. Mikhailov, Alberto Vecchio, A. Lazzarini, Richard J. K. Taylor, Gianpietro Cagnoli, J. Myers, Shourov Chatterji, Suvadeep Bose, M. R. Smith, G. H. Sanders, R. Lawrence, M. Hewitson, Morag M. Casey, M. Heurs, B. J. Winjum, A. C. Melissinos, David Crooks, A. Bullington, L. Bogue, D. Rose, R. Desalvo, V. Re, Rainer Weiss, N. Hindman, J. G. Rollins, Jordan Camp, T. Delker, P. R. Williams, J. Dalrymple, A. S. Sengupta, H. Tariq, G. Newton, Matthew Evans, L. Cardenas, Vuk Mandic, Yi Pan, Eric K. Gustafson, T. T. Lyons, J. Logan, R. K. Nayak, R. Rahkola, R. J. Dupuis, and The LIGO Scientific Collaboration

Subjects
Physics, Nuclear and High Energy Physics, Gravitational-wave observatory, 010308 nuclear & particles physics, Gravitational wave, FOS: Physical sciences, Binary number, Astronomy, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, 01 natural sciences, Cosmology, LIGO, General Relativity and Quantum Cosmology, filters, Interferometry, Binary black hole, 0103 physical sciences, Astronomical interferometer, ddc:530, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, FILTERS, 010303 astronomy & astrophysics, QC
Abstract

We report on a search for gravitational waves from binary black hole inspirals in the data from the second science run of the LIGO interferometers. The search focused on binary systems with component masses between 3 and 20 solar masses. Optimally oriented binaries with distances up to 1 Mpc could be detected with efficiency of at least 90%. We found no events that could be identified as gravitational waves in the 385.6 hours of data that we searched., 18 pages, 8 figures

Published
2006

27. Joint LIGO and TAMA300 Search for Gravitational Waves from Inspiralling Neutron Star Binaries

Author

J. E. Brau, Subhasish Mitra, D. Churches, A. J. Weinstein, W. Wu, P. T. Beyersdorf, A. Grant, S. Liu, L. Zhang, Keisuke Goda, Erik Katsavounidis, Daisuke Tatsumi, A. Wilson, M. J. Lubinski, Vladimir B. Braginsky, K. Riles, Yousuke Itoh, Ken-ichi Nakao, A. Ageev, M. Lormand, M. Fine, K. Rawlins, A. Bunkowski, Kazuyuki Miura, J. Logan, R. K. Nayak, Rebecca Abbott, J. Heefner, Mayu Katsuki, David H. Shoemaker, R. Rahkola, Y. Hefetz, Shigemi Otsuka, Peter Fritschel, Gerhard Heinzel, C. Hardham, Hideki Ishitsuka, Hideki Asada, Jan Harms, Alberto Vecchio, Juri Agresti, A. Rizzi, S. Penn, Benno Willke, L. Ruet, Kazuaki Kuroda, Robert J. McCarthy, Linqing Wen, Pamela J. Russell, S. Richman, K. C. Cannon, A. Bullington, F. Mann, Shuichi Sato, Masaru Shibata, A. Gillespie, Oliver Jennrich, Akitoshi Ueda, L. Bogue, R. L. Savage, V. V. Frolov, Curt Cutler, Alessandra Buonanno, V. Parameshwaraiah, I. Leonor, John K. Cannizzo, T. Summerscales, S. Nagano, Yusaku Hamuro, Darby Kozak, K. A. Thorne, J. Betzwieser, M. C. Araya, D. Ugolini, Mitsuru Musha, Y. Saito, Carsten Fallnich, Yoshikazu Karasawa, R. J. Dupuis, Kiminori Kondo, C. Torres, A. Rodriguez, C. Barker, B. Johnson, Naoki Seto, D. Redding, Youhei Sato, Joseph D. Romano, C. King, Stefan Hild, N. Sato, C. A. Cantley, C. Robinson, Benjamin William Allen, Karsten Danzmann, M. C. Sumner, Shoken M. Miyama, D. Chin, Stanislav Babak, Kasem Mossavi, Walid A. Majid, Duncan A. Brown, P. Hoang, G. Traylor, Thomas Corbitt, Michael Landry, G. Billingsley, Michele Vallisneri, Ik Siong Heng, Fumiko Kawazoe, H. Tariq, Shigenori Moriwaki, J. Chapsky, S. Meshkov, Akiteru Takamori, Pankaj Sarin, D. Farnham, Akito Araya, E. J. Daw, Brent Ware, Y. Ogawa, Norikatsu Mio, G. Mendell, Soma Mukherjee, Sanichiro Yoshida, M. R. Smith, Shinji Miyoki, Graham Woan, Zong Hong Zhu, Robert L. Byer, Stuart Reid, Shihori Sakata, A. M. Gretarsson, D. Rose, C. A. Shapiro, V. Schmidt, Toru Tanji, T. Nakamura, E. Rotthoff, P. Csatorday, William E. Butler, Eugeniy E. Mikhailov, T. Findley, E. Messaritaki, Morag M. Casey, M. Heurs, D. Ouimette, C. Gray, Erika D'Ambrosio, A. Chandler, B. J. Winjum, C. Parameswariah, M. Rakhmanov, Vuk Mandic, Bernard F. Schutz, H. Yamamoto, Takaharu Kaneyama, J. W C McNabb, Laura Cadonati, Walter Winkler, Sheila Rowan, Harald Lück, G. Stapfer, Kevin M. Ryan, J. Hanson, Yoshitaka Nagayama, J. Langdale, G. P. Newton, M. Fyffe, N. A. Robertson, Ken-ichi Ueda, Sandra E. Wiley, Gabriela Gonzalez, Ken'ichi Nakagawa, Martin P McHugh, V. Re, Susan M. Scott, G. H. Sanders, R. Lawrence, M. H. P. M. van Putten, Koichi Waseda, C. Aulbert, S. Tilav, Guido Mueller, Rana X. Adhikari, Gareth Jones, H. Overmier, Roy Williams, J. A. Giaime, Katsuaki Kasahara, Eric K. Gustafson, Hideo Iguchi, Kentaro Somiya, Kenji Soida, B. Machenschalk, P. R. Williams, Takashi Kuwabara, Richard J. K. Taylor, S. Wise, D. Sellers, Teviet Creighton, S. Grunewald, Herbert Walther, Chad Hanna, K. Kötter, C. Wilkinson, Gianpietro Cagnoli, Toshikazu Suzuki, Rainer Weiss, T. Etzel, A. C. Melissinos, K. Oohara, T. T. Lyons, E. Maros, M. V. Plissi, M. Kawamura, Shantanu Desai, Kip S. Thorne, B. Lantz, K. S. Ganezer, Kouichi Sato, Albert Lazzarini, M. Coles, M. Guenther, Tomiyoshi Haruyama, R. W. P. Drever, Kenji Numata, Masaki Ando, K. Watts, Kenneth G. Libbrecht, I. Salzman, Stefan Goßler, Michael D. Smith, Marco G. Tarallo, K. T. Reilly, W. W. Johnson, J. Myers, F. Nocera, J. Allen, N. Hepler, Ryuichi Fujita, W. O. Hamilton, Scott Koranda, D. Webber, V. P. Mitrofanov, R. M. S. Schofield, C. Vorvick, A. Marin, Yoshio Nishi, Shuzo Takemoto, B. Bochner, Akira Okutomi, Hideaki Kudoh, Benjamin J. Owen, P. Schwinberg, V. Quetschke, Shourov Chatterji, W. R. Johnston, Yoshihide Kozai, Bangalore Suryanarayana Sathyaprakash, E. Black, Norihiko Kamikubota, Patrick Brady, Suvadeep Bose, Takayuki Tomaru, Masatake Ohashi, Kevin C. Schlaufman, E. Myers, K. V. Tokmakov, S. Killbourn, Carlo Ungarelli, Martin M. Fejer, Hideyuki Tagoshi, J. R. Smith, R. Bork, T. Regimbau, Toshifumi Futamase, C. I. Torrie, Herbert Welling, A. Heptonstall, M. Malec, T. Nash, W. G. Anderson, Peter Shawhan, M. Tibbits, B. P. Abbott, A. Sazonov, Seiji Kawamura, Nobuyuki Kanda, Hartmut Grote, James Whelan, P. Ajith, L. Matone, Yukiyoshi Iida, Martin Hewitson, Massimo Tinto, Nergis Mavalvala, J. G. Rollins, Junwei Cao, Reinhard Prix, Naoko Ohishi, B. C. Barish, K. D. Zaleski, Phil Willems, M. Hrynevych, R. DeSalvo, S. Vass, W. Kells, P. Ehrens, D. Busby, D. M. Strom, Masa-Katsu Fujimoto, Kevin M. Carter, T. Delker, P. G. Murray, Osamu Miyakawa, David H. Reitze, Christian J. Killow, S. B. Anderson, Hiroyuki Nakano, Misao Sasaki, Jordan Camp, A. Sibley, J. Dalrymple, Masao Tokunari, Lindon J. Robison, A. S. Sengupta, J. H. Hough, D. Jungwirth, Philippe Grandclément, P. E. Lindquist, K. Wette, Peter Aufmuth, David B. Tanner, M. W. Regehr, Lisa M. Goggin, Douglas R. Cook, M. Sung, P. J. Sutton, Haisheng Rong, Timothy Evans, Helena Armandula, E. J. Elliffe, Kazuhiro Hayama, M. Pedraza, Michele Zanolin, S. Seel, R. Coldwell, Jeffrey A. Edlund, M. A. Barton, D. Sigg, Keiko Kokeyama, Gavin Davies, D. Steussy, Koji Arai, R. Burgess, Maria Alessandra Papa, V. Chickarmane, Daniel C. Woods, B. Sears, Kimio Tsubono, T. Akutsu, S. W. Ballmer, Kent Blackburn, S. Wen, D. I. Robertson, Vicky Kalogera, Souichi Telada, J. Mason, B. Bhawal, D.B. DeBra, S. J. Berukoff, K. Y. Franzen, M. Hammond, J. Kern, Hisa-aki Shinkai, L. Jones, Robert Bennett, A. Yamamoto, Matthew Evans, L. Cardenas, Yi Pan, S. Klimenko, Ryutaro Takahashi, Y. Tsunesada, G. Moreno, Robert Spero, Soumya D. Mohanty, David Crooks, N. Zotov, K. Mason, Sanjeev Dhurandhar, S. Ray-Majumder, Xavier Siemens, C. N. Colacino, Yi Chen, M. Hennessy, Q. Z. Shu, R. L. Ward, M. Ito, J. H. Romie, K. Bayer, F. J. Raab, R. Gustafson, S. Márka, Takakazu Shintomi, J. Zweizig, Kohei Takeno, B. Bland, U. Weiland, Takahiro Tanaka, Kenneth A. Strain, S. E. Seader, A. Weidner, R. A. Mercer, Michael E Zucker, Stephen Fairhurst, Tatsuru Yoshida, A. L. Stuver, O. Matherny, Manuel Luna, B. O'Reilly, J. S. Noel, B. Barr, Hiromi Mizusawa, J. Worden, A. Rüdiger, Namio Matsuda, J. Castiglione, Youhei Fujiki, P. Charlton, R. Riesen, A. Di Credico, Roland Schilling, I. A. Bilenko, V. Dergachev, Ian Taylor, David J. Ottaway, Marco Aurelio Diaz, Nobuhiro Tsuda, David Jones, Peter R. Saulson, Taketoshi Kasai, F. Asiri, Badri Krishnan, H. Ding, Takashi Uchiyama, Antony C. Searle, Kunihito Ioka, Frank Seifert, B. F. Whiting, Joseph M. Kovalik, S. E. Whitcomb, I. Yakushin, Hirotaka Takahashi, Keisuke Taniguchi, B. J. Cusack, Guenakh Mitselmakher, S. R. Rao, O. Spjeld, R. Zhu, Toshitaka Yamazaki, M. Ashley, Mitsuhiro Fukushima, L. Sievers, Jolien D. E. Creighton, Thomas Cokelaer, Lindy Blackburn, Yuriko Yanagi, Chunglee Kim, V. Sandberg, D. Barker, A. Ivanov, H. Radkins, S. P. Vyachanin, S. Chelkowski, W. Tyler, S. Roddy, Raymond G. Beausoleil, R. Balasubramanian, A. M. Sintes, Lee Samuel Finn, M. Barnes, Julien Sylvestre, Yoichi Aso, L. Wallace, R. Frey, P. J. King, D. Grimmett, Philip Nutzman, A. G. Wiseman, D. C. Coyne, K. Reithmaier, Andreas Freise, A. Libson, Matthew Pitkin, R. Wooley, I. Zawischa, Peter H. Sneddon, Yasufumi Kojima, J. Garofoli, K. Kawabe, B. Rivera, M. Mageswaran, H. Ward, John Veitch, Jun'ichi Yokoyama, M. MacInnis, R. S. Amin, Kazuhiro Yamamoto, N. Hindman, Gregory M. Harry, M. Lei, T. Olson, A. Khan, Virginio Sannibale, David E. McClelland, C. Messenger, W. Hua, Aya Sekido, Adrian C. Ottewill, K. Mailand, Krzysztof Belczynski, R. Mittleman, Nelson Christensen, A. Hartunian, Roman Schnabel, The LIGO Scientific Collaboration, and TAMA Collaboration

Subjects
Nuclear and High Energy Physics, templates, Milky Way, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, 01 natural sciences, coalescence rates, neutron stars, Cosmology, General Relativity and Quantum Cosmology, binary stars, gravitational wave detectors, 0103 physical sciences, Binary star, ddc:530, compact binaries, 010306 general physics, QC, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Gravitational wave, Astronomy, LIGO, Galaxy, Neutron star, Stars, gravitational waves, light interferometry, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
Abstract

We search for coincident gravitational wave signals from inspiralling neutron star binaries using LIGO and TAMA300 data taken during early 2003. Using a simple trigger exchange method, we perform an inter-collaboration coincidence search during times when TAMA300 and only one of the LIGO sites were operational. We find no evidence of any gravitational wave signals. We place an observational upper limit on the rate of binary neutron star coalescence with component masses between 1 and 3 M_sun of 49 per year per Milky Way equivalent galaxy at a 90% confidence level. The methods developed during this search will find application in future network inspiral analyses., 9 pages, 5 figures. Updated with published version

