1 code implementation • 14 May 2020 • 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, Kathryn Crowter, Megan E. DeCesar, Paul B. Demorest, Timothy Dolch, Rodney D. Elliott, Justin A. Ellis, Robert D. Ferdman, 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 Zoltan Kelley, Joey Shapiro Key, Michael T. Lam, T. Joseph W. Lazio, Lina Levin, Jing Luo, Ryan S. Lynch, 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, Weiwei Zhu
Due to the observed periodicities present in the photometric and astrometric data of the source of the source, it has been theorized to contain a supermassive black hole binary.
Astrophysics of Galaxies Instrumentation and Methods for Astrophysics
no code implementations • 13 May 2020 • 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
We detail our observational methods and present a set of TOA measurements, based on "narrowband" analysis, in which many TOAs are calculated within narrow radio-frequency bands for data collected simultaneously across a wide bandwidth.
Time Series Analysis High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics
no code implementations • 2 Jul 2018 • Peter A. Gentile, Maura A. McLaughlin, Paul B. Demorest, Ingrid H. Stairs, Zaven Arzoumanian, Kathryn Crowter, Timothy Dolch, Megan E. DeCesar, Justin A. Ellis, Robert D. Ferdman, Elizabeth C. Ferrara, Emmanuel Fonseca, Marjorie E. Gonzalez, Glenn Jones, Megan L. Jones, Michael T. Lam, Lina Levin, Duncan R. Lorimer, Ryan S. Lynch, Cherry Ng, David J. Nice, Timothy T. Pennucci, Scott M. Ransom, Paul S. Ray, Ren'ee Spiewak, Kevin Stovall, Joseph K. Swiggum, Weiwei Zhu
We present the polarization pulse profiles for 28 pulsars observed with the Arecibo Observatory by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) timing project at 2. 1 GHz, 1. 4 GHz, and 430 MHz.
High Energy Astrophysical Phenomena
no code implementations • 24 Dec 2017 • 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
Most pulsars were observed with approximately monthly cadence, with six high--timing-precision pulsars observed weekly, and all were observed at widely separated frequencies at each observing epoch in order to fit for time-variable dispersion delays.
High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics
1 code implementation • 18 Jan 2016 • Lina Levin, Maura A. McLaughlin, Glenn Jones, James M. Cordes, Daniel R. Stinebring, Shami Chatterjee, Timothy Dolch, Michael T. Lam, T. Joseph W. Lazio, Nipuni Palliyaguru, Zaven Arzoumanian, Kathryn Crowter, Paul B. Demorest, Justin A. Ellis, Robert D. Ferdman, Emmanuel Fonseca, Marjorie E. Gonzalez, Megan L. Jones, David J. Nice, Timothy T. Pennucci, Scott M. Ransom, Ingrid H. Stairs, Kevin Stovall, Joseph K. Swiggum, Weiwei Zhu
For most of the 10 pulsars for which the scaling has been measured, the bandwidths scale with frequency less steeply than expected for a Kolmogorov medium.
High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics