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200 papers
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…
Astrophysics of Galaxies · Physics
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
We present an analysis of high-precision pulsar timing data taken as part of the North American Nanohertz Observatory for Gravitational waves (NANOGrav) project. We have observed 17 pulsars for a span of roughly five years using the Green…
Cosmology and Nongalactic Astrophysics · Physics
2015-06-04
P. B. Demorest , R. D. Ferdman , M. E. Gonzalez , D. Nice , S. Ransom , I. H. Stairs , Z. Arzoumanian , A. Brazier , S. Burke-Spolaor , S. J. Chamberlin , J. M. Cordes , J. Ellis , L. S. Finn , P. Freire , S. Giampanis , F. Jenet , V. M. Kaspi , J. Lazio , A. N. Lommen , M. McLaughlin , N. Palliyaguru , D. Perrodin , R. M. Shannon , X. Siemens , D. Stinebring , J. Swiggum , W. W. Zhu
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…
Astrophysics of Galaxies · Physics
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
We present high-precision timing data over time spans of up to 11 years for 45 millisecond pulsars observed as part of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) project, aimed at detecting and…
High Energy Astrophysical Phenomena · Physics
2018-04-12
Zaven Arzoumanian , Adam Brazier , Sarah Burke-Spolaor , Sydney Chamberlin , Shami Chatterjee , Brian Christy , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Megan E. DeCesar , Paul B. Demorest , Timothy Dolch , Justin A. Ellis , Robert D. Ferdman , Elizabeth C. Ferrara , Emmanuel Fonseca , Nathan Garver-Daniels , Peter A. Gentile , Daniel Halmrast , Eliu Huerta , Fredrick A. Jenet , Cody Jessup , Glenn Jones , Megan L. Jones , David L. Kaplan , Michael T. Lam , T. Joseph W. Lazio , Lina Levin , Andrea Lommen , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Dustin Madison , Allison M. Matthews , Maura A. McLaughlin , Sean T. McWilliams , Chiara Mingarelli , Cherry Ng , David J. Nice , Timothy T. Pennucci , Scott M. Ransom , Paul S. Ray , Xavier Siemens , Joseph Simon , Renee Spiewak , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Joseph K. Swiggum , Stephen R. Taylor , Michele Vallisneri , Rutger van Haasteren , Sarah J. Vigeland , Weiwei Zhu
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,…
High Energy Astrophysical Phenomena · Physics
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
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) is a consortium of astronomers whose goal is the creation of a galactic scale gravitational wave observatory sensitive to gravitational waves in the nHz-microHz…
Instrumentation and Methods for Astrophysics · Physics
2009-09-08
F. Jenet , L. S. Finn , J. Lazio , A. Lommen , M. McLaughlin , I. Stairs , D. Stinebring , J. Verbiest , A. Archibald , Z. Arzoumanian , D. Backer , J. Cordes , P. Demorest , R. Ferdman , P. Freire , M. Gonzalez , V. Kaspi , V. Kondratiev , D. Lorimer , R. Lynch , D. Nice , S. Ransom , R. Shannon , X. Siemens
Among efforts to detect gravitational radiation, pulsar timing arrays are uniquely poised to detect "memory" signatures, permanent perturbations in spacetime from highly energetic astrophysical events such as mergers of supermassive black…
Astrophysics of Galaxies · Physics
2015-09-23
Z. Arzoumanian , A. Brazier , S. Burke-Spolaor , S. J. Chamberlin , S. Chatterjee , B. Christy , J. M. Cordes , N. J. Cornish , P. B. Demorest , X. Deng , T. Dolch , J. A. Ellis , R. D. Ferdman , E. Fonseca , N. Garver-Daniels , F. Jenet , G. Jones , V. M. Kaspi , M. Koop , 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 , D. J. Nice , N. Palliyaguru , T. T. Pennucci , S. M. Ransom , X. Siemens , I. H. Stairs , D. R. Stinebring , K. Stovall , J. Swiggum , M. Vallisneri , R. van Haasteren , Y. Wang , W. W. Zhu
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) is a collaboration of researchers who are actively engaged in using North American radio telescopes to detect and study gravitational waves via pulsar timing. To…