Published
2005

28. Search for gravitational waves from primordial black hole binary coalescences in the galactic halo

Author

Laura Cadonati, B. F. Whiting, P. G. Murray, D. Rose, H. Overmier, Susan M. Scott, Teviet Creighton, Herbert Walther, J. H. Hough, X. Siemens, K. Kötter, C. Wilkinson, M. Coles, M. Guenther, A. Rizzi, V. Re, J. Heefner, Douglas R. Cook, L. Jones, Roman Schnabel, J. E. Brau, B. Bland, U. Weiland, Michele Zanolin, Patrick Brady, S. Seel, Rainer Weiss, R. W. P. Drever, O. Matherny, S. E. Seader, F. Nocera, B. Barr, J. Worden, A. Rüdiger, R. Riesen, D. Churches, Roland Schilling, Richard J. K. Taylor, Gianpietro Cagnoli, T. Summerscales, M. A. Barton, W. W. Johnson, C. A. Shapiro, Stephen Fairhurst, J. H. Romie, K. Bayer, F. J. Raab, F. Asiri, S. E. Whitcomb, Michael Landry, T. Findley, D. Ouimette, A. M. Gretarsson, Philippe Grandclément, P. J. Sutton, Haisheng Rong, Michele Vallisneri, R. Gustafson, D.B. DeBra, K. Rawlins, A. Bunkowski, T. Regimbau, A. Wilson, H. Ward, C. I. Torrie, A. Heptonstall, M. Malec, D. Steussy, B. Sears, K. Y. Franzen, Jordan Camp, Ik Siong Heng, Vicky Kalogera, E. Messaritaki, G. Billingsley, M. Hammond, J. Myers, Phil Willems, M. W.E. Smith, J. Kern, A. S. Sengupta, Y. Hefetz, G. Mendell, Scott Koranda, L. Matone, S. Wise, S. Chatterji, Sheila Rowan, R. J. Dupuis, Suvadeep Bose, D. M. Strom, S. Grunewald, B. Lantz, John Veitch, Gerhard Heinzel, C. Hardham, Benno Willke, A. Sibley, Richard S. Savage, J. Mason, J. Zweizig, K. D. Zaleski, David Jones, R. DeSalvo, N. A. Robertson, Kenneth G. Libbrecht, I. Salzman, D. B. Kozak, C. Vorvick, Seiji Kawamura, Reinhard Prix, A. J. Weinstein, W. Wu, Matthew Evans, L. Cardenas, A. Gillespie, C. Parameswariah, R. M. S. Schofield, Alberto Vecchio, Yi Pan, M. MacInnis, Osamu Miyakawa, C. A. Cantley, David H. Reitze, Benjamin J. Owen, Peter R. Saulson, Shinji Miyoki, Christian J. Killow, K. Reithmaier, Andreas Freise, A. Libson, Matthew Pitkin, Alessandra Buonanno, Benjamin William Allen, S. Klimenko, R. Abbott, J. Langdale, G. P. Newton, M. Fyffe, W. G. Anderson, K. V. Tokmakov, S. Penn, Robert Spero, Soumya D. Mohanty, A. Ageev, C. Aulbert, Peter Shawhan, M. Tibbits, B. P. Abbott, Sandra E. Wiley, Gabriela Gonzalez, H. Tariq, Pamela J. Russell, S. Richman, Oliver Jennrich, Karsten Danzmann, M. C. Sumner, M. Lormand, M. Fine, S. Vass, Martin Hewitson, R. Wooley, N. Zotov, K. Mason, Jan Harms, A. Grant, S. Liu, K. A. Thorne, J. Betzwieser, Peter Fritschel, D. Ugolini, Carsten Fallnich, Jeffrey A. Edlund, Sanichiro Yoshida, W. Kells, D. Busby, Carlo Ungarelli, J. S. Noel, M. Ito, Graham Woan, Sanjeev Dhurandhar, S. Ray-Majumder, Robert L. Byer, Stuart Reid, Stefan Hild, R. Burgess, A. Bullington, Daniel C. Woods, Erika D'Ambrosio, S. Nagano, C. Torres, Soma Mukherjee, M. Rakhmanov, C. N. Colacino, Bernard F. Schutz, D. Redding, Keisuke Goda, M. R. Smith, M. Hrynevych, L. Bogue, D. I. Robertson, G. Stapfer, V. V. Frolov, J. Castiglione, P. Hoang, C. Barker, I. Zawischa, J. Hanson, Guido Mueller, P. Charlton, Erik Katsavounidis, I. Leonor, V. Parameshwaraiah, A. Di Credico, Yi Chen, H. Yamamoto, M. Hennessy, Q. Z. Shu, Roy Williams, M. J. Lubinski, S. Meshkov, G. Traylor, Thomas Corbitt, Akiteru Takamori, D. Barker, Walter Winkler, Harald Lück, Kip S. Thorne, D. Chin, I. A. Bilenko, V. Dergachev, Ian Taylor, David J. Ottaway, S. Wen, D. Farnham, E. J. Daw, Stanislav Babak, Walid A. Majid, K. S. Ganezer, K. Watts, Vladimir B. Braginsky, Curt Cutler, G. H. Sanders, R. Lawrence, K. Riles, Duncan A. Brown, Stefan Goßler, V. Schmidt, S. Chelkowski, David H. Shoemaker, V. P. Mitrofanov, N. Hepler, K. T. Reilly, R. Bennett, William E. Butler, R. Amin, Brent Ware, M. C. Araya, W. O. Hamilton, A. Marin, Yousuke Itoh, F. Mann, Kevin C. Schlaufman, T. Etzel, Herbert Welling, Nergis Mavalvala, P. Ehrens, J. W C McNabb, B. Bochner, A. Stuver, S. Roddy, Martin P McHugh, M. H. P. M. van Putten, S. Killbourn, S. Tilav, B. C. Barish, Massimo Tinto, E. Rotthoff, Kevin M. Carter, B. Johnson, James Whelan, S. B. Anderson, P. Schwinberg, J. Chapsky, D. Webber, E. Maros, H. Ding, L. Zhang, Rana X. Adhikari, B. Machenschalk, V. Quetschke, David B. Tanner, Bangalore Suryanarayana Sathyaprakash, E. Black, M. W. Regehr, Martin M. Fejer, J. R. Smith, R. Bork, T. Nash, C. Gray, Peter H. Sneddon, A. Sazonov, M. Pedraza, Maria Alessandra Papa, Kent Blackburn, A. M. Sintes, J. Garofoli, Lee Samuel Finn, Robert J. McCarthy, K. Kawabe, B. Rivera, I. Yakushin, Linqing Wen, M. Mageswaran, Guenakh Mitselmakher, J. A. Giaime, Eric K. Gustafson, R. Zhu, L. Sievers, Thomas Cokelaer, M. Barnes, Julien Sylvestre, Timothy Evans, T. T. Lyons, L. Wallace, R. Frey, P. J. King, D. Grimmett, Philip Nutzman, A. G. Wiseman, R. Coldwell, D. C. Coyne, Albert Lazzarini, D. Sigg, S. W. Ballmer, Joseph D. Romano, C. King, G. Moreno, Kasem Mossavi, J. G. Rollins, A. Ivanov, W. R. Johnston, David Crooks, P. Csatorday, T. Delker, P. R. Williams, J. Logan, R. K. Nayak, M. V. Plissi, R. Rahkola, Lindon J. Robison, H. Radkins, Michael E Zucker, Helena Armandula, E. J. Elliffe, Hartmut Grote, A. Chandler, S. P. Vyachanin, Kevin M. Ryan, W. Tyler, D. Jungwirth, N. Hindman, P. E. Lindquist, Peter Aufmuth, Marco Aurelio Diaz, A. Parameswaran, V. Chickarmane, Raymond G. Beausoleil, B. Bhawal, R. Balasubramanian, S. J. Berukoff, Badri Krishnan, S. Márka, Antony C. Searle, Kenneth A. Strain, A. Weidner, R. A. Mercer, B. O'Reilly, Frank Seifert, Joseph M. Kovalik, C. Messenger, Morag M. Casey, M. Heurs, B. J. Winjum, W. Hua, B. J. Cusack, S. R. Rao, M. Ashley, Gregory M. Harry, M. Lei, T. Olson, Jolien D. E. Creighton, Lindy Blackburn, Chunglee Kim, A. Khan, V. Sandberg, Virginio Sannibale, David E. McClelland, Adrian C. Ottewill, K. Mailand, Krzysztof Belczynski, R. Mittleman, Nelson Christensen, A. Hartunian, and The LIGO Scientific Collaboration

Subjects
Nuclear and High Energy Physics, MACHO PROJECT, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Primordial black hole, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, General Relativity and Quantum Cosmology, Galactic halo, Binary black hole, 0103 physical sciences, 10. No inequality, 010303 astronomy & astrophysics, QC, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Gravitational wave, Astronomy, LIGO, Black hole, Intermediate-mass black hole, Stellar black hole
Abstract

We use data from the second science run of the LIGO gravitational-wave detectors to search for the gravitational waves from primordial black hole (PBH) binary coalescence with component masses in the range 0.2--$1.0 M_\odot$. The analysis requires a signal to be found in the data from both LIGO observatories, according to a set of coincidence criteria. No inspiral signals were found. Assuming a spherical halo with core radius 5 kpc extending to 50 kpc containing non-spinning black holes with masses in the range 0.2--$1.0 M_\odot$, we place an observational upper limit on the rate of PBH coalescence of 63 per year per Milky Way halo (MWH) with 90% confidence., Comment: 7 pages, 4 figures, to be submitted to Phys. Rev. D

Published
2005

29. Search for gravitational waves from galactic and extra-galactic binary neutron stars

Author

Sanichiro Yoshida, B. F. Whiting, Graham Woan, Robert L. Byer, E. Maros, Stuart Reid, M. Rakhmanov, U. Weiland, E. J. Daw, C. Parameswariah, M. Coles, M. Guenther, Bernard F. Schutz, G. Stapfer, J. Langdale, Sandra E. Wiley, Michael D. Smith, Gabriela Gonzalez, Guido Mueller, J. W C McNabb, David Jones, Patrick Brady, A. Wilson, K. D. Zaleski, Roman Schnabel, D. Churches, Peter R. Saulson, D. Steussy, B. Sears, H. Yamamoto, N. A. Robertson, H. Ding, Vicky Kalogera, A. Rizzi, J. Mason, Alberto Vecchio, J. E. Brau, W. R. Johnston, F. Asiri, S. E. Whitcomb, C. Gray, M. Ito, P. Schwinberg, D. Webber, Carlo Ungarelli, Seiji Kawamura, Reinhard Prix, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Black, Martin M. Fejer, A. Gillespie, J. S. Noel, T. Summerscales, J. R. Smith, S. Klimenko, T. Nash, C. A. Shapiro, Osamu Miyakawa, David H. Reitze, J. Hanson, Y. Hefetz, Gerhard Heinzel, C. Hardham, A. Sazonov, Lindon J. Robison, Benno Willke, Christian J. Killow, D. Rose, R. Desalvo, D. Kozak, W. O. Hamilton, Philippe Grandclément, P. J. Sutton, Kevin M. Carter, Haisheng Rong, C. Aulbert, Scott Koranda, L. Matone, C. A. Cantley, S. Killbourn, J. Castiglione, H. Overmier, P. Charlton, Michael Landry, Helena Armandula, E. J. Elliffe, Benjamin William Allen, R. McCarthy, Karsten Danzmann, M. C. Sumner, A. Ivanov, A. Di Credico, S. B. Anderson, David B. Tanner, James Whelan, L. Zhang, Alessandra Buonanno, Curt Cutler, G. Mendell, M. W. Regehr, V. Re, J. H. Romie, K. Bayer, I. A. Bilenko, S. Nagano, V. Dergachev, Ian Taylor, David J. Ottaway, F. J. Raab, V. Parameshwaraiah, G. Billingsley, H. Radkins, Linqing Wen, S. P. Vyachanin, O. Matherny, M. Pedraza, W. Tyler, B. Lantz, Rainer Weiss, A. Sibley, Maria Alessandra Papa, B. Barr, Shinji Miyoki, S. Chatterji, D. Chin, Peter Fritschel, P. G. Murray, J. Worden, J. A. Giaime, Stanislav Babak, Walid A. Majid, Erika D'Ambrosio, T. Etzel, A. Rüdiger, Duncan A. Brown, D. Redding, M. Malec, P. Hoang, S. Penn, J. H. Hough, Kent Blackburn, Karsten Kötter, Jordan Camp, Pamela J. Russell, S. Richman, Raymond G. Beausoleil, J. D. E. Creighton, I. Salzman, Joseph D. Romano, C. King, R. Balasubramanian, Oliver Jennrich, R. Riesen, J. Zweizig, L. Jones, Michele Zanolin, M. Hrynevych, S. Seel, Roland Schilling, Kasem Mossavi, R. Amin, R. M. S. Schofield, Brent Ware, M. Lubinski, A. S. Sengupta, E. Rotthoff, G. Newton, M. Ashley, K. A. Thorne, M. R. Smith, D. Ugolini, Carsten Fallnich, Stefan Hild, K. Mailand, Kip S. Thorne, R. W.P. Drever, Richard J. Abbott, Benjamin J. Owen, Rana X. Adhikari, Robert Spero, Soumya D. Mohanty, Matthew Evans, L. Cardenas, T. Findley, K. V. Tokmakov, D. Debra, N. Zotov, A. Chandler, D. Coyne, B. Bland, A. M. Gretarsson, V. P. Mitrofanov, M. C. Araya, K. Mason, T. Evans, Yi Pan, Kevin M. Ryan, B. Machenschalk, S. Ray-Majumder, S. E. Seader, A. Heptonstall, D. Cook, D. Ouimette, G. H. Sanders, R. Lawrence, M. Fine, Walter Winkler, Harald Lück, C. N. Colacino, J. Betzwieser, Lindy Blackburn, P. Ehrens, Stephen Fairhurst, A. Lazzarini, Richard J. K. Taylor, Gianpietro Cagnoli, Yi Chen, A. Bullington, M. Hennessy, Q. Z. Shu, L. Bogue, M. A. Barton, Chunglee Kim, G. Traylor, Thomas Corbitt, S. Wise, J. Myers, A. Marin, Akiteru Takamori, V. Sandberg, Suvadeep Bose, K. Y. Franzen, M. Hammond, B. Bochner, E. Messaritaki, Massimo Tinto, Sheila Rowan, S. Meshkov, Kenneth G. Libbrecht, S. Chelkowski, J. Kern, Robert Bennett, Laura Cadonati, K. Kawabe, C. Vorvick, W. Kells, B. J. Cusack, W. G. Anderson, Peter Shawhan, M. Tibbits, B. P. Abbott, T. T. Lyons, S. Vass, Susan M. Scott, Teviet Creighton, Herbert Walther, D. Busby, N. Hepler, X. Siemens, C. Wilkinson, S. R. Rao, A. Bunkowski, A. Ageev, F. Nocera, Jan Harms, G. Moreno, T. Regimbau, C. I. Torrie, Phil Willems, D. M. Strom, A. J. Weinstein, W. Wu, S. Liu, Keisuke Goda, Erik Katsavounidis, Adrian C. Ottewill, Vladimir B. Braginsky, K. Riles, Yousuke Itoh, Krzysztof Belczynski, David Crooks, R. Mittleman, Nelson Christensen, A. Hartunian, N. Hindman, S. Mukherjee, R. Coldwell, D. Sigg, W. W. Johnson, S. W. Ballmer, M. Hewitson, Morag M. Casey, M. Heurs, B. J. Winjum, I. Yakushin, C. Messenger, Guenakh Mitselmakher, M. Lormand, R. Zhu, L. Sievers, W. Hua, Thomas Cokelaer, D. Barker, S. Roddy, Gregory M. Harry, M. Lei, T. Olson, A. M. Sintes, A. Khan, P. Aufmuth, Lee Samuel Finn, Virginio Sannibale, David E. McClelland, M. Barnes, Julien Sylvestre, L. Wallace, R. Frey, P. J. King, D. Grimmett, I. Leonor, Philip Nutzman, A. G. Wiseman, S. Grunewald, J. Logan, R. K. Nayak, R. Rahkola, S. Wen, David H. Shoemaker, K. Reithmaier, F. Mann, J. Heefner, A. Stuver, Andreas Freise, A. Libson, Matthew Pitkin, B. Johnson, J. Chapsky, J. G. Rollins, S. Dhurandhar, M. Mageswaran, R. Wooley, T. Delker, P. R. Williams, H. Tariq, Eric K. Gustafson, I. Zawischa, Badri Krishnan, Antony C. Searle, V. Chickarmane, Frank Seifert, Joseph M. Kovalik, H. Ward, B. Bhawal, Michael E Zucker, S. J. Berukoff, R. Bork, John Veitch, Marco Aurelio Diaz, P. Csatorday, V. V. Frolov, M. MacInnis, A. Parameswaran, M. Fyffe, M. V. Plissi, Peter H. Sneddon, J. Garofoli, Hartmut Grote, K. Rawlins, D. Jungwirth, P. E. Lindquist, S. Márka, Kenneth A. Strain, A. Weidner, R. A. Mercer, C. Torres, B. O'Reilly, C. Barker, B. Rivera, D. Farnham, V. Schmidt, William E. Butler, Martin P McHugh, M. H. P. M. van Putten, S. Tilav, Richard L. Savage, Jeffrey A. Edlund, R. Burgess, Daniel C. Woods, D. I. Robertson, Roy Williams, K. S. Ganezer, K. Watts, Stefan Goßler, R. Gustafson, K. T. Reilly, Kevin C. Schlaufman, Herbert Welling, Nergis Mavalvala, B. C. Barish, A. Grant, Michele Vallisneri, Ik Siong Heng, R. J. Dupuis, and The LIGO Scientific Collaboration

