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Evidence for a low-frequency stochastic gravitational wave background has recently been reported based on analyses of pulsar timing array data. The most likely source of such a background is a population of supermassive black hole binaries,…
高能天体物理现象 · 物理学
2023-07-26
Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Paul T. Baker , Bence Bécsy , Laura Blecha , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Robin Case , J. Andrew Casey-Clyde , Maria Charisi , Shami Chatterjee , Tyler Cohen , James M. Cordes , Neil Cornish , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Megan DeCesar , Paul B. Demorest , Matthew C. Digman , Timothy Dolch , Brendan Drachler , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel Freedman , Nathaniel Garver-Daniels , Peter Gentile , Joseph Glaser , Deborah Good , Kayhan Gültekin , Jeffrey Hazboun , Sophie Hourihane , Ross Jennings , Aaron D. Johnson , Megan Jones , Andrew R. Kaiser , David Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey Key , Nima Laal , Michael Lam , William G. Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Tingting Liu , Duncan R. Lorimer , Jing Santiago Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin Madison , Alexander McEwen , James W. McKee , Maura McLaughlin , Natasha McMann , Bradley W. Meyers , Patrick M. Meyers , Chiara M. F. Mingarelli , andrea mitridate , priya natarajan , Cherry Ng , David Nice , Stella Koch Ocker , Ken Olum , Timothy T. Pennucci , Benetge Perera , Polina Petrov , Nihan Pol , Henri A. Radovan , Scott Ransom , Paul S. Ray , Joseph Romano , Shashwat C. Sardesai , Ann Schmiedekamp , Carl Schmiedekamp , Kai Schmitz , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Magdalena Siwek , Ingrid Stairs , Dan Stinebring , Kevin Stovall , Abhimanyu Susobhanan , Joseph Swiggum , Jacob Taylor , Stephen Taylor , Jacob E. Turner , Caner Unal , Michele Vallisneri , Rutger van Haasteren , Sarah J. Vigeland , Haley M. Wahl , Caitlin Witt , Olivia Young
Pulsar timing array collaborations, such as the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), are seeking to detect nanohertz gravitational waves emitted by supermassive black hole binaries formed in the aftermath…
星系天体物理 · 物理学
2023-08-02
Zaven Arzoumanian , Paul T. Baker , Laura Blecha , Harsha Blumer , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Bence Bécsy , J. Andrew Casey-Clyde , Maria Charisi , Shami Chatterjee , Siyuan Chen , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Megan E. DeCesar , Paul B. Demorest , Timothy Dolch , Brendan Drachler , Justin A. Ellis , E. C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Nathan Garver-Daniels , Peter A. Gentile , Joseph Glaser , Deborah C. Good , Kayhan Gültekin , Jeffrey S. Hazboun , Ross J. Jennings , Aaron D. Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Joey Shapiro Key , Nima Laal , Michael T. Lam , William G Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Tingting Liu , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Dustin R. Madison , Alexander McEwen , Maura A. McLaughlin , Chiara M. F. Mingarelli , Cherry Ng , David J. Nice , Stella Koch Ocker , Ken D. Olum , Timothy T. Pennucci , Nihan S. Pol , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Magdalena Siwek , Renée Spiewak , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Joseph K. Swiggum , Jessica Sydnor , Stephen R. Taylor , Jacob E. Turner , Michele Vallisneri , Sarah J. Vigeland , Haley M. Wahl , Gregory Walsh , Caitlin A. Witt , Olivia Young
Pulsar timing arrays recently found evidence for a gravitational wave background (GWB), likely the stochastic overlap of GWs from many supermassive black hole binaries. Anticipating a continuous gravitational wave (CW) detection from a…
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) project currently observes 43 pulsars using the Green Bank and Arecibo radio telescopes. In this work we use a subset of 17 pulsars timed for a span of roughly five…