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…
High Energy Astrophysical Phenomena · Physics
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
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…
High Energy Astrophysical Phenomena · Physics
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 present observations and timing analyses of 68 millisecond pulsars (MSPs) comprising the 15-year data set of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav). NANOGrav is a pulsar timing array (PTA) experiment…
High Energy Astrophysical Phenomena · Physics
2023-06-29
Gabriella Agazie , Md Faisal Alam , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Paul T. Baker , Laura Blecha , Victoria Bonidie , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Bence Bécsy , Christopher Chapman , 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 , Nate Garver-Daniels , Peter A. Gentile , Joseph Glaser , Deborah C. Good , Kayhan Gültekin , Jeffrey S. Hazboun , Ross J. Jennings , Cody Jessup , Aaron D. Johnson , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey S. Key , Anastasia Kuske , Nima Laal , Michael T. Lam , William G. Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Ye Lin , Tingting Liu , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Kaleb Maraccini , 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 , Elisa Panciu , Timothy T. Pennucci , Benetge B. P. Perera , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Joseph D. Romano , Laura Salo , Shashwat C. Sardesai , Carl Schmiedekamp , Ann Schmiedekamp , Kai Schmitz , 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 , Qiaohong Wang , Caitlin A. Witt , Olivia Young
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…
High Energy Astrophysical Phenomena · Physics
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
The stochastic gravitational-wave background is imprinted on the times of arrival of radio pulses from millisecond pulsars. Traditional pulsar timing analyses fit a timing model to each pulsar and search the residuals of the fit for a…
We present high-precision timing observations spanning up to nine years for 37 millisecond pulsars monitored with the Green Bank and Arecibo radio telescopes as part of the North American Nanohertz Observatory for Gravitational Waves…
Instrumentation and Methods for Astrophysics · Physics
2016-01-06
Z. Arzoumanian , A. Brazier , S. Burke-Spolaor , S. Chamberlin , S. Chatterjee , B. Christy , J. M. Cordes , N. Cornish , K. Crowter , P. B. Demorest , T. Dolch , J. A. Ellis , R. D. Ferdman , E. Fonseca , N. Garver-Daniels , M. E. Gonzalez , F. A. Jenet , G. Jones , M. Jones , V. M. Kaspi , M. Koop , M. T. Lam , T. J. W. Lazio , L. Levin , A. N. Lommen , D. R. Lorimer , J. Luo , R. S. Lynch , D. Madison , M. A. McLaughlin , S. T. McWilliams , D. J. Nice , N. Palliyaguru , T. T. Pennucci , S. M. Ransom , X. Siemens , I. H. Stairs , D. R. Stinebring , K. Stovall , J. K. Swiggum , M. Vallisneri , R. van Haasteren , Y. Wang , W. Zhu
We have searched for continuous gravitational wave (CGW) signals produced by individually resolvable, circular supermassive black hole binaries (SMBHBs) in the latest EPTA dataset, which consists of ultra-precise timing data on 41…
Cosmology and Nongalactic Astrophysics · Physics
2015-12-09
Stanislav Babak , Antoine Petiteau , Alberto Sesana , Patrick Brem , Pablo A. Rosado , Stephen R. Taylor , Antoine Lassus , Jason W. T. Hessels , Cees G. Bassa , Marta Burgay , R. Nicolas Caballero , David J. Champion , Ismael Cognard , Gregory Desvignes , Jonathan R. Gair , Lucas Guillemot , Gemma H. Janssen , Ramesh Karuppusamy , Michael Kramer , Patrick Lazarus , K. J. Lee , Lindley Lentati , Kuo Liu , Chiara M. F. Mingarelli , Stefan Oslowski , Delphine Perrodin , Andrea Possenti , Mark B. Purver , Sotiris Sanidas , Roy Smits , Ben Stappers , Gilles Theureau , Caterina Tiburzi , Rutger van Haasteren , Alberto Vecchio , Joris P. W. Verbiest
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…