Subjects
Nuclear and High Energy Physics, templates, Andromeda Galaxy, Milky Way, X-ray binary, FOS: Physical sciences, rates, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, FORMS, 01 natural sciences, General Relativity and Quantum Cosmology, EVENTS, SYSTEMS, 0103 physical sciences, Binary star, DETECTORS, ddc:530, TEMPLATES, RATES, LIGO, 010303 astronomy & astrophysics, QC, Astrophysics::Galaxy Astrophysics, detectors, Physics, inspiraling compact binaries, 010308 nuclear & particles physics, Gravitational wave, Astronomy, Local Group, ligo, PULSARS, Galaxy, pulsars, INSPIRALING COMPACT BINARIES, systems, forms, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, events
Abstract

We use 373 hours ($\approx$ 15 days) of data from the second science run of the LIGO gravitational-wave detectors to search for signals from binary neutron star coalescences within a maximum distance of about 1.5 Mpc, a volume of space which includes the Andromeda Galaxy and other galaxies of the Local Group of galaxies. This analysis requires a signal to be found in data from detectors at the two LIGO sites, according to a set of coincidence criteria. The background (accidental coincidence rate) is determined from the data and is used to judge the significance of event candidates. No inspiral gravitational wave events were identified in our search. Using a population model which includes the Local Group, we establish an upper limit of less than 47 inspiral events per year per Milky Way equivalent galaxy with 90% confidence for non-spinning binary neutron star systems with component masses between 1 and 3 $M_\odot$., 20 pages, 12 figures, to be submitted to Phys. Rev. D

Published
2005
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30. White-dwarf–white-dwarf galactic background in the LISA data

Author

Andrzej Królak, Jeffrey A. Edlund, Massimo Tinto, and Gijs Nelemans

Subjects
Physics, Nuclear and High Energy Physics, education.field_of_study, Gravitational wave, Cyclostationary process, Population, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, White dwarf, Astronomy, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, Galactic plane, General Relativity and Quantum Cosmology, Galaxy, Physics::Space Physics, Binary star, education, Noise (radio)
Abstract

LISA (Laser Interferometer Space Antenna) is a proposed space mission, which will use coherent laser beams exchanged between three remote spacecraft to detect and study low-frequency cosmic gravitational radiation. In the low-part of its frequency band, the LISA strain sensitivity will be dominated by the incoherent superposition of hundreds of millions of gravitational wave signals radiated by inspiraling white-dwarf binaries present in our own galaxy. In order to estimate the magnitude of the LISA response to this background, we have simulated a synthesized population that recently appeared in the literature. We find the amplitude of the galactic white-dwarf binary background in the LISA data to be modulated in time, reaching a minimum equal to about twice that of the LISA noise for a period of about two months around the time when the Sun-LISA direction is roughly oriented towards the Autumn equinox. Since the galactic white-dwarfs background will be observed by LISA not as a stationary but rather as a cyclostationary random process with a period of one year, we summarize the theory of cyclostationary random processes, present the corresponding generalized spectral method needed to characterize such process, and make a comparison between our analytic results and those obtained by applying our method to the simulated data. We find that, by measuring the generalized spectral components of the white-dwarf background, LISA will be able to infer properties of the distribution of the white-dwarfs binary systems present in our Galaxy., Comment: 36 pages, 15 figures

Published
2005
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31. Upper limits on gravitational wave bursts in LIGO's second science run

Author

J. Logan, R. K. Nayak, R. Rahkola, I. Yakushin, Michael E Zucker, R. J. Dupuis, Guenakh Mitselmakher, Manuel Luna, Curt Cutler, Marco Aurelio Diaz, O. Spjeld, R. Zhu, M. C. Araya, A. Wilson, H. Ward, Roy Williams, Y. Hefetz, Gerhard Heinzel, C. Hardham, Benno Willke, T. Findley, Peter Fritschel, D. Ouimette, A. J. Weinstein, W. Wu, Amber Stuver, Sanichiro Yoshida, Graham Woan, Robert L. Byer, Stuart Reid, A. M. Gretarsson, M. Rakhmanov, R. L. Ward, E. Messaritaki, Badri Krishnan, Antony C. Searle, Frank Seifert, Joseph M. Kovalik, K. S. Ganezer, K. Watts, L. Ruet, Albert Lazzarini, E. Rotthoff, Bernard F. Schutz, G. Stapfer, J. Hanson, J. H. Romie, K. C. Cannon, K. Bayer, Sheila Rowan, Stefan Goßler, K. T. Reilly, Seiji Kawamura, Reinhard Prix, Alessandra Buonanno, L. Sievers, John Veitch, Guido Mueller, Morag M. Casey, M. Heurs, Robert J. McCarthy, M. Ito, Shinji Miyoki, B. J. Winjum, S. Wise, S. Grunewald, J. G. Rollins, Thomas Cokelaer, Rana X. Adhikari, Gareth Jones, A. Gillespie, T. Delker, Linqing Wen, Juri Agresti, A. Rizzi, R. Gustafson, B. Machenschalk, Osamu Miyakawa, David H. Reitze, Kevin C. Schlaufman, Kevin M. Carter, A. Grant, S. Liu, M. MacInnis, Herbert Welling, Nergis Mavalvala, C. Aulbert, R. S. Amin, S. Márka, A. Ageev, H. Tariq, T. Summerscales, Christian J. Killow, C. A. Cantley, Pankaj Sarin, A. C. Melissinos, Peter H. Sneddon, Kenneth G. Libbrecht, L. Zhang, Kenneth A. Strain, D. Farnham, Philippe Grandclément, Jan Harms, V. V. Frolov, B. C. Barish, J. Zweizig, V. Parameshwaraiah, Keisuke Goda, C. Robinson, A. Weidner, Benjamin William Allen, Michael Landry, P. J. Sutton, D. Barker, R. A. Mercer, Karsten Danzmann, M. C. Sumner, M. R. Smith, C. A. Shapiro, Adrian C. Ottewill, Joseph D. Romano, C. King, Kasem Mossavi, G. Billingsley, Haisheng Rong, G. Traylor, S. B. Anderson, K. D. Zaleski, R. DeSalvo, David B. Tanner, B. O'Reilly, S. Chelkowski, B. Lantz, Vuk Mandic, Erik Katsavounidis, S. Nagano, J. Garofoli, V. Schmidt, Peter Aufmuth, I. Salzman, K. Mailand, Robert Spero, Soumya D. Mohanty, N. Zotov, K. Mason, S. Roddy, D. Redding, V. Chickarmane, R. M. S. Schofield, Soma Mukherjee, Benjamin J. Owen, J. A. Giaime, Eric K. Gustafson, M. W. Regehr, P. Ehrens, Krzysztof Belczynski, B. F. Whiting, R. Mittleman, Scott Koranda, L. Matone, Sanjeev Dhurandhar, M. J. Lubinski, Thomas Corbitt, S. Meshkov, P. Hoang, Akiteru Takamori, S. Ray-Majumder, M. Sung, Richard L. Savage, R. Bennett, William E. Butler, E. Myers, K. V. Tokmakov, Erika D'Ambrosio, T. T. Lyons, A. Chandler, Nelson Christensen, B. Bhawal, M. Pedraza, K. Wette, A. Hartunian, H. Overmier, D. Chin, Stanislav Babak, Walid A. Majid, C. N. Colacino, Duncan A. Brown, Kevin M. Ryan, A. M. Sintes, Lee Samuel Finn, Vladimir B. Braginsky, Timothy Evans, P. G. Murray, K. Riles, Jeffrey A. Edlund, S. J. Berukoff, K. Kawabe, R. Coldwell, D. Sellers, A. Sibley, Yi Chen, Eugeniy E. Mikhailov, D. B. Kozak, M. Hennessy, Q. Z. Shu, Maria Alessandra Papa, B. Rivera, M. Hrynevych, C. Vorvick, Martin P McHugh, T. Regimbau, C. I. Torrie, A. Heptonstall, D. Sigg, S. W. Ballmer, M. Barnes, Julien Sylvestre, R. Burgess, Daniel C. Woods, M. Mageswaran, J. H. Hough, J. Allen, P. Csatorday, N. Hepler, D. I. Robertson, G. Moreno, W. G. Anderson, M. V. Plissi, Kent Blackburn, K. Reithmaier, L. Wallace, Andreas Freise, I. Leonor, John K. Cannizzo, R. Frey, Shantanu Desai, M. H. P. M. van Putten, A. Libson, S. Tilav, Peter Shawhan, J. Heefner, M. Tibbits, B. P. Abbott, Kip S. Thorne, S. Vass, Douglas R. Cook, David Crooks, Michele Zanolin, S. Seel, M. Coles, Hartmut Grote, M. Guenther, Matthew Pitkin, R. Wooley, P. J. King, D. Grimmett, Philip Nutzman, M. Malec, W. R. Johnston, Phil Willems, W. Kells, M. A. Barton, D. Busby, Brent Ware, Yousuke Itoh, E. Maros, A. G. Wiseman, D. Jungwirth, P. E. Lindquist, E. J. Daw, D. C. Coyne, D.B. DeBra, Michele Vallisneri, V. P. Mitrofanov, I. Zawischa, D. M. Strom, K. Rawlins, Ik Siong Heng, Patrick Brady, Roman Schnabel, N. Hindman, K. Y. Franzen, J. E. Brau, M. Hammond, Walter Winkler, C. Messenger, Subhasish Mitra, Lindon J. Robison, Harald Lück, Helena Armandula, E. J. Elliffe, T. Etzel, A. Bunkowski, W. Hua, M. W.E. Smith, J. Kern, H. Yamamoto, P. R. Williams, Lisa M. Goggin, D. Churches, N. A. Robertson, Gavin Davies, D. Steussy, B. Sears, L. Jones, S. Wen, Laura Cadonati, Vicky Kalogera, Susan M. Scott, Teviet Creighton, Herbert Walther, Gregory M. Harry, F. Raab, A. Marin, M. Lei, X. Siemens, K. Kötter, C. Wilkinson, J. Mason, T. Olson, B. Bochner, David H. Shoemaker, G. H. Sanders, R. Lawrence, P. Schwinberg, F. Nocera, Martin Hewitson, A. Khan, Jordan Camp, Massimo Tinto, Carlo Ungarelli, W. O. Hamilton, J. Dalrymple, D. Webber, Virginio Sannibale, David E. McClelland, S. Penn, S. Killbourn, A. S. Sengupta, Pamela J. Russell, S. Richman, V. Quetschke, James Whelan, F. Mann, C. Torres, Oliver Jennrich, P. Ajith, H. Ding, K. A. Thorne, J. Betzwieser, Bangalore Suryanarayana Sathyaprakash, E. Black, Martin M. Fejer, D. Ugolini, Carsten Fallnich, A. Rodriguez, C. Barker, Stefan Hild, J. R. Smith, R. Bork, T. Nash, Matthew Evans, L. Cardenas, Yi Pan, S. Klimenko, B. Johnson, B. J. Cusack, M. Lormand, M. Fine, A. Sazonov, G. Mendell, Richard J. K. Taylor, S. R. Rao, A. Bullington, C. Parameswariah, L. Bogue, J. Chapsky, J. Langdale, G. P. Newton, M. Fyffe, Sandra E. Wiley, Gabriela Gonzalez, M. Ashley, C. Gray, Gianpietro Cagnoli, D. Rose, V. Re, Jolien D. E. Creighton, Lindy Blackburn, Chunglee Kim, V. Sandberg, Rainer Weiss, R. W. P. Drever, W. W. Johnson, A. Ivanov, H. Radkins, S. P. Vyachanin, W. Tyler, Raymond G. Beausoleil, R. Balasubramanian, J. Myers, Shourov Chatterji, Suvadeep Bose, Alberto Vecchio, J. S. Noel, J. Castiglione, P. Charlton, A. Di Credico, I. A. Bilenko, V. Dergachev, Ian Taylor, David J. Ottaway, David Jones, Peter R. Saulson, R. Abbott, B. Bland, U. Weiland, S. E. Seader, Stephen Fairhurst, O. Matherny, B. Barr, J. Worden, A. Rüdiger, R. Riesen, Roland Schilling, F. Asiri, S. E. Whitcomb, and The LIGO Scientific Collaboration

