An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME
The millisecond pulsar J1713+0747 underwent a sudden and significant pulse shape change between 2021 April 16 and 17 (MJDs 59320 and 59321). Subsequently, the pulse shape gradually recovered over the course of several months. We report the results of continued multifrequency radio observations of th...
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IOP Publishing
2024-01-01
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| Online Access: | https://doi.org/10.3847/1538-4357/ad2930 |
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| author | Ross J. Jennings James M. Cordes Shami Chatterjee Maura A. McLaughlin Paul B. Demorest Zaven Arzoumanian Paul T. Baker Harsha Blumer Paul R. Brook Tyler Cohen Fronefield Crawford H. Thankful Cromartie Megan E. DeCesar Timothy Dolch Elizabeth C. Ferrara Emmanuel Fonseca Deborah C. Good Jeffrey S. Hazboun Megan L. Jones David L. Kaplan Michael T. Lam T. Joseph W. Lazio Duncan R. Lorimer Jing Luo Ryan S. Lynch James W. McKee Dustin R. Madison Bradley W. Meyers Chiara M. F. Mingarelli David J. Nice Timothy T. Pennucci Benetge B. P. Perera Nihan S. Pol Scott M. Ransom Paul S. Ray Brent J. Shapiro-Albert Xavier Siemens Ingrid H. Stairs Daniel R. Stinebring Joseph K. Swiggum Chia Min Tan Stephen R. Taylor Sarah J. Vigeland Caitlin A. Witt |
| author_facet | Ross J. Jennings James M. Cordes Shami Chatterjee Maura A. McLaughlin Paul B. Demorest Zaven Arzoumanian Paul T. Baker Harsha Blumer Paul R. Brook Tyler Cohen Fronefield Crawford H. Thankful Cromartie Megan E. DeCesar Timothy Dolch Elizabeth C. Ferrara Emmanuel Fonseca Deborah C. Good Jeffrey S. Hazboun Megan L. Jones David L. Kaplan Michael T. Lam T. Joseph W. Lazio Duncan R. Lorimer Jing Luo Ryan S. Lynch James W. McKee Dustin R. Madison Bradley W. Meyers Chiara M. F. Mingarelli David J. Nice Timothy T. Pennucci Benetge B. P. Perera Nihan S. Pol Scott M. Ransom Paul S. Ray Brent J. Shapiro-Albert Xavier Siemens Ingrid H. Stairs Daniel R. Stinebring Joseph K. Swiggum Chia Min Tan Stephen R. Taylor Sarah J. Vigeland Caitlin A. Witt |
| author_sort | Ross J. Jennings |
| collection | DOAJ |
| description | The millisecond pulsar J1713+0747 underwent a sudden and significant pulse shape change between 2021 April 16 and 17 (MJDs 59320 and 59321). Subsequently, the pulse shape gradually recovered over the course of several months. We report the results of continued multifrequency radio observations of the pulsar made using the Canadian Hydrogen Intensity Mapping Experiment and the 100 m Green Bank Telescope in a 3 yr period encompassing the shape change event, between 2020 February and 2023 February. As of 2023 February, the pulse shape had returned to a state similar to that seen before the event, but with measurable changes remaining. The amplitude of the shape change and the accompanying time-of-arrival residuals display a strong nonmonotonic dependence on radio frequency, demonstrating that the event is neither a glitch (the effects of which should be independent of radio frequency, ν ) nor a change in dispersion measure alone (which would produce a delay proportional to ν ^−2 ). However, it does bear some resemblance to the two previous “chromatic timing events” observed in J1713+0747, as well as to a similar event observed in PSR J1643−1224 in 2015. |
| first_indexed | 2024-04-24T16:35:49Z |
| format | Article |
| id | doaj.art-3efce57b3b984c16b8ed4afb4abe7a16 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-04-24T16:35:49Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj.art-3efce57b3b984c16b8ed4afb4abe7a162024-03-29T15:26:35ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-01964217910.3847/1538-4357/ad2930An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIMERoss J. Jennings0https://orcid.org/0000-0003-1082-2342James M. Cordes1https://orcid.org/0000-0002-4049-1882Shami Chatterjee2https://orcid.org/0000-0002-2878-1502Maura A. McLaughlin3https://orcid.org/0000-0001-7697-7422Paul B. Demorest4https://orcid.org/0000-0002-6664-965XZaven Arzoumanian5Paul T. Baker6https://orcid.org/0000-0003-2745-753XHarsha Blumer7https://orcid.org/0000-0003-4046-884XPaul R. Brook8https://orcid.org/0000-0003-3053-6538Tyler Cohen9https://orcid.org/0000-0001-7587-5483Fronefield Crawford10https://orcid.org/0000-0002-2578-0360H. Thankful Cromartie11https://orcid.org/0000-0002-6039-692XMegan E. DeCesar12https://orcid.org/0000-0002-2185-1790Timothy Dolch13https://orcid.org/0000-0001-8885-6388Elizabeth C. Ferrara14https://orcid.org/0000-0001-7828-7708Emmanuel Fonseca15https://orcid.org/0000-0001-8384-5049Deborah C. Good16https://orcid.org/0000-0003-1884-348XJeffrey S. Hazboun17https://orcid.org/0000-0003-2742-3321Megan L. Jones18https://orcid.org/0000-0001-6607-3710David L. Kaplan19https://orcid.org/0000-0001-6295-2881Michael T. Lam20https://orcid.org/0000-0003-0721-651XT. Joseph