High Energy Astrophysical Phenomena · Physics
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
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…
High Energy Astrophysical Phenomena · Physics
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
We present time-of-arrival (TOA) measurements and timing models of 47 millisecond pulsars (MSPs) observed from 2004 to 2017 at the Arecibo Observatory and the Green Bank Telescope by the North American Nanohertz Observatory for…
High Energy Astrophysical Phenomena · Physics
2020-12-24
Md F. Alam , Zaven Arzoumanian , Paul T. Baker , Harsha Blumer , Keith E. Bohler , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Keeisi Caballero , Richard S. Camuccio , Rachel L. Chamberlain , Shami Chatterjee , James M. Cordes , Neil J. Cornish , Fronefield Crawford , H. Thankful Cromartie , Megan E. DeCesar , Paul B. Demorest , Timothy Dolch , Justin A. Ellis , Robert D. Ferdman , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Yhamil Garcia , Nathan Garver-Daniels , Peter A. Gentile , Deborah C. Good , Jordan A. Gusdorff , Daniel Halmrast , Jeffrey Hazboun , Kristina Islo , Ross J. Jennings , Cody Jessup , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Joey Shapiro Key , Michael T. Lam , T. Joseph W. Lazio , Duncan R. Lorimer , Jing Luo , Ryan S. Lynch , Dustin Madison , Kaleb Maraccini , Maura A. McLaughlin , Chiara M. F. Mingarelli , Cherry Ng , Benjamin M. X. Nguyen , David J. Nice , Timothy T. Pennucci , Nihan S. Pol , Joshua Ramette , 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 , Michael Tripepi , Michele Vallisneri , Sarah J. Vigeland , Caitlin A. Witt , Weiwei Zhu
Gravitational wave astronomy using a pulsar timing array requires high-quality millisecond pulsars, correctable interstellar propagation delays, and high-precision measurements of pulse times of arrival. Here we identify noise in timing…
High Energy Astrophysical Phenomena · Physics
2017-01-04
M. T. Lam , J. M. Cordes , S. Chatterjee , Z. Arzoumanian , K. Crowter , P. B. Demorest , T. Dolch , J. A. Ellis , R. D. Ferdman , E. Fonseca , M. E. Gonzalez , G. Jones , M. L. Jones , L. Levin , D. R. Madison , M. A. McLaughlin , D. J. Nice , T. T. Pennucci , S. M. Ransom , R. M. Shannon , X. Siemens , I. H. Stairs , K. Stovall , J. K. Swiggum , W. W. Zhu
We present the first targeted searches for continuous gravitational waves (CWs) from 114 active galactic nuclei (AGN) that may host supermassive black hole binaries, using the NANOGrav 15 yr data set. By incorporating electromagnetic priors…
High Energy Astrophysical Phenomena · Physics
2026-04-24
Nikita Agarwal , Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Jeremy G. Baier , Paul T. Baker , Bence Becsy , Laura Blecha , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Rand Burnette , Robin Case , J. Andrew Casey-Clyde , Yu-Ting Chang , Maria Charisi , Shami Chatterjee , Tyler Cohen , Paolo Coppi , 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 , Daniel J. D'Orazio , Ellis Eisenberg , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Emiko C. Gardiner , Nate Garver-Daniels , Peter A. Gentile , Kyle A. Gersbach , Joseph Glaser , Matthew J. Graham , Deborah C. Good , Kayhan Gultekin , C. J. Harris , Jeffrey S. Hazboun , Forrest Hutchison , Ross J. Jennings , Aaron D. Johnson , Megan L. Jones , 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 , Cayenne Matt , 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 , Alexander Saffer , Shashwat C. Sardesai , Ann Schmiedekamp , Carl Schmiedekamp , Kai Schmitz , Federico Semenzato , Brent J. Shapiro-Albert , Rohan Shivakumar , Xavier Siemens , Joseph Simon , Sophia V. Sosa Fiscella , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Abhimanyu Susobhanan , Joseph K. Swiggum , Jacob A. Taylor , Stephen R. Taylor , Mercedes S. Thompson , Jacob E. Turner , Michele Vallisneri , Rutger van Haasteren , Sarah J. Vigeland , Haley M. Wahl , London Willson , Kevin P. Wilson , Caitlin A. Witt , David Wright , Olivia Young , Qinyuan Zheng