Subjects
Nuclear and High Energy Physics, FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, rotational core collapse, General Relativity and Quantum Cosmology, Constant false alarm rate, 0103 physical sciences, DETECTORS, Waveform, ddc:530, ALGORITHM, 010306 general physics, QC, detectors, Physics, algorithm, 010308 nuclear & particles physics, Gravitational wave, Detector, PERFORMANCE, Noise floor, LIGO, SIGNAL, Amplitude, ROTATIONAL CORE COLLAPSE, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, signal, Noise (radio), performance
Abstract

We perform a search for gravitational wave bursts using data from the second science run of the LIGO detectors, using a method based on a wavelet time-frequency decomposition. This search is sensitive to bursts of duration much less than a second and with frequency content in the 100-1100Hz range. It features significant improvements in the instrument sensitivity and in the analysis pipeline with respect to the burst search previously reported by LIGO. Improvements in the search method allow exploring weaker signals, relative to the detector noise floor, while maintaining a low false alarm rate, O(0.1) microHz. The sensitivity in terms of the root-sum-square (rss) strain amplitude lies in the range of hrss~10^{-20} - 10^{-19}/sqrt(Hz) No gravitational wave signals were detected in 9.98 days of analyzed data. We interpret the search result in terms of a frequentist upper limit on the rate of detectable gravitational wave bursts at the level of 0.26 events per day at 90% confidence level. We combine this limit with measurements of the detection efficiency for given waveform morphologies in order to yield rate versus strength exclusion curves as well as to establish order-of-magnitude distance sensitivity to certain modeled astrophysical sources. Both the rate upper limit and its applicability to signal strengths improve our previously reported limits and reflect the most sensitive broad-band search for untriggered and unmodeled gravitational wave bursts to date., 23 pages, 14 figures, to be submitted to Phys Rev D

Published
2005

32. Simulation of the White Dwarf -- White Dwarf galactic background in the LISA data

Author

Massimo Tinto, Andrzej Królak, Jeffrey A. Edlund, and Gijs Nelemans

Subjects
Physics, education.field_of_study, COSMIC cancer database, Physics and Astronomy (miscellaneous), Gravitational wave, Cyclostationary process, Astronomy, Population, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, White dwarf, General Relativity and Quantum Cosmology (gr-qc), Galaxy, General Relativity and Quantum Cosmology, Amplitude, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, education, Noise (radio)
Abstract

LISA (Laser Interferometer Space Antenna) is a proposed space mission, which will use coherent laser beams exchanged between three remote spacecraft to detect and study low-frequency cosmic gravitational radiation. In the low-part of its frequency band, the LISA strain sensitivity will be dominated by the incoherent superposition of hundreds of millions of gravitational wave signals radiated by inspiraling white-dwarf binaries present in our own galaxy. In order to estimate the magnitude of the LISA response to this background, we have simulated a synthesized population that recently appeared in the literature. We find the amplitude of the galactic white-dwarf binary background in the LISA data to be modulated in time, reaching a minimum equal to about twice that of the LISA noise for a period of about two months around the time when the Sun-LISA direction is roughly oriented towards the Autumn equinox. Since the galactic white-dwarfs background will be observed by LISA not as a stationary but rather as a cyclostationary random process with a period of one year, we summarize the theory of cyclostationary random processes and present the corresponding generalized spectral method needed to characterize such process. We find that, by measuring the generalized spectral components of the white-dwarf background, LISA will be able to infer properties of the distribution of the white-dwarfs binary systems present in our Galaxy., 14 pages and 6 figures. Submitted to Classical and Quantum Gravity (Proceedings of GWDAW9)

Published
2005

33. Search for gravitational waves associated with the gamma ray burst GRB030329 using the LIGO detectors

Author

J. E. Brau, W. R. Johnston, S. Nagano, D. Ouimette, Sanichiro Yoshida, D. Redding, Graham Woan, Robert L. Byer, Stuart Reid, D. Jungwirth, Philippe Grandclément, P. J. Sutton, P. Hoang, Haisheng Rong, Jordan Camp, Lindon J. Robison, C. Messenger, M. Rakhmanov, Peter H. Sneddon, Bernard F. Schutz, G. Stapfer, A. S. Sengupta, Helena Armandula, J. Hanson, G. Newton, Alberto Vecchio, E. J. Elliffe, W. Hua, David H. Shoemaker, Guido Mueller, R. Amin, Darby Kozak, Michael E Zucker, F. Mann, J. Garofoli, B. Johnson, Morag M. Casey, M. Heurs, Marco Aurelio Diaz, Matthew Evans, L. Cardenas, Yi Pan, Albert Lazzarini, J. H. Romie, K. Bayer, T. Findley, Kevin M. Carter, B. J. Winjum, Walter Winkler, J. Chapsky, Shinji Miyoki, Daniel Sigg, F. J. Raab, S. Klimenko, R. Gustafson, A. Chandler, S. B. Anderson, Harald Lück, P. R. Williams, G. Mendell, Kevin M. Ryan, P. Csatorday, Badri Krishnan, Antony C. Searle, Frank Seifert, David B. Tanner, Joseph M. Kovalik, David Jones, J. Cannizzo, Roman Schnabel, D. Farnham, M. W. Regehr, N. Hepler, J. Betzwieser, A. Rizzi, S. Wise, S. Grunewald, M. V. Plissi, A. Marin, J. G. Rollins, S. Chatterji, C. Parameswariah, C. Gray, V. Schmidt, T. Regimbau, T. Summerscales, Peter R. Saulson, William E. Butler, C. I. Torrie, A. Heptonstall, Kenneth G. Libbrecht, M. Malec, A. Ageev, M. Pedraza, J. Langdale, H. Ding, M. Fyffe, T. Delker, David Crooks, K. Kawabe, B. Rivera, B. Bland, D. Churches, J. Zweizig, Jan Harms, M. Ito, Hartmut Grote, M. Lormand, Sandra E. Wiley, M. Fine, C. Vorvick, Gabriela Gonzalez, Maria Alessandra Papa, Massimo Tinto, U. Weiland, M. Mageswaran, Phil Willems, J. Logan, R. K. Nayak, C. A. Shapiro, G. Billingsley, R. Rahkola, Martin P McHugh, M. H. P. M. van Putten, S. Tilav, Richard J. K. Taylor, Gianpietro Cagnoli, A. Bullington, Linqing Wen, S. Penn, M. Hrynevych, Pamela J. Russell, S. Richman, Kent Blackburn, B. Lantz, P. E. Lindquist, L. Bogue, S. Meshkov, S. E. Seader, I. Salzman, W. G. Anderson, T. Etzel, A. L. Stuver, J. S. Noel, Oliver Jennrich, Peter Shawhan, M. Tibbits, B. P. Abbott, K. A. Thorne, Joseph D. Romano, R. M. S. Schofield, N. A. Robertson, N. Hindman, D. M. Strom, Robert Spero, Soumya D. Mohanty, C. Aulbert, H. Ward, Scott Koranda, Benjamin J. Owen, E. Maros, C. King, N. Zotov, S. Vass, D. Ugolini, Carsten Fallnich, Kasem Mossavi, V. Chickarmane, Stefan Hild, L. Matone, Soma Mukherjee, D. Rose, K. V. Tokmakov, Keisuke Goda, F. Asiri, A. M. Gretarsson, J. Myers, K. Mason, P. Ehrens, W. Kells, D. Busby, Martin Hewitson, E. Messaritaki, H. Tariq, P. Schwinberg, B. Bhawal, Sheila Rowan, Sanjeev Dhurandhar, J. Castiglione, K. Rawlins, A. Bunkowski, Erik Katsavounidis, D. Webber, S. Ray-Majumder, Suvadeep Bose, V. Re, M. A. Barton, A. Sibley, H. Yamamoto, R. Bork, Stephen Fairhurst, Timothy Evans, R. Coldwell, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Black, M. J. Lubinski, D.B. DeBra, P. Charlton, Carlo Ungarelli, Martin M. Fejer, J. R. Smith, Rainer Weiss, R. W. P. Drever, M. R. Smith, S. W. Ballmer, A. Di Credico, T. Nash, O. Matherny, A. Sazonov, C. N. Colacino, Vladimir B. Braginsky, K. Y. Franzen, W. W. Johnson, B. Barr, K. Riles, G. Moreno, Kenneth A. Strain, I. Leonor, A. Weidner, A. Gillespie, J. Worden, Eric K. Gustafson, Laura Cadonati, W. O. Hamilton, I. A. Bilenko, V. Dergachev, Ian Taylor, Yi Chen, M. Hennessy, Q. Z. Shu, M. Hammond, R. A. Mercer, S. Killbourn, A. Rüdiger, B. O'Reilly, David J. Ottaway, John Veitch, S. Wen, T. T. Lyons, James Whelan, R. Riesen, L. Zhang, R. McCarthy, Yousuke Itoh, Susan M. Scott, E. J. Daw, J. Kern, V. V. Frolov, L. Jones, Robert Bennett, Roland Schilling, G. H. Sanders, R. Lawrence, Teviet Creighton, Herbert Walther, V. Parameshwaraiah, C. Torres, A. J. Weinstein, W. Wu, C. Barker, X. Siemens, K. Kötter, P. G. Murray, C. Wilkinson, J. H. Hough, M. Landry, D. Chin, B. Bochner, Stanislav Babak, Walid A. Majid, J. W C McNabb, Richard J. Abbott, Douglas R. Cook, Duncan A. Brown, F. Nocera, Michele Zanolin, S. Seel, A. Grant, S. Liu, Brent Ware, M. MacInnis, Peter Fritschel, G. Traylor, Thomas Corbitt, Akiteru Takamori, S. E. Whitcomb, S. J. Berukoff, K. Reithmaier, Andreas Freise, A. Libson, Matthew Pitkin, R. Wooley, D. Barker, S. Chelkowski, S. Roddy, A. M. Sintes, P. Aufmuth, Lee Samuel Finn, M. Barnes, Julien Sylvestre, L. Wallace, R. Frey, P. J. King, D. Grimmett, Philip Nutzman, A. G. Wiseman, D. C. Coyne, I. Yakushin, Guenakh Mitselmakher, R. Zhu, L. Sievers, Thomas Cokelaer, Y. Hefetz, Gerhard Heinzel, C. Hardham, Benno Willke, Alessandra Buonanno, A. Wilson, C. A. Cantley, Benjamin William Allen, Karsten Danzmann, M. C. Sumner, Erika D'Ambrosio, Kip S. Thorne, V. P. Mitrofanov, M. C. Araya, D. Steussy, B. Sears, Vicky Kalogera, J. Mason, B. F. Whiting, H. Overmier, M. Coles, M. Guenther, Michael D. Smith, Patrick Brady, Seiji Kawamura, J. A. Giaime, Reinhard Prix, Osamu Miyakawa, David H. Reitze, Christian J. Killow, Roy Williams, K. S. Ganezer, K. Watts, Stefan Goßler, K. T. Reilly, Kevin C. Schlaufman, Herbert Welling, Nergis Mavalvala, B. C. Barish, K. D. Zaleski, R. DeSalvo, Adrian C. Ottewill, K. Mailand, Richard L. Savage, Krzysztof Belczynski, Jeffrey A. Edlund, R. Mittleman, R. Burgess, D. I. Robertson, Nelson Christensen, A. Hartunian, J. Heefner, Michele Vallisneri, Ik Siong Heng, S. Márka, R. J. Dupuis, E. Rotthoff, Gregory M. Harry, M. Lei, Rana X. Adhikari, B. Machenschalk, T. Olson, A. Khan, Virginio Sannibale, David E. McClelland, I. Zawischa, Curt Cutler, A. Ivanov, H. Radkins, S. P. Vyachanin, W. Tyler, Raymond G. Beausoleil, R. Balasubramanian, M. Ashley, Jolien D. E. Creighton, Lindy Blackburn, Chunglee Kim, V. Sandberg, B. J. Cusack, S. R. Rao, and The LIGO Scientific Collaboration

Subjects
stars, Nuclear and High Energy Physics, Gravitational-wave observatory, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, General Relativity and Quantum Cosmology (gr-qc), Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, Observatory, 0103 physical sciences, emission, ddc:530, 010303 astronomy & astrophysics, QC, curve, unusual supernova, Physics, optical afterglow, 010308 nuclear & particles physics, Gravitational wave, Astrophysics (astro-ph), Astronomy, dynamics, LIGO, core-collapse, explorer, Supernova, Interferometry, grb-030329, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, Gamma-ray burst, signal
Abstract

We have performed a search for bursts of gravitational waves associated with the very bright Gamma Ray Burst GRB030329, using the two detectors at the LIGO Hanford Observatory. Our search covered the most sensitive frequency range of the LIGO detectors (approximately 80-2048 Hz), and we specifically targeted signals shorter than 150 ms. Our search algorithm looks for excess correlated power between the two interferometers and thus makes minimal assumptions about the gravitational waveform. We observed no candidates with gravitational wave signal strength larger than a pre-determined threshold. We report frequency dependent upper limits on the strength of the gravitational waves associated with GRB030329. Near the most sensitive frequency region, around 250 Hz, our root-sum-square (RSS) gravitational wave strain sensitivity for optimally polarized bursts was better than h_RSS = 6E-21 Hz^{-1/2}. Our result is comparable to the best published results searching for association between gravitational waves and GRBs., Comment: 18 pages, 9 figures and 3 tables; Updated according to journal reviewer's comments

Published
2005
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34. Upper limits from the LIGO and TAMA detectors on the rate of gravitational-wave bursts

