Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis
<jats:title>Abstract</jats:title> <jats:p>We analyze five epochs of Neutron star Interior Composition Explorer (NICER) data of the black hole X-ray binary MAXI J1820+070 during the bright hard-to-soft state transition in its 2018 outburst with both reflection spectr...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Astronomical Society
2022
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| Online Access: | https://hdl.handle.net/1721.1/141969 |
| _version_ | 1826207217376821248 |
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| author | Wang, Jingyi Mastroserio, Guglielmo Kara, Erin García, Javier A Ingram, Adam Connors, Riley van der Klis, Michiel Dauser, Thomas Steiner, James F Buisson, Douglas JK Homan, Jeroen Lucchini, Matteo Fabian, Andrew C Bright, Joe Fender, Rob Cackett, Edward M Remillard, Ron A |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Wang, Jingyi Mastroserio, Guglielmo Kara, Erin García, Javier A Ingram, Adam Connors, Riley van der Klis, Michiel Dauser, Thomas Steiner, James F Buisson, Douglas JK Homan, Jeroen Lucchini, Matteo Fabian, Andrew C Bright, Joe Fender, Rob Cackett, Edward M Remillard, Ron A |
| author_sort | Wang, Jingyi |
| collection | MIT |
| description | <jats:title>Abstract</jats:title>
<jats:p>We analyze five epochs of Neutron star Interior Composition Explorer (NICER) data of the black hole X-ray binary MAXI J1820+070 during the bright hard-to-soft state transition in its 2018 outburst with both reflection spectroscopy and Fourier-resolved timing analysis. We confirm the previous discovery of reverberation lags in the hard state, and find that the frequency range where the (soft) reverberation lag dominates decreases with the reverberation lag amplitude increasing during the transition, suggesting an increasing X-ray emitting region, possibly due to an expanding corona. By jointly fitting the lag-energy spectra in a number of broad frequency ranges with the reverberation model <jats:monospace>reltrans</jats:monospace>, we find the increase in reverberation lag is best described by an increase in the X-ray coronal height. This result, along with the finding that the corona contracts in the hard state, suggests a close relationship between spatial extent of the X-ray corona and the radio jet. We find the corona expansion (as probed by reverberation) precedes a radio flare by ∼5 days, which may suggest that the hard-to-soft transition is marked by the corona expanding vertically and launching a jet knot that propagates along the jet stream at relativistic velocities.</jats:p> |
| first_indexed | 2024-09-23T13:45:52Z |
| format | Article |
| id | mit-1721.1/141969 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:45:52Z |
| publishDate | 2022 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | mit-1721.1/1419692023-06-20T17:35:20Z Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis Wang, Jingyi Mastroserio, Guglielmo Kara, Erin García, Javier A Ingram, Adam Connors, Riley van der Klis, Michiel Dauser, Thomas Steiner, James F Buisson, Douglas JK Homan, Jeroen Lucchini, Matteo Fabian, Andrew C Bright, Joe Fender, Rob Cackett, Edward M Remillard, Ron A MIT Kavli Institute for Astrophysics and Space Research <jats:title>Abstract</jats:title> <jats:p>We analyze five epochs of Neutron star Interior Composition Explorer (NICER) data of the black hole X-ray binary MAXI J1820+070 during the bright hard-to-soft state transition in its 2018 outburst with both reflection spectroscopy and Fourier-resolved timing analysis. We confirm the previous discovery of reverberation lags in the hard state, and find that the frequency range where the (soft) reverberation lag dominates decreases with the reverberation lag amplitude increasing during the transition, suggesting an increasing X-ray emitting region, possibly due to an expanding corona. By jointly fitting the lag-energy spectra in a number of broad frequency ranges with the reverberation model <jats:monospace>reltrans</jats:monospace>, we find the increase in reverberation lag is best described by an increase in the X-ray coronal height. This result, along with the finding that the corona contracts in the hard state, suggests a close relationship between spatial extent of the X-ray corona and the radio jet. We find the corona expansion (as probed by reverberation) precedes a radio flare by ∼5 days, which may suggest that the hard-to-soft transition is marked by the corona expanding vertically and launching a jet knot that propagates along the jet stream at relativistic velocities.</jats:p> 2022-04-20T15:44:13Z 2022-04-20T15:44:13Z 2021 2022-04-20T15:40:52Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/141969 Wang, Jingyi, Mastroserio, Guglielmo, Kara, Erin, García, Javier A, Ingram, Adam et al. 2021. "Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis." The Astrophysical Journal Letters, 910 (1). en 10.3847/2041-8213/ABEC79 The Astrophysical Journal Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Astronomical Society The American Astronomical Society |
| spellingShingle | Wang, Jingyi Mastroserio, Guglielmo Kara, Erin García, Javier A Ingram, Adam Connors, Riley van der Klis, Michiel Dauser, Thomas Steiner, James F Buisson, Douglas JK Homan, Jeroen Lucchini, Matteo Fabian, Andrew C Bright, Joe Fender, Rob Cackett, Edward M Remillard, Ron A Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis |
| title | Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis |
| title_full | Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis |
| title_fullStr | Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis |
| title_full_unstemmed | Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis |
| title_short | Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-timing Analysis |
| title_sort | disk corona jet connection in the intermediate state of maxi j1820 070 revealed by nicer spectral timing analysis |
| url | https://hdl.handle.net/1721.1/141969 |
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