Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER
We present the results from the NICER observation data of MAXI J1803−298 across the entire 2021 outburst. In the intermediate and soft state, we detect significant absorption lines at ∼7.0 and ∼6.7 keV, arising from X-ray disk winds outflowing with a velocity of hundreds of km s ^−1 along our line o...
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad7b29 |
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| author | Zuobin Zhang Cosimo Bambi Honghui Liu Jiachen Jiang Fangzheng Shi Yuexin Zhang Andrew J. Young John A. Tomsick Benjamin M. Coughenour Menglei Zhou |
| author_facet | Zuobin Zhang Cosimo Bambi Honghui Liu Jiachen Jiang Fangzheng Shi Yuexin Zhang Andrew J. Young John A. Tomsick Benjamin M. Coughenour Menglei Zhou |
| author_sort | Zuobin Zhang |
| collection | DOAJ |
| description | We present the results from the NICER observation data of MAXI J1803−298 across the entire 2021 outburst. In the intermediate and soft state, we detect significant absorption lines at ∼7.0 and ∼6.7 keV, arising from X-ray disk winds outflowing with a velocity of hundreds of km s ^−1 along our line of sight. The fitting results from the photoionized model suggest that the winds are driven by thermal pressure and the mass-loss rate is low. We find a clear transition for iron from predominantly H-like to predominantly He-like during the intermediate-to-soft state transition. Our results indicate this transition for iron is caused by the evolution of the illuminating spectrum and the slow change of the geometric properties of the disk winds together. The coexistence of disk winds and quasiperiodic oscillation features in the intermediate state is also reported. Our study makes MAXI J1803−298 the first source in which a transition from optical winds to X-ray winds is detected, offering new insights into the evolution of disk winds across an entire outburst and long-term coupling of accretion disks and mass outflows around accreting black holes. |
| format | Article |
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| institution | OA Journals |
| issn | 1538-4357 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-d0ef9cab3ba94cababa5c9f2ec450b2c2025-08-20T02:09:55ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-0197512210.3847/1538-4357/ad7b29Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICERZuobin Zhang0https://orcid.org/0000-0003-0847-1299Cosimo Bambi1https://orcid.org/0000-0002-3180-9502Honghui Liu2https://orcid.org/0000-0003-2845-1009Jiachen Jiang3https://orcid.org/0000-0002-9639-4352Fangzheng Shi4https://orcid.org/0000-0003-3922-5007Yuexin Zhang5Andrew J. Young6John A. Tomsick7https://orcid.org/0000-0001-5506-9855Benjamin M. Coughenour8Menglei Zhou9Center for Astronomy and Astrophysics, Center for Field Theory and Particle Physics and Department of Physics, Fudan University , Shanghai 200438, People’s Republic of China ; bambi@fudan.edu.cnCenter for Astronomy and Astrophysics, Center for Field Theory and Particle Physics and Department of Physics, Fudan University , Shanghai 200438, People’s Republic of China ; bambi@fudan.edu.cn; School of Natural Sciences and Humanities, New Uzbekistan University , Tashkent 100007, UzbekistanCenter for Astronomy and Astrophysics, Center for Field Theory and Particle Physics and Department of Physics, Fudan University , Shanghai 200438, People’s Republic of China ; bambi@fudan.edu.cn; Institut für Astronomie und Astrophysik, Eberhard-Karls Universität Tübingen , D-72076 Tübingen, GermanyInstitute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK; Department of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UKShanghai Astronomical Observatory, Chinese Academy of Sciences , 80 Nandan Road, Shanghai 200030, People’s Republic of ChinaCenter for Astrophysics , Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA; Kapteyn Astronomical Institute, University of Groningen , P.O. BOX 800, 9700 AV Groningen, The NetherlandsSchool of Physics, Tyndall Avenue, University of Bristol , Bristol BS8 1TH, UKSpace Sciences Laboratory, 7 Gauss Way, University of California , Berkeley, CA 94720-7450, USASpace Sciences Laboratory, 7 Gauss Way, University of California , Berkeley, CA 94720-7450, USAInstitut für Astronomie und Astrophysik, Eberhard-Karls Universität Tübingen , D-72076 Tübingen, GermanyWe present the results from the NICER observation data of MAXI J1803−298 across the entire 2021 outburst. In the intermediate and soft state, we detect significant absorption lines at ∼7.0 and ∼6.7 keV, arising from X-ray disk winds outflowing with a velocity of hundreds of km s ^−1 along our line of sight. The fitting results from the photoionized model suggest that the winds are driven by thermal pressure and the mass-loss rate is low. We find a clear transition for iron from predominantly H-like to predominantly He-like during the intermediate-to-soft state transition. Our results indicate this transition for iron is caused by the evolution of the illuminating spectrum and the slow change of the geometric properties of the disk winds together. The coexistence of disk winds and quasiperiodic oscillation features in the intermediate state is also reported. Our study makes MAXI J1803−298 the first source in which a transition from optical winds to X-ray winds is detected, offering new insights into the evolution of disk winds across an entire outburst and long-term coupling of accretion disks and mass outflows around accreting black holes.https://doi.org/10.3847/1538-4357/ad7b29X-ray astronomyLow-mass x-ray binary starsAstrophysical black holesAccretion |
| spellingShingle | Zuobin Zhang Cosimo Bambi Honghui Liu Jiachen Jiang Fangzheng Shi Yuexin Zhang Andrew J. Young John A. Tomsick Benjamin M. Coughenour Menglei Zhou Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER The Astrophysical Journal X-ray astronomy Low-mass x-ray binary stars Astrophysical black holes Accretion |
| title | Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER |
| title_full | Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER |
| title_fullStr | Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER |
| title_full_unstemmed | Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER |
| title_short | Variable Ionized Disk Winds in MAXI J1803−298 Revealed by NICER |
| title_sort | variable ionized disk winds in maxi j1803 298 revealed by nicer |
| topic | X-ray astronomy Low-mass x-ray binary stars Astrophysical black holes Accretion |
| url | https://doi.org/10.3847/1538-4357/ad7b29 |
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