Author

H. Ward, A. Chandler, Kevin M. Ryan, T. Regimbau, Ken'ichi Nakagawa, C. I. Torrie, John Veitch, A. Heptonstall, M. Malec, Jordan Camp, J. Dalrymple, M. Ashley, A. S. Sengupta, Norikatsu Mio, Shinji Miyoki, Jun'ichi Yokoyama, J. Allen, N. Hepler, Akira Okutomi, Phil Willems, D. M. Strom, A. Yamamoto, Jolien D. E. Creighton, Lindy Blackburn, Matthew Evans, L. Cardenas, Yi Pan, Takashi Kuwabara, Richard J. K. Taylor, Gianpietro Cagnoli, Shihori Sakata, C. Aulbert, M. MacInnis, Keita Kawabe, R. S. Amin, Chunglee Kim, Seiji Kawamura, Hiroyuki Nakano, Reinhard Prix, Juri Agresti, A. Rizzi, V. Sandberg, K. Rawlins, A. Bunkowski, Shuzo Takemoto, S. Klimenko, Ryutaro Takahashi, W. R. Johnston, Masa-Katsu Fujimoto, Osamu Miyakawa, David H. Reitze, Christian J. Killow, G. Mendell, J. Myers, Shourov Chatterji, Lindon J. Robison, Helena Armandula, E. J. Elliffe, Suvadeep Bose, A. Ageev, Daisuke Tatsumi, A. Wilson, Kazuyuki Miura, Roy Williams, Kenji Soida, K. S. Ganezer, J. S. Noel, Hiromi Mizusawa, Namio Matsuda, J. Castiglione, Lisa M. Goggin, D. Rose, Hideki Asada, Jan Harms, K. Watts, T. Summerscales, Michael Landry, Roman Schnabel, C. A. Shapiro, Masaru Shibata, Stefan Goßler, K. T. Reilly, Toru Tanji, T. Nakamura, B. F. Whiting, David H. Shoemaker, V. Re, Y. Ogawa, Norihiko Kamikubota, Y. Hefetz, Gerhard Heinzel, C. Hardham, M. R. Smith, Masatake Ohashi, H. Overmier, Robert J. McCarthy, Linqing Wen, Shuichi Sato, Joseph D. Romano, C. King, Shoken M. Miyama, Kasem Mossavi, P. Charlton, A. Di Credico, I. A. Bilenko, V. Dergachev, Ian Taylor, David J. Ottaway, Laura Cadonati, G. Billingsley, D. Sellers, Amber Stuver, Sanichiro Yoshida, A. Ivanov, Y. Saito, J. E. Brau, Subhasish Mitra, D. Churches, P. G. Murray, J. H. Hough, C. Parameswariah, J. Langdale, G. P. Newton, M. Fyffe, Sandra E. Wiley, Gabriela Gonzalez, M. Hrynevych, Peter H. Sneddon, Graham Woan, Zong Hong Zhu, Robert L. Byer, Stuart Reid, Kevin C. Schlaufman, Scott Koranda, Akitoshi Ueda, A. Gillespie, Susan M. Scott, Teviet Creighton, Herbert Welling, F. Mann, Rainer Weiss, Kiminori Kondo, Herbert Walther, Benno Willke, R. W. P. Drever, Nergis Mavalvala, H. Radkins, R. L. Savage, L. Ruet, S. P. Vyachanin, M. Coles, L. Matone, M. Guenther, Yasufumi Kojima, E. Rotthoff, Misao Sasaki, Naoko Ohishi, B. C. Barish, Takaharu Kaneyama, M. Rakhmanov, Michael D. Smith, Bernard F. Schutz, Chad Hanna, G. Stapfer, J. Hanson, C. Torres, A. Rodriguez, S. Meshkov, C. Barker, X. Siemens, K. Kötter, Douglas R. Cook, Michael E Zucker, W. Tyler, Michele Zanolin, S. Seel, C. Wilkinson, G. H. Sanders, R. Lawrence, Mitsuru Musha, W. W. Johnson, B. Johnson, S. Nagano, R. L. Ward, K. D. Zaleski, D. Redding, J. Garofoli, Alessandra Buonanno, R. DeSalvo, Patrick Brady, C. A. Cantley, A. Sibley, Raymond G. Beausoleil, R. Balasubramanian, Ryuichi Fujita, I. Leonor, John K. Cannizzo, C. Robinson, Benjamin William Allen, Alberto Vecchio, M. A. Barton, Rana X. Adhikari, Yoshitaka Nagayama, Guido Mueller, Gareth Jones, B. Machenschalk, R. Rahkola, Pankaj Sarin, Karsten Danzmann, M. C. Sumner, B. Lantz, J. Chapsky, H. Yamamoto, Hideo Iguchi, Tatsuru Yoshida, P. Hoang, Manuel Luna, J. H. Romie, K. Bayer, F. Nocera, F. J. Raab, D.B. DeBra, T. Etzel, K. Y. Franzen, Keisuke Goda, Gavin Davies, Marco G. Tarallo, I. Salzman, D. Farnham, D. Steussy, B. Sears, Akito Araya, V. Schmidt, R. M. S. Schofield, David Jones, Hideaki Kudoh, Benjamin J. Owen, A. M. Gretarsson, Tomiyoshi Haruyama, W. O. Hamilton, R. Gustafson, Erik Katsavounidis, Eugeniy E. Mikhailov, B. J. Cusack, M. Hammond, Kimio Tsubono, Vicky Kalogera, J. Kern, Jeffrey A. Edlund, E. J. Daw, M. J. Lubinski, William E. Butler, D. B. Kozak, E. Myers, K. V. Tokmakov, Takayuki Tomaru, E. Messaritaki, S. Killbourn, Martin Hewitson, Koji Arai, R. Burgess, Daniel C. Woods, B. Rivera, D. Webber, Peter R. Saulson, Hisa-aki Shinkai, L. Jones, M. Lormand, H. Ding, R. Abbott, M. Fine, V. Quetschke, Sheila Rowan, James Whelan, P. Ajith, C. Vorvick, Takashi Uchiyama, Kunihito Ioka, M. Mageswaran, Peter Fritschel, S. Penn, Masao Tokunari, Vladimir B. Braginsky, K. Reithmaier, Andreas Freise, S. R. Rao, Robert Bennett, A. Libson, Marco Aurelio Diaz, D. I. Robertson, Erika D'Ambrosio, Pamela J. Russell, Souichi Telada, Junwei Cao, K. Riles, Martin P McHugh, M. H. P. M. van Putten, S. Tilav, Matthew Pitkin, J. Heefner, Toshitaka Yamazaki, Mayu Katsuki, P. Schwinberg, Yoshihide Kozai, Bangalore Suryanarayana Sathyaprakash, E. Black, Martin M. Fejer, Hideyuki Tagoshi, J. R. Smith, R. Bork, T. Nash, K. C. Cannon, J. Zweizig, R. Wooley, Kazuhiro Hayama, A. Sazonov, J. Mason, Ken-ichi Nakao, W. G. Anderson, K. Oohara, E. Maros, Peter Shawhan, S. Richman, M. Tibbits, B. P. Abbott, Yousuke Itoh, Oliver Jennrich, K. A. Thorne, J. Betzwieser, Kazuaki Kuroda, Koichi Waseda, N. Sato, M. Kawamura, S. Wen, A. Bullington, Michele Vallisneri, I. Zawischa, Robert Spero, Soumya D. Mohanty, Fumiko Kawazoe, D. Ugolini, Carsten Fallnich, Stefan Hild, S. Vass, L. Bogue, A. J. Weinstein, Ik Siong Heng, Shantanu Desai, J. W C McNabb, W. Wu, P. T. Beyersdorf, N. Zotov, W. Kells, Soma Mukherjee, Taketoshi Kasai, K. Mason, Sanjeev Dhurandhar, Kip S. Thorne, Badri Krishnan, Shigemi Otsuka, S. Ray-Majumder, D. Busby, Curt Cutler, T. Findley, C. Gray, Kentaro Somiya, Naoki Seto, D. Ouimette, M. C. Araya, Antony C. Searle, V. V. Frolov, Kevin M. Carter, Frank Seifert, C. N. Colacino, S. B. Anderson, A. Grant, S. Liu, V. Parameshwaraiah, L. Zhang, V. P. Mitrofanov, G. Traylor, Kenji Numata, Masaki Ando, Thomas Corbitt, Akiteru Takamori, Yusaku Hamuro, Joseph M. Kovalik, D. Chin, Stanislav Babak, Walid A. Majid, Yi Chen, M. Hennessy, Q. Z. Shu, David B. Tanner, M. W. Regehr, M. Sung, Duncan A. Brown, S. Wise, S. Grunewald, Brent Ware, Kouichi Sato, M. Pedraza, Maria Alessandra Papa, T. Akutsu, Kenneth G. Libbrecht, Kent Blackburn, N. A. Robertson, Carlo Ungarelli, Walter Winkler, Morag M. Casey, Harald Lück, P. R. Williams, M. Heurs, Toshikazu Suzuki, B. J. Winjum, A. Marin, Yoshio Nishi, A. C. Melissinos, B. Bochner, Massimo Tinto, David Crooks, Philippe Grandclément, P. J. Sutton, Haisheng Rong, Kazuhiro Yamamoto, N. Hindman, Toshifumi Futamase, P. Ehrens, K. Wette, Timothy Evans, R. Coldwell, D. Sigg, S. W. Ballmer, Y. Tsunesada, G. Moreno, J. Logan, R. K. Nayak, Yoshikazu Karasawa, R. J. Dupuis, Youhei Sato, H. Tariq, Shigenori Moriwaki, Vuk Mandic, Ken-ichi Ueda, J. A. Giaime, Katsuaki Kasahara, Eric K. Gustafson, T. T. Lyons, Albert Lazzarini, J. G. Rollins, T. Delker, F. Asiri, S. E. Whitcomb, Adrian C. Ottewill, K. Mailand, Krzysztof Belczynski, R. Mittleman, Kohei Takeno, B. Bland, Nelson Christensen, U. Weiland, Takahiro Tanaka, S. E. Seader, A. Hartunian, Stephen Fairhurst, O. Matherny, B. Barr, J. Worden, A. Rüdiger, Youhei Fujiki, R. Riesen, Roland Schilling, Nobuhiro Tsuda, Gregory M. Harry, M. Lei, I. Yakushin, Hirotaka Takahashi, T. Olson, Keisuke Taniguchi, Guenakh Mitselmakher, A. Khan, Virginio Sannibale, David E. McClelland, O. Spjeld, R. Zhu, Mitsuhiro Fukushima, C. Messenger, W. Hua, L. Sievers, Thomas Cokelaer, Yuriko Yanagi, Aya Sekido, Hideki Ishizuka, D. Barker, S. Chelkowski, S. Roddy, A. M. Sintes, Lee Samuel Finn, M. Barnes, Julien Sylvestre, Yoichi Aso, L. Wallace, R. Frey, S. Márka, Takakazu Shintomi, P. J. King, D. Grimmett, Philip Nutzman, Kenneth A. Strain, A. G. Wiseman, D. C. Coyne, A. Weidner, R. A. Mercer, B. O'Reilly, P. Csatorday, M. V. Plissi, Nobuyuki Kanda, Hartmut Grote, Yukiyoshi Iida, D. Jungwirth, P. E. Lindquist, Peter Aufmuth, V. Chickarmane, B. Bhawal, S. J. Berukoff, Keiko Kokeyama, M. Ito, The LIGO Scientific Collaboration, and TAMA Collaboration

Subjects
Nuclear and High Energy Physics, noise, Frequency band, FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, General Relativity and Quantum Cosmology, Coincidence, gravitational wave detectors, Coincident, 0103 physical sciences, black-hole coalescences, ddc:530, 010303 astronomy & astrophysics, QC, Physics, 010308 nuclear & particles physics, Gravitational wave, Bandwidth (signal processing), Detector, LIGO, Amplitude, gravitational waves, light interferometry, network, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
Abstract

We report on the first joint search for gravitational waves by the TAMA and LIGO collaborations. We looked for millisecond-duration unmodelled gravitational-wave bursts in 473 hr of coincident data collected during early 2003. No candidate signals were found. We set an upper limit of 0.12 events per day on the rate of detectable gravitational-wave bursts, at 90% confidence level. From simulations, we estimate that our detector network was sensitive to bursts with root-sum-square strain amplitude above approximately 1-3x10^{-19} Hz^{-1/2} in the frequency band 700-2000 Hz. We describe the details of this collaborative search, with particular emphasis on its advantages and disadvantages compared to searches by LIGO and TAMA separately using the same data. Benefits include a lower background and longer observation time, at some cost in sensitivity and bandwidth. We also demonstrate techniques for performing coincidence searches with a heterogeneous network of detectors with different noise spectra and orientations. These techniques include using coordinated signal injections to estimate the network sensitivity, and tuning the analysis to maximize the sensitivity and the livetime, subject to constraints on the background., Comment: 15 pages, 11 figures, to be submitted to Phys Rev D. Updated author list