星系天体物理 · 物理学
2015-06-19
Z. Arzoumanian , A. Brazier , S. Burke-Spolaor , S. J. Chamberlin , S. Chatterjee , J. M. Cordes , P. B. Demorest , X. Deng , T. Dolch , J. A. Ellis , R. D. Ferdman , N. Garver-Daniels , F. Jenet , G. Jones , V. M. Kaspi , M. Koop , M. Lam , T. J. W. Lazio , A. N. Lommen , D. R. Lorimer , J. Luo , R. S. Lynch , D. R. Madison , M. McLaughlin , S. T. McWilliams , D. J. Nice , N. Palliyaguru , T. T. Pennucci , S. M. Ransom , A. Sesana , X. Siemens , I. H. Stairs , D. R. Stinebring , K. Stovall , J. Swiggum , M. Vallisneri , R. van Haasteren , Y. Wang , W. W. Zhu
The NANOGrav 15-year data set shows evidence for the presence of a low-frequency gravitational-wave background (GWB). While many physical processes can source such low-frequency gravitational waves, here we analyze the signal as coming from…
高能天体物理现象 · 物理学
2023-08-09
Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Paul T. Baker , Bence Bécsy , Laura Blecha , Alexander Bonilla , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Rand Burnette , Robin Case , J. Andrew Casey-Clyde , Maria Charisi , Shami Chatterjee , Katerina Chatziioannou , Belinda D. Cheeseboro , Siyuan Chen , Tyler Cohen , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Curt J. Cutler , Daniel J. D'Orazio , Megan E. DeCesar , Dallas DeGan , Paul B. Demorest , Heling Deng , Timothy Dolch , Brendan Drachler , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Emiko Gardiner , Nate Garver-Daniels , Peter A. Gentile , Kyle A. Gersbach , Joseph Glaser , Deborah C. Good , Kayhan Gültekin , Jeffrey S. Hazboun , Sophie Hourihane , Kristina Islo , Ross J. Jennings , Aaron Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey S. Key , Nima Laal , Michael T. Lam , William G. Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Tyson B. Littenberg , Tingting Liu , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Alexander McEwen , James W. McKee , Maura A. McLaughlin , Natasha McMann , Bradley W. Meyers , Patrick M. Meyers , Chiara M. F. Mingarelli , Andrea Mitridate , Priyamvada Natarajan , Cherry Ng , David J. Nice , Stella Koch Ocker , Ken D. Olum , Timothy T. Pennucci , Benetge B. P. Perera , Polina Petrov , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Jessie C. Runnoe , Shashwat C. Sardesai , Ann Schmiedekamp , Carl Schmiedekamp , Kai Schmitz , Levi Schult , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Magdalena S. Siwek , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Jerry P. Sun , Abhimanyu Susobhanan , Joseph K. Swiggum , Jacob Taylor , Stephen R. Taylor , Jacob E. Turner , Caner Unal , Michele Vallisneri , Sarah J. Vigeland , Jeremy M. Wachter , Haley M. Wahl , Qiaohong Wang , Caitlin A. Witt , David Wright , Olivia Young
NANOGrav, EPTA, PPTA, and CPTA have announced the evidence for a stochastic signal from their latest data sets. Supermassive black hole binaries (SMBHBs) are supposed to be the most promising gravitational-wave (GW) sources of pulsar timing…
Observations indicate that nearly all galaxies contain supermassive black holes (SMBHs) at their centers. When galaxies merge, their component black holes form SMBH binaries (SMBHBs), which emit low-frequency gravitational waves (GWs) that…
星系天体物理 · 物理学
2019-09-30
K. Aggarwal , Z. Arzoumanian , P. T. Baker , A. Brazier , M. R. Brinson , P. R. Brook , S. Burke-Spolaor , S. Chatterjee , J. M. Cordes , N. J. Cornish , F. Crawford , K. Crowter , H. T. Cromartie , M. DeCesar , P. B. Demorest , T. Dolch , J. A. Ellis , R. D. Ferdman , E. Ferrara , E. Fonseca , N. Garver-Daniels , P. Gentile , J. S. Hazboun , A. M. Holgado , E. A. Huerta , K. Islo , R. Jennings , G. Jones , M. L. Jones , A. R. Kaiser , D. L. Kaplan , L. Z. Kelley , J. S. Key , M. T. Lam , T. J. W. Lazio , L. Levin , D. R. Lorimer , J. Luo , R. S. Lynch , D. R. Madison , M. A. McLaughlin , S. T. McWilliams , C. M. F. Mingarelli , C. Ng , D. J. Nice , T. T. Pennucci , N. S. Pol , S. M. Ransom , P. S. Ray , X. Siemens , J. Simon , R. Spiewak , I. H. Stairs , D. R. Stinebring , K. Stovall , J. Swiggum , S. R. Taylor , J. E. Turner , M. Vallisneri , R. van Haasteren , S. J. Vigeland , C. A. Witt , W. W. Zhu
The radio galaxy 3C 66B has been hypothesized to host a supermassive black hole binary (SMBHB) at its center based on electromagnetic observations. Its apparent 1.05-year period and low redshift ($\sim0.02$) make it an interesting testbed…
高能天体物理现象 · 物理学
2024-10-29
Gabriella Agazie , Zaven Arzoumanian , Paul T. Baker , Bence Bécsy , Laura Blecha , Harsha Blumer , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , J. Andrew Casey-Clyde , Maria Charisi , Shami Chatterjee , Belinda D. Cheeseboro , Tyler Cohen , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Megan E. DeCesar , Paul B. Demorest , Lankeswar Dey , Timothy Dolch , Justin A. Ellis , Robert D. Ferdman , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Nate Garver-Daniels , Peter A. Gentile , Joseph Glaser , Deborah C. Good , Achamveedu Gopakumar , Kayhan Gültekin , Jeffrey S. Hazboun , Ross J. Jennings , Aaron D. Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Joey S. Key , Nima Laal , Michael T. Lam , William G. Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Tingting Liu , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Alexander McEwen , James W. McKee , Maura A. McLaughlin , Patrick M. Meyers , Chiara M. F. Mingarelli , Andrea Mitridate , Cherry Ng , David J. Nice , Stella Koch Ocker , Ken D. Olum , Timothy T. Pennucci , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Shashwat C. Sardesai , Kai Schmitz , Xavier Siemens , Joseph Simon , Magdalena S. Siwek , Sophia V. Sosa Fiscella , Renée Spiewak , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Abhimanyu Susobhanan , Joseph K. Swiggum , Stephen R. Taylor , Jacob E. Turner , Caner Unal , Michele Vallisneri , Sarah J. Vigeland , Caitlin A. Witt , Olivia Young
The 15-year pulsar timing data set collected by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) shows positive evidence for the presence of a low-frequency gravitational-wave (GW) background. In this paper, we…
高能天体物理现象 · 物理学
2023-06-29
Adeela Afzal , Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Paul T. Baker , Bence Bécsy , Jose Juan Blanco-Pillado , Laura Blecha , Kimberly K. Boddy , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Rand Burnette , Robin Case , Maria Charisi , Shami Chatterjee , Katerina Chatziioannou , Belinda D. Cheeseboro , Siyuan Chen , Tyler Cohen , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Curt J. Cutler , Megan E. DeCesar , Dallas DeGan , Paul B. Demorest , Heling Deng , Timothy Dolch , Brendan Drachler , Richard von Eckardstein , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Nate Garver-Daniels , Peter A. Gentile , Kyle A. Gersbach , Joseph Glaser , Deborah C. Good , Lydia Guertin , Kayhan Gültekin , Jeffrey S. Hazboun , Sophie Hourihane , Kristina Islo , Ross J. Jennings , Aaron D. Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey S. Key , Nima Laal , Michael T. Lam , William G. Lamb , T. Joseph W. Lazio , Vincent S. H. Lee , Natalia Lewandowska , Rafael R. Lino dos Santos , Tyson B. Littenberg , Tingting Liu , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Alexander McEwen , James W. McKee , Maura A. McLaughlin , Natasha McMann , Bradley W. Meyers , Patrick M. Meyers , Chiara M. F. Mingarelli , Andrea Mitridate , Jonathan Nay , Priyamvada Natarajan , Cherry Ng , David J. Nice , Stella Koch Ocker , Ken D. Olum , Timothy T. Pennucci , Benetge B. P. Perera , Polina Petrov , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Shashwat C. Sardesai , Ann Schmiedekamp , Carl Schmiedekamp , Kai Schmitz , Tobias Schröder , Levi Schult , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Magdalena S. Siwek , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Peter Stratmann , Jerry P. Sun , Abhimanyu Susobhanan , Joseph K. Swiggum , Jacob Taylor , Stephen R. Taylor , Tanner Trickle , Jacob E. Turner , Caner Unal , Michele Vallisneri , Sonali Verma , Sarah J. Vigeland , Haley M. Wahl , Qiaohong Wang , Caitlin A. Witt , David Wright , Olivia Young , Kathryn M. Zurek
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has reported evidence for the presence of an isotropic nanohertz gravitational wave background (GWB) in its 15 yr dataset. However, if the GWB is produced by a…
高能天体物理现象 · 物理学
2023-06-30
Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Paul T. Baker , Bence Bécsy , Laura Blecha , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , J. Andrew Casey-Clyde , Maria Charisi , Shami Chatterjee , Tyler Cohen , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Megan E. DeCesar , Paul B. Demorest , Timothy Dolch , Brendan Drachler , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Emiko Gardiner , Nate Garver-Daniels , Peter A. Gentile , Joseph Glaser , Deborah C. Good , Kayhan Gültekin , Jeffrey S. Hazboun , Ross J. Jennings , Aaron D. Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey S. Key , Nima Laal , Michael T. Lam , William G. Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Tingting Liu , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Alexander McEwen , James W. McKee , Maura A. McLaughlin , Natasha McMann , Bradley W. Meyers , Chiara M. F. Mingarelli , Andrea Mitridate , Cherry Ng , David J. Nice , Stella Koch Ocker , Ken D. Olum , Timothy T. Pennucci , Benetge B. P. Perera , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Shashwat C. Sardesai , Ann Schmiedekamp , Carl Schmiedekamp , Kai Schmitz , Levi Schult , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Magdalena S. Siwek , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Abhimanyu Susobhanan , Joseph K. Swiggum , Stephen R. Taylor , Jacob E. Turner , Caner Unal , Michele Vallisneri , Sarah J. Vigeland , Haley M. Wahl , Caitlin A. Witt , Olivia Young
The mergers of supermassive black hole binaries (SMBHBs) promise to be incredible sources of gravitational waves (GWs). While the oscillatory part of the merger gravitational waveform will be outside the frequency sensitivity range of…
高能天体物理现象 · 物理学
2020-02-05
K. Aggarwal , Z. Arzoumanian , P. T. Baker , A. Brazier , P. R. Brook , S. Burke-Spolaor , S. Chatterjee , J. M. Cordes , N. J. Cornish , F. Crawford , H. T. Cromartie , K. Crowter , M. Decesar , P. B. Demorest , T. Dolch , J. A. Ellis , R. D. Ferdman , E. C. Ferrara , E. Fonseca , N. Garver-Daniels , P. Gentile , D. Good , J. S. Hazboun , A. M. Holgado , E. A. Huerta , K. Islo , R. Jennings , G. Jones , M. L. Jones , D. L. Kaplan , L. Z. Kelley , J. S. Key , M. T. Lam , T. J. W. Lazio , L. Levin , D. R. Lorimer , J. Luo , R. S. Lynch , D. R. Madison , M. A. McLaughlin , S. T. McWilliams , C. M. F. Mingarelli , C. Ng , D. J. Nice , T. T. Pennucci , N. S. Pol , S. M. Ransom , P. S. Ray , X. Siemens , J. Simon , R. Spiewak , I. H. Stairs , D. R. Stinebring , K. Stovall , J. K. Swiggum , S. R. Taylor , M. Vallisneri , R. Van Haasterer , S. J. Vigeland , C. A. Witt , W. W. Zhu
We report multiple lines of evidence for a stochastic signal that is correlated among 67 pulsars from the 15-year pulsar-timing data set collected by the North American Nanohertz Observatory for Gravitational Waves. The correlations follow…
高能天体物理现象 · 物理学
2023-06-29
Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Paul T. Baker , Bence Becsy , Laura Blecha , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Rand Burnette , Robin Case , Maria Charisi , Shami Chatterjee , Katerina Chatziioannou , Belinda D. Cheeseboro , Siyuan Chen , Tyler Cohen , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Curt J. Cutler , Megan E. DeCesar , Dallas DeGan , Paul B. Demorest , Heling Deng , Timothy Dolch , Brendan Drachler , Justin A. Ellis , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Nate Garver-Daniels , Peter A. Gentile , Kyle A. Gersbach , Joseph Glaser , Deborah C. Good , Kayhan Gultekin , Jeffrey S. Hazboun , Sophie Hourihane , Kristina Islo , Ross J. Jennings , Aaron D. Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey S. Key , Tonia C. Klein , Nima Laal , Michael T. Lam , William G. Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Tyson B. Littenberg , Tingting Liu , Andrea Lommen , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Margaret A. Mattson , Alexander McEwen , James W. McKee , Maura A. McLaughlin , Natasha McMann , Bradley W. Meyers , Patrick M. Meyers , Chiara M. F. Mingarelli , Andrea Mitridate , Priyamvada Natarajan , Cherry Ng , David J. Nice , Stella Koch Ocker , Ken D. Olum , Timothy T. Pennucci , Benetge B. P. Perera , Polina Petrov , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Shashwat C. Sardesai , Ann Schmiedekamp , Carl Schmiedekamp , Kai Schmitz , Levi Schult , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Magdalena S. Siwek , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Jerry P. Sun , Abhimanyu Susobhanan , Joseph K. Swiggum , Jacob Taylor , Stephen R. Taylor , Jacob E. Turner , Caner Unal , Michele Vallisneri , Rutger van Haasteren , Sarah J. Vigeland , Haley M. Wahl , Qiaohong Wang , Caitlin A. Witt , Olivia Young
An ensemble of inspiraling supermassive black hole binaries should produce a stochastic background of very low frequency gravitational waves. This stochastic background is predicted to be a power law, with a spectral index of -2/3, and it…
高能天体物理现象 · 物理学
2020-02-26
J. S. Hazboun , J. Simon , S. R. Taylor , M. T. Lam , S. J. Vigeland , K. Islo , J. S. Key , Z. Arzoumanian , P. T. Baker , A. Brazier , P. R. Brook , S. Burke-Spolaor , S. Chatterjee , J. M. Cordes , N. J. Cornish , F. Crawford , K. Crowter , H. T. Cromartie , M. DeCesar , P. B. Demorest , T. Dolch , J. A. Ellis , R. D. Ferdman , E. Ferrara , E. Fonseca , N. Garver-Daniels , P. Gentile , D. Good , A. M. Holgado , E. A. Huerta , R. Jennings , G. Jones , M. L. Jones , A. R. Kaiser , D. L. Kaplan , L. Z. Kelley , T. J. W. Lazio , L. Levin , A. N. Lommen , D. R. Lorimer , J. Luo , R. S. Lynch , D. R. Madison , M. A. McLaughlin , S. T. McWilliams , C. M. F. Mingarelli , C. Ng , D. J. Nice , T. T. Pennucci , N. S. Pol , S. M. Ransom , P. S. Ray , X. Siemens , R. Spiewak , I. H. Stairs , D. R. Stinebring , K. Stovall , J. Swiggum , J. E. Turner , M. Vallisneri , R. van Haasteren , C. A. Witt , W. W. Zhu
Supermassive black hole binaries (SMBHBs) should form frequently in galactic nuclei as a result of galaxy mergers. At sub-parsec separations, binaries become strong sources of low-frequency gravitational waves (GWs), targeted by Pulsar…
星系天体物理 · 物理学
2021-06-30
Zaven Arzoumanian , Paul T. Baker , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Bence Becsy , Maria Charisi , Shami Chatterjee , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Megan E. DeCesar , Paul B. Demorest , Timothy Dolch , Rodney D. Elliott , Justin A. Ellis , Elizabeth C. Ferrara , Emmanuel Fonseca , Nathan Garver-Daniels , Peter A. Gentile , Deborah C. Good , Jeffrey S. Hazboun , Kristina Islo , Ross J. Jennings , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Z. Kelley , Joey Shapiro Key , Michael T. Lam , T. Joseph W. Lazio , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Maura A. McLaughlin , Chiara M. F. Mingarelli , Cherry Ng , David J. Nice , Timothy T. Pennucci , Nihan S. Pol , Scott M. Ransom , Paul S. Ray , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Renee Spiewak , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Joseph K. Swiggum , Stephen R. Taylor , Michele Vallisneri , Sarah J. Vigeland , Caitlin A. Witt , The NANOGrav Collaboration
Isolated neutron stars are prime targets for continuous-wave (CW) searches by ground-based gravitational$-$wave interferometers. Results are presented from a CW search targeting ten pulsars. The search uses a semicoherent algorithm, which…
高能天体物理现象 · 物理学
2021-04-22
