The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630
MAXI J1348-630, as a low-mass black hole binary system in the Galaxy, showed an X-ray outburst in 2019. We analyzed the Insight Hard X-ray Modulation Telescope spectral data in the low hard state and intermediate state during the outburst from MJD 58510 to 58519 at the energy band from 2 to 100 keV....
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adbdb9 |
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| author | Hanji Wu Wei Wang |
| author_facet | Hanji Wu Wei Wang |
| author_sort | Hanji Wu |
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| description | MAXI J1348-630, as a low-mass black hole binary system in the Galaxy, showed an X-ray outburst in 2019. We analyzed the Insight Hard X-ray Modulation Telescope spectral data in the low hard state and intermediate state during the outburst from MJD 58510 to 58519 at the energy band from 2 to 100 keV. During the entire process, a thin disk extending to the innermost stable circular orbit (ISCO) from a large truncated disk (truncated radius >5 ISCO) suggested the corona geometry evolution. There exist time lags between the radio and hard X-ray flux peaks: the 30–100 keV flux is about 5 days ahead of the radio flux, the 11–30 keV flux is about 4 days ahead, and the reflection fraction is about 2 days ahead, with the accretion disk approaching the ISCO about 1 day before radio peak. This disk–corona–jet coupling and evolution suggest the corona contains two phases of cold dense material and hot gas, with the high-temperature region of the corona cooling fast. The strong radio emission accompanying a thin accretion disk with a relatively high accretion rate favors a magnetic tower jet mechanism. |
| format | Article |
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| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-a6b4e29a320c4ad4be734b48f732a7fe2025-08-20T03:44:27ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01982218710.3847/1538-4357/adbdb9The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630Hanji Wu0https://orcid.org/0000-0003-3003-866XWei Wang1https://orcid.org/0000-0003-3901-8403Department of Astronomy, School of Physics and Technology, Wuhan University , Wuhan 430072, People’s Republic of China ; wangwei2017@whu.edu.cnDepartment of Astronomy, School of Physics and Technology, Wuhan University , Wuhan 430072, People’s Republic of China ; wangwei2017@whu.edu.cnMAXI J1348-630, as a low-mass black hole binary system in the Galaxy, showed an X-ray outburst in 2019. We analyzed the Insight Hard X-ray Modulation Telescope spectral data in the low hard state and intermediate state during the outburst from MJD 58510 to 58519 at the energy band from 2 to 100 keV. During the entire process, a thin disk extending to the innermost stable circular orbit (ISCO) from a large truncated disk (truncated radius >5 ISCO) suggested the corona geometry evolution. There exist time lags between the radio and hard X-ray flux peaks: the 30–100 keV flux is about 5 days ahead of the radio flux, the 11–30 keV flux is about 4 days ahead, and the reflection fraction is about 2 days ahead, with the accretion disk approaching the ISCO about 1 day before radio peak. This disk–corona–jet coupling and evolution suggest the corona contains two phases of cold dense material and hot gas, with the high-temperature region of the corona cooling fast. The strong radio emission accompanying a thin accretion disk with a relatively high accretion rate favors a magnetic tower jet mechanism.https://doi.org/10.3847/1538-4357/adbdb9X-ray binary starsStellar accretion disksRelativistic jetsBlack hole physics |
| spellingShingle | Hanji Wu Wei Wang The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630 The Astrophysical Journal X-ray binary stars Stellar accretion disks Relativistic jets Black hole physics |
| title | The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630 |
| title_full | The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630 |
| title_fullStr | The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630 |
| title_full_unstemmed | The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630 |
| title_short | The Hot Accretion Flow Evolution in the Black Hole X-Ray Binary MAXI J1348-630 |
| title_sort | hot accretion flow evolution in the black hole x ray binary maxi j1348 630 |
| topic | X-ray binary stars Stellar accretion disks Relativistic jets Black hole physics |
| url | https://doi.org/10.3847/1538-4357/adbdb9 |
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