Published
2005

35. First all-sky upper limits from LIGO on the strength of periodic gravitational waves using the Hough transform

Author

A. L. Stuver, B. Lantz, H. Yamamoto, David Crooks, Peter Aufmuth, V. Chickarmane, B. F. Whiting, B. Bhawal, J. S. Noel, S. J. Berukoff, K. D. Zaleski, K. Reithmaier, Andreas Freise, A. Libson, I. Salzman, S. Márka, D. B. Kozak, R. L. Ward, R. DeSalvo, Kenneth A. Strain, A. Weidner, R. A. Mercer, B. O'Reilly, H. Overmier, R. M. S. Schofield, Matthew Pitkin, R. Wooley, P. Csatorday, Alberto Vecchio, Y. Hefetz, Gerhard Heinzel, C. Hardham, Badri Krishnan, I. Leonor, John K. Cannizzo, M. V. Plissi, W. R. Johnston, C. Vorvick, J. Castiglione, Benjamin J. Owen, A. Wilson, Gregory M. Harry, J. H. Romie, Hartmut Grote, Antony C. Searle, M. Lei, D. Sellers, D. Jungwirth, Benno Willke, W. O. Hamilton, P. E. Lindquist, J. Logan, R. K. Nayak, E. Myers, K. Bayer, A. Ageev, K. V. Tokmakov, P. Charlton, A. Di Credico, F. J. Raab, T. Olson, E. Rotthoff, C. A. Shapiro, N. Hindman, R. Rahkola, L. Ruet, M. Coles, M. Guenther, G. Mendell, S. Killbourn, James Whelan, H. Ding, Martin Hewitson, I. A. Bilenko, V. Dergachev, Ian Taylor, Jan Harms, Frank Seifert, A. Khan, Joseph M. Kovalik, Richard L. Savage, Keisuke Goda, W. G. Anderson, Rana X. Adhikari, Virginio Sannibale, David E. McClelland, Alessandra Buonanno, Patrick Brady, Peter Shawhan, Gareth Jones, I. Yakushin, Sanichiro Yoshida, C. Parameswariah, David J. Ottaway, R. Gustafson, Erik Katsavounidis, R. J. Dupuis, B. Machenschalk, M. Tibbits, B. P. Abbott, C. A. Cantley, Adrian C. Ottewill, Lindon J. Robison, H. Tariq, Graham Woan, S. Vass, C. Robinson, M. J. Lubinski, J. Langdale, G. P. Newton, M. Fyffe, Sandra E. Wiley, B. J. Cusack, Robert L. Byer, Stuart Reid, Scott Koranda, Benjamin William Allen, K. Mailand, L. Matone, Morag M. Casey, M. Heurs, Gavin Davies, D. Steussy, B. Sears, D. Rose, B. J. Winjum, Michael E Zucker, M. Rakhmanov, Richard J. K. Taylor, Helena Armandula, E. J. Elliffe, Bernard F. Schutz, Krzysztof Belczynski, R. Mittleman, Nelson Christensen, A. Hartunian, W. Kells, D. Busby, Vicky Kalogera, Gianpietro Cagnoli, Vuk Mandic, S. Meshkov, Karsten Danzmann, M. C. Sumner, Vladimir B. Braginsky, K. Riles, G. Stapfer, H. Ward, A. Sibley, Guenakh Mitselmakher, O. Spjeld, R. Zhu, E. J. Daw, S. R. Rao, J. A. Giaime, Eric K. Gustafson, A. C. Melissinos, J. Hanson, Jeffrey A. Edlund, R. Burgess, Erika D'Ambrosio, Gabriela Gonzalez, Guido Mueller, Manuel Luna, S. Nagano, M. Ashley, V. Re, T. Etzel, T. T. Lyons, D. Redding, O. Matherny, Daniel C. Woods, J. Myers, J. Zweizig, I. Zawischa, J. Allen, N. Hepler, Yousuke Itoh, J. W C McNabb, Robert J. McCarthy, Linqing Wen, Albert Lazzarini, Shourov Chatterji, P. Hoang, Roman Schnabel, Soma Mukherjee, Suvadeep Bose, J. E. Brau, D. I. Robertson, Roy Williams, Rainer Weiss, Philippe Grandclément, P. Ehrens, P. J. Sutton, B. Barr, L. Sievers, P. Schwinberg, R. W. P. Drever, Jolien D. E. Creighton, Shantanu Desai, Haisheng Rong, C. Messenger, Subhasish Mitra, Kip S. Thorne, D. Churches, D. Webber, W. W. Johnson, Robert Spero, Soumya D. Mohanty, J. Mason, Thomas Cokelaer, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, John Veitch, Lindy Blackburn, Chunglee Kim, V. Sandberg, J. Worden, Kevin M. Carter, M. R. Smith, Eugeniy E. Mikhailov, P. G. Murray, T. Regimbau, David Jones, E. Black, M. Barnes, Julien Sylvestre, Martin M. Fejer, J. R. Smith, R. Bork, K. S. Ganezer, W. Hua, T. Findley, S. B. Anderson, Joseph D. Romano, C. King, Kasem Mossavi, D. Ouimette, K. Watts, C. I. Torrie, A. Heptonstall, V. P. Mitrofanov, K. Wette, Juri Agresti, Timothy Evans, A. Rizzi, L. Wallace, R. Coldwell, R. Frey, M. Malec, J. G. Rollins, J. H. Hough, Douglas R. Cook, A. Rüdiger, T. Nash, N. Zotov, K. Mason, Sanjeev Dhurandhar, P. J. King, S. Ray-Majumder, A. Sazonov, M. MacInnis, D. Grimmett, Marco Aurelio Diaz, A. Parameswaran, Philip Nutzman, A. Ivanov, H. Radkins, David B. Tanner, M. Lormand, M. W. Regehr, M. Fine, G. H. Sanders, R. Lawrence, A. M. Gretarsson, Michele Zanolin, D. Sigg, S. W. Ballmer, Peter R. Saulson, T. Delker, A. G. Wiseman, T. Summerscales, G. Moreno, R. S. Amin, Seiji Kawamura, Reinhard Prix, Stefan Goßler, K. T. Reilly, R. Riesen, S. P. Vyachanin, W. Tyler, M. Sung, A. Gillespie, A. Chandler, S. Wise, S. Seel, S. Grunewald, R. Abbott, D. C. Coyne, Michael Landry, Peter H. Sneddon, Roland Schilling, Phil Willems, Raymond G. Beausoleil, R. Balasubramanian, Curt Cutler, E. Messaritaki, Kevin M. Ryan, Osamu Miyakawa, M. Pedraza, A. Bullington, Kevin C. Schlaufman, G. Billingsley, C. N. Colacino, V. V. Frolov, Sheila Rowan, M. C. Araya, D. Barker, Maria Alessandra Papa, Herbert Welling, Kenneth G. Libbrecht, L. Bogue, V. Parameshwaraiah, S. Penn, J. Garofoli, David H. Reitze, Christian J. Killow, Nergis Mavalvala, S. Chelkowski, Pamela J. Russell, S. Richman, A. J. Weinstein, S. Roddy, Oliver Jennrich, Kent Blackburn, W. Wu, B. C. Barish, D. Chin, Stanislav Babak, Walid A. Majid, M. Ito, Yi Chen, K. A. Thorne, J. Betzwieser, J. Heefner, N. A. Robertson, A. M. Sintes, D. Ugolini, M. Hennessy, Q. Z. Shu, Carsten Fallnich, Duncan A. Brown, Lee Samuel Finn, Jordan Camp, Stefan Hild, J. Dalrymple, A. S. Sengupta, D. M. Strom, Brent Ware, A. Grant, S. Liu, K. Kawabe, B. Rivera, L. Zhang, M. Mageswaran, Carlo Ungarelli, Michele Vallisneri, Ik Siong Heng, Walter Winkler, Harald Lück, P. R. Williams, Matthew Evans, L. Cardenas, Yi Pan, S. Klimenko, A. Marin, B. Bochner, Massimo Tinto, B. Bland, U. Weiland, S. E. Seader, Lisa M. Goggin, K. Rawlins, A. Bunkowski, Stephen Fairhurst, M. A. Barton, F. Asiri, S. E. Whitcomb, D.B. DeBra, David H. Shoemaker, K. Y. Franzen, Peter Fritschel, C. Torres, K. C. Cannon, M. Hammond, A. Rodriguez, M. W.E. Smith, J. Kern, L. Jones, C. Barker, Pankaj Sarin, Shinji Miyoki, D. Farnham, C. Aulbert, F. Mann, V. Schmidt, G. Traylor, R. Bennett, William E. Butler, Thomas Corbitt, Akiteru Takamori, Martin P McHugh, M. H. P. M. van Putten, S. Tilav, E. Maros, Laura Cadonati, M. Hrynevych, Susan M. Scott, Teviet Creighton, Herbert Walther, X. Siemens, K. Kötter, C. Wilkinson, F. Nocera, B. Johnson, J. Chapsky, S. Wen, and C. Gray

Subjects
Nuclear and High Energy Physics, Gravitational-wave observatory, interferometer, FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, Radio spectrum, General Relativity and Quantum Cosmology, Hough transform, law.invention, precessing neutron-stars, Pulsar, law, 0103 physical sciences, emission, ddc:530, 010306 general physics, QC, Physics, search, detector, 010308 nuclear & particles physics, Gravitational wave, LIGO, geo-600, Neutron star, Amplitude, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
Abstract

We perform a wide parameter space search for continuous gravitational waves over the whole sky and over a large range of values of the frequency and the first spin-down parameter. Our search method is based on the Hough transform, which is a semi-coherent, computationally efficient, and robust pattern recognition technique. We apply this technique to data from the second science run of the LIGO detectors and our final results are all-sky upper limits on the strength of gravitational waves emitted by unknown isolated spinning neutron stars on a set of narrow frequency bands in the range 200-$400 $Hz. The best upper limit on the gravitational wave strain amplitude that we obtain in this frequency range is $4.43\times 10^{-23}$., Comment: 22 pages, 21 figures, to be submitted to Phys. Rev. D

Published
2005
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36. Limits on gravitational-wave emission from selected pulsars using LIGO data

Author

Peter Aufmuth, Y. Hefetz, Gerhard Heinzel, C. Hardham, V. Chickarmane, C. Gray, Benno Willke, H. Tariq, P. Williams, Alessandra Buonanno, Erika D'Ambrosio, T. Summerscales, D. B. Kozak, K. D. Zaleski, Laura Cadonati, Susan M. Scott, Teviet Creighton, Herbert Walther, C. Torres, X. Siemens, K. Kötter, C. Messenger, B. Bhawal, Peter Fritschel, M. Lormand, M. Fine, G. Traylor, Thomas Corbitt, Akiteru Takamori, C. Vorvick, F. Nocera, Alicia M. Sintes, R. DeSalvo, P. G. Murray, T. Regimbau, C. I. Torrie, A. Heptonstall, G. Billingsley, Phil Willems, A. Bullington, L. Bogue, V. V. Frolov, Kip S. Thorne, R. L. Savage, D. M. Strom, J. A. Giaime, Eric K. Gustafson, J. H. Hough, M. Barnes, Julien Sylvestre, W. Hua, Shuhei Yoshida, D. Farnham, J. Romie, Douglas R. Cook, Walter Winkler, Michael Kramer, L. Matone, V. Parameshwaraiah, F. Asiri, A. M. Gretarsson, B. Lantz, W. G. Anderson, E. Messaritaki, I. Salzman, V. P. Mitrofanov, Michele Zanolin, S. Seel, Keisuke Goda, M. A. Barton, Shigeo Nagano, S. Roddy, N. A. Robertson, F. J. Raab, Harald Lück, W. R. Johnston, Peter Shawhan, Robert Spero, Soumya D. Mohanty, Jeffrey A. Edlund, D. Chin, Stanislav Babak, J. Garofoli, B. F. Whiting, M. Tibbits, B. P. Abbott, Benjamin J. Owen, Sheila Rowan, C. Wilkinson, H. Ward, Erik Katsavounidis, V. Re, Badri Krishnan, V. Sannibale, L. Wallace, R. Burgess, R. Frey, K. V. Tokmakov, William E. Butler, D.B. DeBra, N. Zotov, Albrecht Rüdiger, Antony C. Searle, M. J. Lubinski, A. Wilson, T. T. Lyons, R. Taylor, B. J. Cusack, Duncan A. Brown, Rainer Weiss, K. Y. Franzen, S. Vass, H. Overmier, Martin Hewitson, R. W. P. Drever, Vladimir B. Braginsky, John Worden, A. Ageev, Frank Seifert, Adrian C. Ottewill, D. I. Robertson, Graham Woan, W. W. Johnson, Joseph M. Kovalik, K. Riles, K. Mailand, J. Logan, R. K. Nayak, K. Mason, Robert L. Byer, Stuart Reid, Jan Harms, Martin P McHugh, Brent Ware, Krzysztof Belczynski, M. H. P. M. van Putten, D. Grimmett, Philip Nutzman, M. Hammond, J. Heefner, Sanjeev Dhurandhar, S. Ray-Majumder, W. Kells, D. Busby, C. A. Shapiro, S. Berukoff, Lindon J. Robison, Corey Cutler, H. Yamamoto, R. Mittleman, Nelson Christensen, A. Hartunian, Michael E Zucker, Jordan Camp, R. Rahkola, Yousuke Itoh, Helena Armandula, S. E. Whitcomb, E. J. Elliffe, S. Gossler, T. Findley, S. R. Rao, G. Mendell, J. Kern, M. Rakhmanov, L. Jones, M. Coles, Simon Chelkowski, S. Tilav, Bernard F. Schutz, C. A. Cantley, C. N. Colacino, A. G. Wiseman, G. Stapfer, A. S. Sengupta, G. Newton, J. Hanson, Benjamin William Allen, Robert Bennett, A. J. Weinstein, Karsten Danzmann, M. C. Sumner, W. Wu, John Veitch, Carlo Ungarelli, M. Ashley, M. Landry, Michael D. Smith, Robert J. McCarthy, Linqing Wen, C. Parameswariah, S. Meshkov, M. C. Araya, D. C. Coyne, W. O. Hamilton, Guido Mueller, D. Rose, E. Maros, M. MacInnis, Michele Vallisneri, Ik Siong Heng, Patrick Brady, K. Reithmaier, P. Russell, Andreas Freise, Matthew Evans, L. Cardenas, M. Malec, Scott Koranda, S. Killbourn, S. Márka, James Whelan, Yi Pan, Joseph D. Romano, C. King, Yi Chen, M. Hennessy, Q. Z. Shu, J. Langdale, M. Fyffe, S. Wise, Sandra E. Wiley, Gabriela Gonzalez, A. Grant, S. Liu, P. Schwinberg, A. Libson, Matthew Pitkin, I. Leonor, S. Grunewald, D. Steussy, B. Sears, R. J. Dupuis, Kasem Mossavi, R. Wooley, L. Zhang, Andrew Lyne, S. Klimenko, Marco Aurelio Diaz, Jolien D. E. Creighton, Vicky Kalogera, Shinji Miyoki, V. Schmidt, B. Bochner, K. Bayer, W. Majid, D. Barker, Lindy Blackburn, K. Rawlins, Chunglee Kim, M. Guenther, Gregory M. Harry, E. J. Daw, M. Lei, Roman Schnabel, V. Sandberg, J. E. Brau, Kenneth A. Strain, A. Weidner, Kenneth G. Libbrecht, Albert Lazzarini, R. A. Mercer, Roy Williams, D. Churches, T. Etzel, K. S. Ganezer, A. Chandler, Massimo Tinto, C. Aulbert, I. Zawischa, A. Sibley, S. Wen, Rana X. Adhikari, A. Khan, R. Gustafson, B. Machenschalk, K. Watts, K. T. Reilly, S. Penn, D. Redding, B. O'Reilly, A. Sazonov, David E. McClelland, J. W C McNabb, N. Hepler, R. Zhu, S. Chatterji, A. Ivanov, A. Rizzi, B. Bland, Seiji Kawamura, T. Olson, Reinhard Prix, H. Radkins, U. Weiland, Soma Mukherjee, D. Jungwirth, P. Hoang, S. Richman, Oliver Jennrich, Kevin M. Carter, J. Zweizig, P. Csatorday, S. B. Anderson, Osamu Miyakawa, David H. Reitze, Lee Samuel Finn, A. Marin, David H. Shoemaker, R. Amin, D. Webber, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Black, David B. Tanner, M. W. Regehr, S. P. Vyachanin, W. Tyler, Raymond G. Beausoleil, Kevin C. Schlaufman, Peter H. Sneddon, Herbert Welling, Nergis Mavalvala, Martin M. Fejer, R. Balasubramanian, J. R. Smith, J. Mason, S. E. Seader, R. Bork, Christian J. Killow, T. Nash, K. A. Thorne, J. Betzwieser, D. Ugolini, B. C. Barish, M. V. Plissi, M. Pedraza, T. Delker, Kris Ryan, J. Rollins, Maria Alessandra Papa, I. Yakushin, F. Mann, Kent Blackburn, Alberto Vecchio, Hartmut Grote, Guenakh Mitselmakher, Carsten Fallnich, Stefan Hild, A. Bunkowski, K. Kawabe, B. Rivera, David Jones, M. Hrynevych, B. Johnson, M. Mageswaran, P. E. Lindquist, C. Barker, R. Schofield, M. Ito, L. Sievers, Thomas Cokelaer, Peter R. Saulson, H. Ding, J. Chapsky, R. Abbott, Stephen Fairhurst, A. L. Stuver, O. Matherny, Phil D. C. King, J. S. Noel, J. Castiglione, P. Charlton, M. R. Smith, D. Ouimette, A. Di Credico, B. Barr, I. A. Bilenko, V. Dergachev, Ian Taylor, David J. Ottaway, Philippe Grandclément, P. J. Sutton, Haisheng Rong, R. Riesen, Roland Schilling, G. H. Sanders, R. Lawrence, Gianpietro Cagnoli, J. Myers, Suvadeep Bose, Morag M. Casey, M. Heurs, B. J. Winjum, David Crooks, N. Hindman, E. Rotthoff, P. Ehrens, Timothy Evans, R. Coldwell, D. Sigg, S. W. Ballmer, G. Moreno, A. Gillespie, and The LIGO Scientific Collaboration