Deeksha Beniwal , Patrick Clearwater , Liam Dunn , Andrew Melatos , David Ottaway
Following the recent evidence for a gravitational wave (GW) background found by pulsar timing array (PTA) experiments, the next major science milestone is resolving individual supermassive black hole binaries (SMBHBs). The detection of…
天体物理仪器与方法 · 物理学
2026-04-21
Polina Petrov , Levi Schult , Stephen R. Taylor , Nihan Pol , Nima Laal , Maria Charisi , Chung-Pei Ma
Pulsar-timing-array experiments have reported evidence for a stochastic background of nanohertz gravitational waves consistent with the signal expected from a population of supermassive--black-hole binaries. Their analyses assume power-law…
高能天体物理现象 · 物理学
2025-03-17
Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Jeremy George Baier , Paul T. Baker , Bence Bécsy , Laura Blecha , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , J. Andrew Casey-Clyde , Maria Charisi , Shami Chatterjee , Katerina Chatziioannou , Tyler Cohen , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Megan E. DeCesar , Paul B. Demorest , Heling Deng , Lankeswar Dey , Timothy Dolch , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Emiko C. Gardiner , Nate Garver-Daniels , Peter A. Gentile , Kyle A. Gersbach , Joseph Glaser , Deborah C. Good , Kayhan Gültekin , Jeffrey S. Hazboun , Ross J. Jennings , Aaron D. Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey S. Key , Nima Laal , Michael T. Lam , William G. Lamb , Bjorn Larsen , T. Joseph W. Lazio , Natalia Lewandowska , Tingting Liu , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Alexander McEwen , James W. McKee , Maura A. McLaughlin , Natasha McMann , Bradley W. Meyers , Patrick M. Meyers , Chiara M. F. Mingarelli , Andrea Mitridate , Cherry Ng , David J. Nice , Stella Koch Ocker , Ken D. Olum , Timothy T. Pennucci , Benetge B. P. Perera , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Jessie C. Runnoe , Alexander Saffer , Shashwat C. Sardesai , Ann Schmiedekamp , Carl Schmiedekamp , Kai Schmitz , Brent J. Shapiro-Albert , Xavier Siemens , Joseph Simon , Magdalena S. Siwek , Sophia V. Sosa Fiscella , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Abhimanyu Susobhanan , Joseph K. Swiggum , Stephen R. Taylor , Jacob E. Turner , Caner Unal , Michele Vallisneri , Sarah J. Vigeland , Haley M. Wahl , Caitlin A. Witt , David Wright , Olivia Young
We search for an isotropic stochastic gravitational-wave background (GWB) in the newly released $11$-year dataset from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav). While we find no significant evidence for a…
高能天体物理现象 · 物理学
2018-06-11
Z. Arzoumanian , P. T. Baker , A. Brazier , S. Burke-Spolaor , S. J. Chamberlin , S. Chatterjee , B. Christy , J. M. Cordes , N. J. Cornish , F. Crawford , H. Thankful Cromartie , K. Crowter , M. DeCesar , P. B. Demorest , T. Dolch , J. A. Ellis , R. D. Ferdman , E. Ferrara , W. M. Folkner , E. Fonseca , N. Garver-Daniels , P. A. Gentile , R. Haas , J. S. Hazboun , E. A. Huerta , K. Islo , G. Jones , M. L. Jones , D. L. Kaplan , V. M. Kaspi , M. T. Lam , T. J. W. Lazio , L. Levin , A. N. Lommen , D. R. Lorimer , J. Luo , R. S. Lynch , D. R. Madison , M. A. McLaughlin , S. T. McWilliams , C. M. F. Mingarelli , C. Ng , D. J. Nice , R. S. Park , T. T. Pennucci , N. S. Pol , S. M. Ransom , P. S. Ray , A. Rasskazov , X. Siemens , J. Simon , R. Spiewak , I. H. Stairs , D. R. Stinebring , K. Stovall , J. Swiggum , S. R. Taylor , M. Vallisneri , S. Vigeland , W. W. Zhu
While pulsar timing array (PTA) collaborations have reported evidence for a stochastic gravitational wave background (GWB), the detection of continuous gravitational waves (GWs) from a confirmed supermassive black hole binary (SMBHB) would…
Supermassive black hole binaries are promising sources of low-frequency gravitational waves (GWs) and bright electromagnetic emission. Pulsar timing array searches for resolved binaries are complex and computationally expensive and so far…