W. Lazio21Duncan R. Lorimer22https://orcid.org/0000-0003-1301-966XJing Luo23https://orcid.org/0000-0001-5373-5914Ryan S. Lynch24https://orcid.org/0000-0001-5229-7430James W. McKee25https://orcid.org/0000-0002-2885-8485Dustin R. Madison26https://orcid.org/0000-0003-2285-0404Bradley W. Meyers27https://orcid.org/0000-0001-8845-1225Chiara M. F. Mingarelli28https://orcid.org/0000-0002-4307-1322David J. Nice29https://orcid.org/0000-0002-6709-2566Timothy T. Pennucci30https://orcid.org/0000-0001-5465-2889Benetge B. P. Perera31https://orcid.org/0000-0002-8509-5947Nihan S. Pol32https://orcid.org/0000-0002-8826-1285Scott M. Ransom33https://orcid.org/0000-0001-5799-9714Paul S. Ray34https://orcid.org/0000-0002-5297-5278Brent J. Shapiro-Albert35https://orcid.org/0000-0002-7283-1124Xavier Siemens36https://orcid.org/0000-0002-7778-2990Ingrid H. Stairs37https://orcid.org/0000-0001-9784-8670Daniel R. Stinebring38https://orcid.org/0000-0002-1797-3277Joseph K. Swiggum39https://orcid.org/0000-0002-1075-3837Chia Min Tan40https://orcid.org/0000-0001-7509-0117Stephen R. Taylor41https://orcid.org/0000-0001-8217-1599Sarah J. Vigeland42https://orcid.org/0000-0003-4700-9072Caitlin A. Witt43https://orcid.org/0000-0002-6020-9274Department of Physics and Astronomy, West Virginia University , P.O. Box 6315, Morgantown, WV 26506, USA; Center for Gravitational Waves and Cosmology, West Virginia University , Chestnut Ridge Research Building, Morgantown, WV 26505, USADepartment of Astronomy, Cornell University , Ithaca, NY 14853, USA; Cornell Center for Astrophysics and Planetary Science and Department of Astronomy, Cornell University , Ithaca, NY 14853, USADepartment of Astronomy, Cornell University , Ithaca, NY 14853, USA; Cornell Center for Astrophysics and Planetary Science and Department of Astronomy, Cornell University , Ithaca, NY 14853, USADepartment of Physics and Astronomy, West Virginia University , P.O. 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DuSable Lake Shore Drive, Chicago, IL 60605, USAThe millisecond pulsar J1713+0747 underwent a sudden and significant pulse shape change between 2021 April 16 and 17 (MJDs 59320 and 59321). Subsequently, the pulse shape gradually recovered over the course of several months. We report the results of continued multifrequency radio observations of the pulsar made using the Canadian Hydrogen Intensity Mapping Experiment and the 100 m Green Bank Telescope in a 3 yr period encompassing the shape change event, between 2020 February and 2023 February. As of 2023 February, the pulse shape had returned to a state similar to that seen before the event, but with measurable changes remaining. The amplitude of the shape change and the accompanying time-of-arrival residuals display a strong nonmonotonic dependence on radio frequency, demonstrating that the event is neither a glitch (the effects of which should be independent of radio frequency, ν ) nor a change in dispersion measure alone (which would produce a delay proportional to ν ^−2 ). However, it does bear some resemblance to the two previous “chromatic timing events” observed in J1713+0747, as well as to a similar event observed in PSR J1643−1224 in 2015.https://doi.org/10.3847/1538-4357/ad2930PulsarsMillisecond pulsarsRadio astrometry |
| spellingShingle | Ross J. Jennings James M. Cordes Shami Chatterjee Maura A. McLaughlin Paul B. Demorest Zaven Arzoumanian Paul T. Baker Harsha Blumer Paul R. Brook Tyler Cohen Fronefield Crawford H. Thankful Cromartie Megan E. DeCesar Timothy Dolch Elizabeth C. Ferrara Emmanuel Fonseca Deborah C. Good Jeffrey S. Hazboun Megan L. Jones David L. Kaplan Michael T. Lam T. Joseph W. Lazio Duncan R. Lorimer Jing Luo Ryan S. Lynch James W. McKee Dustin R. Madison Bradley W. Meyers Chiara M. F. Mingarelli David J. Nice Timothy T. Pennucci Benetge B. P. Perera Nihan S. Pol Scott M. Ransom Paul S. Ray Brent J. Shapiro-Albert Xavier Siemens Ingrid H. Stairs Daniel R. Stinebring Joseph K. Swiggum Chia Min Tan Stephen R. Taylor Sarah J. Vigeland Caitlin A. Witt An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME The Astrophysical Journal Pulsars Millisecond pulsars Radio astrometry |
| title | An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME |
| title_full | An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME |
| title_fullStr | An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME |
| title_full_unstemmed | An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME |
| title_short | An Unusual Pulse Shape Change Event in PSR J1713+0747 Observed with the Green Bank Telescope and CHIME |
| title_sort | unusual pulse shape change event in psr j1713 0747 observed with the green bank telescope and chime |
| topic | Pulsars Millisecond pulsars Radio astrometry |
| url | https://doi.org/10.3847/1538-4357/ad2930 |
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