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Phase (waves), General Physics and Astronomy, FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), Gravity waves, Interferometric detectors, Strain limit, 01 natural sciences, General Relativity and Quantum Cosmology, Gravitation, Pulsar, 0103 physical sciences, ddc:530, 010303 astronomy & astrophysics, QC, Pulsars, Physics, 010308 nuclear & particles physics, Gravitational wave, Radio observation, Detector, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Gravitational effects, Astronomy, Gravitational-wave signals, LIGO, Upper limits, Interferometry, Amplitude, Gravitational-wave emission, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, Radio pulsars, Coherent multidetector analysis
Abstract

We place direct upper limits on the amplitude of gravitational waves from 28 isolated radio pulsars by a coherent multi-detector analysis of the data collected during the second science run of the LIGO interferometric detectors. These are the first direct upper limits for 26 of the 28 pulsars. We use coordinated radio observations for the first time to build radio-guided phase templates for the expected gravitational wave signals. The unprecedented sensitivity of the detectors allow us to set strain upper limits as low as a few times $10^{-24}$. These strain limits translate into limits on the equatorial ellipticities of the pulsars, which are smaller than $10^{-5}$ for the four closest pulsars., Comment: 6 pages, 2 figures

Published
2005
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37. Setting upper limits on the strength of periodic gravitational waves from PSRJ1939+2134using the first science data from the GEO 600 and LIGO detectors

Author

A. S. Sengupta, Michael E Zucker, T. Regimbau, M. R. Pratt, Matthew Evans, C. I. Torrie, K. Reithmaier, Andreas Freise, L. Cardenas, A. Heptonstall, M. Malec, S. Klimenko, Phil Willems, A. Wilson, Albert Lazzarini, D. M. Strom, Marco Aurelio Diaz, D. Rose, Matthew Pitkin, R. Wooley, Rainer Weiss, R. W. P. Drever, W. W. Johnson, M. Lormand, M. Fine, Richard Ingley, I. Zawischa, O. Matherny, A. Bullington, M. Schrempel, L. Bogue, S. Gossler, A. Ageev, Shinji Miyoki, Badri Krishnan, Antony C. Searle, B. Barr, J. Worden, C. A. Cantley, Benjamin William Allen, Karsten Danzmann, M. C. Sumner, Y. Hefetz, Gerhard Heinzel, C. Hardham, Laura Cadonati, Chunglee Kim, W. R. Johnston, J. G. Rollins, C. Aulbert, H. Ward, B. F. Whiting, Joseph M. Kovalik, Peter Aufmuth, D. Farnham, Benno Willke, I. Leonor, Susan M. Scott, Teviet Creighton, R. Riesen, Herbert Walther, Roland Schilling, R. Taylor, V. Chickarmane, T. Delker, Alessandra Buonanno, B. Lantz, S. Meshkov, K. Kötter, V. Schmidt, Erika D'Ambrosio, R. Davies, R. Bennett, William E. Butler, P. Ehrens, S. Traeger, M. Ito, V. Leonhardt, Albrecht Rüdiger, F. Nocera, Martin Hewitson, Alicia M. Sintes, J. Logan, R. K. Nayak, Walter Winkler, C. A. Shapiro, M. MacInnis, D. Redding, A. Ivanov, B. Bland-Weaver, Lindon J. Robison, H. Radkins, Harald Lück, P. Williams, B. Bhawal, Martin P McHugh, B. Mours, M. H. P. M. van Putten, Curt Cutler, S. Tilav, D. Jungwirth, P. Hoang, Peter H. Sneddon, J. D. E. Creighton, Kip S. Thorne, M. Hrynevych, Helena Armandula, E. J. Elliffe, Roy Williams, R. Rahkola, S. P. Vyachanin, W. Tyler, Peter Fritschel, Scott Koranda, E. J. Daw, K. S. Ganezer, T. Etzel, U. Weiland, J. Mason, J. E. Brau, M. R. Smith, L. Matone, Raymond G. Beausoleil, R. Balasubramanian, I. Salzman, D. Churches, K. Watts, M. C. Araya, E. Maros, V. P. Mitrofanov, R. M. S. Schofield, Robert J. McCarthy, A. Sibley, Linqing Wen, G. Traylor, B. Sears, Thomas Corbitt, Timothy Evans, R. Coldwell, D. Sigg, S. W. Ballmer, F. Asiri, P. Schwinberg, E. Rotthoff, M. A. Barton, K. Kawabe, A. M. Gretarsson, Rana X. Adhikari, K. T. Reilly, P. Csatorday, M. V. Plissi, D.B. DeBra, D. Webber, Benjamin J. Owen, Akiteru Takamori, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Black, M. Mageswaran, Kevin C. Schlaufman, Sheila Rowan, Martin M. Fejer, Éanna É. Flanagan, B. Machenschalk, Herbert Welling, S. Wise, Joseph D. Romano, M. Hammond, Nergis Mavalvala, J. R. Smith, S. Grunewald, R. Bork, N. A. Robertson, C. King, K. V. Tokmakov, G. Moreno, Kasem Mossavi, A. Gillespie, H. Tariq, T. Nash, A. Sazonov, M. W.E. Smith, J. Kern, Hartmut Grote, V. Parameswariah, S. E. Whitcomb, B. C. Barish, L. Jones, G. Mendell, Soma Mukherjee, D. H. Shoemaker, Kenneth G. Libbrecht, R. DeSalvo, David Crooks, D. B. Kozak, C. Vorvick, Sanichiro Yoshida, C. Parameswariah, P. E. Lindquist, C. Torres, J. Langdale, G. P. Newton, P. Kloevekorn, A. Chandler, A. J. Weinstein, J. A. Giaime, Eric K. Gustafson, M. Fyffe, Kevin M. Ryan, Gabriela Gonzalez, D. Barker, B. J. Cusack, Graham Woan, G. H. Sanders, R. Lawrence, Robert L. Byer, T. T. Lyons, S. Roddy, W. G. Anderson, B. Bochner, Peter Shawhan, Kenneth A. Strain, A. Weidner, Richard L. Savage, M. Landry, M. Tibbits, B. P. Abbott, Massimo Tinto, J. H. Hough, V. V. Frolov, M. Rakhmanov, Bernard F. Schutz, B. O'Reilly, Lee Samuel Finn, S. Vass, S. R. Rao, Shigeo Nagano, D. Chin, Stanislav Babak, Walid A. Majid, C. N. Colacino, G. Stapfer, W. Kells, M. Barnes, Julien Sylvestre, Duncan A. Brown, Jeffrey A. Edlund, H. Overmier, D. Busby, Douglas R. Cook, J. Hanson, P. McNamara, S. Seel, Guido Mueller, L. Wallace, S. Penn, Alberto Vecchio, Brent Ware, S. Berukoff, C. Messenger, A. Grant, S. Liu, R. Frey, L. Zhang, T. Olson, W. Hua, Keisuke Goda, V. Kalogera, R. Burgess, Kevin M. Carter, Pamela J. Russell, S. Richman, Erik Katsavounidis, S. B. Anderson, Oliver Jennrich, P. J. King, D. Grimmett, Philip Nutzman, M. J. Lubinski, A. Rizzi, David B. Tanner, D. I. Robertson, Vladimir B. Braginsky, K. Riles, M. Coles, M. Guenther, A. G. Wiseman, M. W. Regehr, A. Marin, J. Betzwieser, T. Summerscales, Adrian C. Ottewill, Yousuke Itoh, J. Heefner, M. Pedraza, K. Mailand, G. Billingsley, D. Ugolini, Carsten Fallnich, Krzysztof Belczynski, D. C. Coyne, H. Yamamoto, R. Mittleman, Nelson Christensen, A. Hartunian, Maria Alessandra Papa, Patrick Brady, I. Yakushin, N. Hindman, Seiji Kawamura, Guenakh Mitselmakher, Kent Blackburn, Michele Vallisneri, W. O. Hamilton, Ik Siong Heng, Kenneth D. Skeldon, S. Killbourn, D. Ouimette, S. Márka, R. J. Dupuis, Osamu Miyakawa, David H. Reitze, Christian J. Killow, L. Sievers, Gregory M. Harry, M. Lei, Philippe Grandclément, P. J. Sutton, Haisheng Rong, Gianpietro Cagnoli, A. Khan, Virginio Sannibale, David E. McClelland, Morag M. Casey, M. Heurs, B. J. Winjum, J. Myers, C. Ebeling, Suvadeep Bose, Robert Spero, Soumya D. Mohanty, N. Zotov, K. Mason, Sanjeev Dhurandhar, James Whelan, H. Ding, Xavier Siemens, C. Gray, Yi Chen, M. Hennessy, Q. Z. Shu, J. H. Romie, K. Bayer, F. J. Raab, R. Gustafson, R. Amin, C. Barker-Patton, S. Chatterji, F. Mann, J. Zweizig, J. Chapsky, S. Brozek, H. Naundorf, S. Wen, A. L. Stuver, J. Castiglione, P. Charlton, I. A. Bilenko, Ian Taylor, David J. Ottaway, N. Hepler, Peter R. Saulson, R. Abbott, and Jordan Camp

Subjects
Physics, Nuclear and High Energy Physics, Gravitational-wave observatory, 010308 nuclear & particles physics, Gravitational wave, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, 01 natural sciences, Gravitational-wave astronomy, Binary pulsar, LIGO, General Relativity and Quantum Cosmology, Neutron star, Pulsar, Frequency domain, 0103 physical sciences, 010303 astronomy & astrophysics
Abstract

Data collected by the GEO 600 and LIGO interferometric gravitational wave detectors during their first observational science run were searched for continuous gravitational waves from the pulsar J1939+2134 at twice its rotation frequency. Two independent analysis methods were used and are demonstrated in this paper: a frequency domain method and a time domain method. Both achieve consistent null results, placing new upper limits on the strength of the pulsar’s gravitational wave emission. A model emission mechanism is used to interpret the limits as a constraint on the pulsar’s equatorial ellipticity.

Published
2004
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38. Evolution of robustness in digital organisms

Author

Christoph Adami and Jeffrey A. Edlund

Subjects
Genetics, High rate, Mutation rate, Genomic Library, Computers, Robustness (evolution), Computational biology, Biological evolution, Biology, Genome, Biological Evolution, General Biochemistry, Genetics and Molecular Biology, Artificial Intelligence, Epistasis, Computer Simulation
Abstract

We study the evolution of robustness in digital organisms adapting to a high mutation rate. As genomes adjust to the harsh mutational environment, the mean effect of single mutations decreases, up until the point where a sizable fraction (up to 30% in many cases) of the mutations are neutral. We correlate the changes in robustness along the line of descent to changes in directional epistasis, and find that increased robustness is achieved by moving from antagonistic epistasis between mutations towards codes where mutations are, on average, independent. We interpret this recoding as a breakup of linkage between vital sections of the genome, up to the point where instructions are maximally independent of each other. While such a recoding often requires sacrificing some replication speed, it is the best strategy for withstanding high rates of mutation.

Published
2004

39. Detector description and performance for the first coincidence observations between LIGO and GEO

Author

T. Etzel, H. Ward, I. Leonor, Walter Winkler, H. Tariq, P. Schwinberg, D. Webber, Harald Lück, M. MacInnis, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, D. Farnham, T. Regimbau, E. Black, Martin M. Fejer, J. R. Smith, R. Bork, Peter H. Sneddon, B. Lantz, A. Heptonstall, M. Malec, T. Nash, Roy Williams, K. Kawabe, M. Mageswaran, O. Matherny, J. H. Romie, A. Sazonov, V. Schmidt, R. Davies, R. Bennett, William E. Butler, K. Reithmaier, Andreas Freise, Matthew Pitkin, E. Rotthoff, Q. Z. Shu, A. Wilson, R. Wooley, Shinji Miyoki, C. Aulbert, I. Zawischa, J. A. Giaime, Robert J. McCarthy, Eric K. Gustafson, A. Marin, B. Bochner, Phil Willems, M. R. Smith, B. Barr, J. Worden, D. M. Strom, P. Ehrens, Albrecht Rüdiger, Martin P McHugh, Keisuke Goda, Massimo Tinto, Erik Katsavounidis, M. J. Lubinski, K. S. Ganezer, K. Watts, Stefan Goßler, Linqing Wen, Y. Hefetz, S. Roddy, S. Nagano, M. H. P. M. van Putten, S. Tilav, D. Redding, Peter Aufmuth, E. J. Daw, I. Salzman, Joseph D. Romano, Rana X. Adhikari, B. Machenschalk, K. Bayer, C. King, Adrian C. Ottewill, P. Hoang, N. Hepler, V. Chickarmane, R. Riesen, Roland Schilling, Vladimir B. Braginsky, C. A. Shapiro, K. Riles, A. Gillespie, Kasem Mossavi, R. M. S. Schofield, Albert Lazzarini, E. Maros, Timothy Evans, B. Bland-Weaver, K. T. Reilly, C. A. Cantley, Benjamin William Allen, R. Coldwell, Gerhard Heinzel, C. Hardham, Benno Willke, K. Mailand, Kevin C. Schlaufman, N. A. Robertson, H. Naundorf, Benjamin J. Owen, L. Jones, Krzysztof Belczynski, C. Gray, G. H. Sanders, R. Lawrence, Karsten Danzmann, M. C. Sumner, M. Lormand, D. Sigg, S. W. Ballmer, M. Fine, Bernard F. Whiting, R. Mittleman, L. Bogue, Nelson Christensen, Alessandra Buonanno, Yousuke Itoh, A. Chandler, Kevin M. Ryan, Richard J. Abbott, K. V. Tokmakov, Gianpietro Cagnoli, G. Moreno, A. Hartunian, B. Bhawal, S. Penn, Erika D'Ambrosio, S. Chatterji, H. Yamamoto, Laura Cadonati, S. Wise, A. J. Weinstein, V. V. Frolov, S. Grunewald, Badri Krishnan, Herbert Welling, Nergis Mavalvala, B. C. Barish, Richard Ingley, J. Zweizig, F. Asiri, J. G. Rollins, T. T. Lyons, H. Overmier, W. O. Hamilton, Kenneth D. Skeldon, Pamela J. Russell, S. Richman, Antony C. Searle, V. Leonhardt, T. Delker, R. DeSalvo, S. Killbourn, David Crooks, James Whelan, H. Ding, Sergey P. Vyatchanin, M. Landry, Scott Koranda, Oliver Jennrich, A. Bullington, D. Chin, Susan M. Scott, S. E. Whitcomb, Kenneth G. Libbrecht, Teviet Creighton, B. Mours, J. Betzwieser, D. B. Kozak, Stanislav Babak, J. Myers, Walid A. Majid, Herbert Walther, L. Matone, C. Vorvick, M. Schrempel, Kip S. Thorne, W. R. Johnston, S. J. Berukoff, Joseph M. Kovalik, Duncan A. Brown, K. Kötter, J. H. Hough, S. Brozek, Peter R. Saulson, Robert Spero, Soumya D. Mohanty, N. Zotov, R. Taylor, Douglas R. Cook, A. Rizzi, D. Ugolini, Carsten Fallnich, F. Raab, G. Mueller, K. Mason, Richard L. Savage, Michael E Zucker, S. Seel, J. Logan, R. K. Nayak, Brent Ware, C. Ebeling, Suvadeep Bose, Curt Cutler, M. Coles, M. Guenther, R. Rahkola, A. Grant, S. Liu, W. G. Anderson, V. P. Mitrofanov, Jeffrey A. Edlund, F. Nocera, Martin Hewitson, Kevin M. Carter, Alicia M. Sintes, Peter Shawhan, L. Zhang, G. Mendell, A. Sibley, Lindon J. Robison, R. Burgess, Alberto Vecchio, M. Tibbits, B. P. Abbott, S. B. Anderson, C. Colacino, M. C. Araya, T. Summerscales, Xavier Siemens, D. I. Robertson, Patrick Brady, David H. Shoemaker, S. Vass, David B. Tanner, Yi Chen, Helena Armandula, E. J. Elliffe, J. Heefner, Éanna É. Flanagan, R. Amin, M. Hennessy, M. W. Regehr, M. Hrynevych, S. Traeger, Marco Aurelio Diaz, C. Parameswariah, C. Barker-Patton, Peter Fritschel, U. Weiland, W. Kells, Kenneth A. Strain, A. Weidner, Gregory M. Harry, D. Busby, F. Mann, A. L. Stuver, M. Pedraza, Soma Mukherjee, M. Lei, J. Langdale, B. O'Reilly, N. Hindman, Maria Alessandra Papa, B. Sears, T. Olson, M. Fyffe, Gabriela Gonzalez, Michele Vallisneri, Ik Siong Heng, D. Rose, Kent Blackburn, S. Márka, G. Billingsley, D. Ouimette, G. Traylor, Vicky Kalogera, P. Csatorday, R. J. Dupuis, A. Khan, Thomas Corbitt, Akiteru Takamori, Sanichiro Yoshida, M. V. Plissi, J. Chapsky, J. Castiglione, P. Charlton, Graham Woan, Virginio Sannibale, Hartmut Grote, David E. McClelland, D. Barker, Robert L. Byer, D. Jungwirth, Philippe Grandclément, I. A. Bilenko, Ian Taylor, P. J. Sutton, Haisheng Rong, M. Rakhmanov, J. Mason, Morag M. Casey, P. E. Lindquist, David J. Ottaway, M. Heurs, B. J. Winjum, Bernard F. Schutz, Rainer Weiss, M. Ito, Seiji Kawamura, C. Messenger, G. Stapfer, R. W. P. Drever, P. Kloevekorn, J. Hanson, W. Hua, W. W. Johnson, S. Wen, Jordan Camp, A. S. Sengupta, G. Newton, Osamu Miyakawa, David H. Reitze, Christian J. Killow, Lee Samuel Finn, M. R. Pratt, Matthew Evans, L. Cardenas, S. Klimenko, R. Balasubramanian, M. Barnes, Julien Sylvestre, B. J. Cusack, P. McNamara, S. R. Rao, L. Wallace, R. Frey, R. Gustafson, P. J. King, D. Grimmett, Philip Nutzman, M. A. Barton, V. Parameswariah, D.B. DeBra, A. G. Wiseman, M. Hammond, Jolien D. E. Creighton, M. W.E. Smith, J. Kern, C. Torres, Chunglee Kim, D. C. Coyne, S. Dhurandar, A. Ivanov, H. Radkins, W. Tyler, I. Yakushin, Raymond G. Beausoleil, Guenakh Mitselmakher, L. Sievers, J. E. Brau, D. Churches, A. M. Gretarsson, Sheila Rowan, A. Ageev, C. I. Torrie, P. R. Williams, and S. Meshkov

Subjects
Physics, 010308 nuclear & particles physics, Gravitational wave, Detector, FOS: Physical sciences, Astronomy, General Relativity and Quantum Cosmology (gr-qc), General Medicine, Astrophysics, Interference (wave propagation), 01 natural sciences, General Relativity and Quantum Cosmology, LIGO, Coincidence, Interferometry, Observatory, 0103 physical sciences, 010306 general physics, QC, LIGO Scientific Collaboration
Abstract

For 17 days in August and September 2002, the LIGO and GEO interferometer gravitational wave detectors were operated in coincidence to produce their first data for scientific analysis. Although the detectors were still far from their design sensitivity levels, the data can be used to place better upper limits on the flux of gravitational waves incident on the earth than previous direct measurements. This paper describes the instruments and the data in some detail, as a companion to analysis papers based on the first data., 41 pages, 9 figures 17 Sept 03: author list amended, minor editorial changes

Published
2004

40. Analysis of First LIGO Science Data for Stochastic Gravitational Waves

Author

P. Ehrens, S. Traeger, Erika D'Ambrosio, Morag M. Casey, M. Heurs, B. J. Winjum, Timothy Evans, R. Coldwell, D. Sigg, S. W. Ballmer, G. Moreno, David H. Shoemaker, A. Gillespie, David Crooks, J. Logan, R. K. Nayak, N. Hindman, R. Amin, Alberto Vecchio, C. Barker-Patton, F. Mann, Peter Fritschel, Keisuke Goda, Erik Katsavounidis, S. Penn, Pamela J. Russell, S. Richman, Oliver Jennrich, E. Rotthoff, R. Rahkola, H. Ward, A. Ivanov, H. Radkins, S. P. Vyachanin, J. Betzwieser, B. Sears, Vicky Kalogera, M. J. Lubinski, M. A. Barton, W. Tyler, Szabolcs Marka, W. R. Johnston, Rana X. Adhikari, B. Machenschalk, R. Taylor, D. Ugolini, Carsten Fallnich, J. Kovalik, G. Mendell, F. Asiri, Kip S. Thorne, J. Chapsky, J. Heefner, Raymond G. Beausoleil, A. Rizzi, Gerhard Heinzel, C. Hardham, Benno Willke, D. Farnham, Robert Spero, Soumya D. Mohanty, N. Zotov, A. M. Gretarsson, Badri Krishnan, Antony C. Searle, D.B. DeBra, K. Mason, T. Summerscales, Gregory M. Harry, M. Lei, T. Olson, Sanjeev Dhurandhar, C. Parameswariah, Sheila Rowan, V. Schmidt, B. Mours, Lindon J. Robison, J. Mason, Vladimir B. Braginsky, K. Riles, R. Balasubramanian, Alessandra Buonanno, M. MacInnis, B. F. Whiting, L. Jones, A. Khan, V. P. Mitrofanov, Peter R. Saulson, Michael Landry, R. Davies, R. Bennett, William E. Butler, M. Hammond, U. Weiland, J. Langdale, M. Fyffe, C. Gray, M. C. Araya, Helena Armandula, Albrecht Rüdiger, Virginio Sannibale, M. Ito, Walter Winkler, Peter H. Sneddon, David E. McClelland, E. J. Elliffe, Harald Lück, G. Billingsley, Martin P McHugh, G. Traylor, M. R. Smith, M. H. P. M. van Putten, M. W.E. Smith, J. Kern, Thomas Corbitt, Albert Lazzarini, P. R. Williams, Sanichiro Yoshida, W. Hua, Gabriela Gonzalez, A. Ageev, Graham Woan, Robert L. Byer, Xavier Siemens, Adrian C. Ottewill, Yousuke Itoh, S. Tilav, Jolien D. E. Creighton, Michele Vallisneri, Michael E Zucker, Ik Siong Heng, C. A. Shapiro, M. Rakhmanov, Akiteru Takamori, J. E. Brau, K. Mailand, E. Maros, Krzysztof Belczynski, H. Overmier, B. Bland-Weaver, Bernard F. Schutz, Yi Chen, R. Mittleman, D. Churches, Nelson Christensen, M. Hennessy, Q. Z. Shu, A. Hartunian, Chunglee Kim, G. Stapfer, J. Hanson, A. L. Stuver, T. Etzel, B. Bochner, A. Wilson, Massimo Tinto, Guido Mueller, O. Matherny, R. J. Dupuis, A. Chandler, Laura Cadonati, D. Ouimette, J. H. Romie, K. Bayer, J. G. Rollins, Kevin M. Ryan, B. Barr, S. Nagano, B. Lantz, J. Worden, D. Redding, P. Schwinberg, R. DeSalvo, J. Castiglione, P. Charlton, F. J. Raab, V. Parameswariah, M. Coles, M. Guenther, Scott Koranda, L. Matone, Philippe Grandclément, S. Meshkov, P. J. Sutton, Haisheng Rong, I. Salzman, V. Leonhardt, D. Webber, K. Kawabe, R. Gustafson, T. Delker, Susan M. Scott, Teviet Creighton, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, E. Black, H. Tariq, D. Jungwirth, P. Hoang, R. M. S. Schofield, Benjamin J. Owen, I. A. Bilenko, Ian Taylor, C. Torres, S. Chatterji, Shinji Miyoki, Herbert Walther, Martin M. Fejer, J. R. Smith, R. Bork, Marco Aurelio Diaz, M. Mageswaran, K. Reithmaier, T. Nash, A. Sibley, Andreas Freise, K. V. Tokmakov, David J. Ottaway, R. Riesen, K. Kötter, Matthew Pitkin, A. Sazonov, R. Wooley, N. Hepler, Patrick Brady, C. Messenger, J. Zweizig, C. A. Cantley, A. J. Weinstein, S. Brozek, Curt Cutler, G. H. Sanders, R. Lawrence, Richard L. Savage, D. B. Kozak, Robert J. McCarthy, Roland Schilling, C. Vorvick, Benjamin William Allen, I. Zawischa, Linqing Wen, F. Nocera, Martin Hewitson, C. Aulbert, P. Kloevekorn, Karsten Danzmann, M. C. Sumner, Seiji Kawamura, V. V. Frolov, J. A. Giaime, Eric K. Gustafson, T. Regimbau, Y. Hefetz, C. I. Torrie, A. Heptonstall, M. Malec, A. Grant, S. Liu, S. Wen, W. G. Anderson, Joseph D. Romano, D. Chin, C. King, Gianpietro Cagnoli, Phil Willems, Peter Shawhan, Jeffrey A. Edlund, M. Tibbits, B. P. Abbott, T. T. Lyons, L. Zhang, Kasem Mossavi, Osamu Miyakawa, David H. Reitze, Christian J. Killow, Stanislav Babak, Walid A. Majid, S. Vass, Duncan A. Brown, D. M. Strom, Richard J. Abbott, W. Kells, D. Busby, Brent Ware, R. Burgess, J. Myers, C. Ebeling, Suvadeep Bose, S. Wise, S. Grunewald, M. Hrynevych, D. I. Robertson, Kenneth G. Libbrecht, Roy Williams, K. S. Ganezer, K. Watts, S. E. Whitcomb, Stefan Goßler, K. T. Reilly, Kevin C. Schlaufman, Herbert Welling, Nergis Mavalvala, S. J. Berukoff, Kevin M. Carter, S. B. Anderson, David B. Tanner, M. W. Regehr, A. Marin, M. Pedraza, Maria Alessandra Papa, Kent Blackburn, N. A. Robertson, I. Leonor, E. J. Daw, D. Rose, Rainer Weiss, R. W. P. Drever, W. W. Johnson, M. Lormand, M. Fine, Richard Ingley, A. Bullington, M. Schrempel, L. Bogue, Jordan Camp, A. S. Sengupta, G. Newton, M. R. Pratt, Matthew Evans, L. Cardenas, S. Klimenko, C. Colacino, Kenneth A. Strain, A. Weidner, B. O'Reilly, Peter Aufmuth, V. Chickarmane, H. Naundorf, B. Bhawal, P. Csatorday, M. V. Plissi, Hartmut Grote, P. E. Lindquist, Soma Mukherjee, H. Yamamoto, W. O. Hamilton, Kenneth D. Skeldon, S. Killbourn, James Whelan, H. Ding, J. H. Hough, Douglas R. Cook, S. Seel, I. Yakushin, Guenakh Mitselmakher, Flanagan, L. Sievers, M. Barnes, Julien Sylvestre, P. McNamara, L. Wallace, R. Frey, P. J. King, D. Grimmett, Philip Nutzman, A. G. Wiseman, D. C. Coyne, D. Barker, S. Roddy, A. M. Sintes, Lee Samuel Finn, B. C. Barish, B. J. Cusack, S. R. Rao, and The LIGO Scientific Collaboration

Subjects
Nuclear and High Energy Physics, Gravitational-wave observatory, Frequency band, interferometer, FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, General Relativity and Quantum Cosmology, 0103 physical sciences, ddc:530, Limit (mathematics), 010306 general physics, QC, Physics, detector, 010308 nuclear & particles physics, Gravitational wave, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Spectral density, LIGO, laser, radiation, Interferometry, Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik, upper limit
Abstract

We present the analysis of between 50 and 100 hrs of coincident interferometric strain data used to search for and establish an upper limit on a stochastic background of gravitational radiation. These data come from the first LIGO science run, during which all three LIGO interferometers were operated over a 2-week period spanning August and September of 2002. The method of cross-correlating the outputs of two interferometers is used for analysis. We describe in detail practical signal processing issues that arise when working with real data, and we establish an observational upper limit on a f^{-3} power spectrum of gravitational waves. Our 90% confidence limit is Omega_0 h_{100}^2 < 23 in the frequency band 40 to 314 Hz, where h_{100} is the Hubble constant in units of 100 km/sec/Mpc and Omega_0 is the gravitational wave energy density per logarithmic frequency interval in units of the closure density. This limit is approximately 10^4 times better than the previous, broadband direct limit using interferometric detectors, and nearly 3 times better than the best narrow-band bar detector limit. As LIGO and other worldwide detectors improve in sensitivity and attain their design goals, the analysis procedures described here should lead to stochastic background sensitivity levels of astrophysical interest., 26 pages, 17 figures

Published
2003
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