High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD Simulations
To understand the decaying phase of outbursts in the black hole (BH) X-ray binaries (BH-XRBs), we performed very long general relativistic magnetohydrodynamic simulations of a geometrically thin accretion disk around a Kerr BH with slowly rotating matter injected from outside. We thoroughly studied...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad0049 |
| _version_ | 1797626687330975744 |
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| author | Indu K. Dihingia Yosuke Mizuno Prateek Sharma |
| author_facet | Indu K. Dihingia Yosuke Mizuno Prateek Sharma |
| author_sort | Indu K. Dihingia |
| collection | DOAJ |
| description | To understand the decaying phase of outbursts in the black hole (BH) X-ray binaries (BH-XRBs), we performed very long general relativistic magnetohydrodynamic simulations of a geometrically thin accretion disk around a Kerr BH with slowly rotating matter injected from outside. We thoroughly studied the flow properties, dynamical behavior of the accretion rate, magnetic flux rate, and jet properties during the temporal evolution. Due to the interaction between the thin disk and injected matter, the accretion flow near the BH goes through different phases. The sequence of phases is: soft state → soft-intermediate state → hard-intermediate state → hard state → quiescent state. For the accretion rate (and hence the luminosity) to decrease (as observed) in our model, the mass injection should not decay slower than the angular momentum injection. We also observed quasiperiodic oscillations (QPOs) in the accretion flow. Throughout the evolution, we observed low-frequency QPOs (∼10 Hz) and high-frequency QPOs (∼200 Hz). Our simple unified accretion flow model for state transitions is able to describe outbursts in BH-XRBs. |
| first_indexed | 2024-03-11T10:13:45Z |
| format | Article |
| id | doaj.art-5a9dfaa0dcad4205b6bab0ca81761978 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-11T10:13:45Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-5a9dfaa0dcad4205b6bab0ca817619782023-11-16T11:29:51ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01958210510.3847/1538-4357/ad0049High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD SimulationsIndu K. Dihingia0https://orcid.org/0000-0002-4064-0446Yosuke Mizuno1https://orcid.org/0000-0002-8131-6730Prateek Sharma2https://orcid.org/0000-0003-2635-4643Tsung-Dao Lee Institute, Shanghai Jiao-Tong University , Shanghai, 520 Shengrong Road, 201210, People's Republic of China ; ikd4638@sjtu.edu.cn, ikd4638@gmail.comTsung-Dao Lee Institute, Shanghai Jiao-Tong University , Shanghai, 520 Shengrong Road, 201210, People's Republic of China ; ikd4638@sjtu.edu.cn, ikd4638@gmail.com; School of Physics & Astronomy, Shanghai Jiao-Tong University , Shanghai, 800 Dongchuan Road, 200240, People's Republic of China; Institut für Theoretische Physik, Goethe Universität , Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, GermanyDepartment of Physics, Indian Institute of Science, Bangalore, KA 560012, IndiaTo understand the decaying phase of outbursts in the black hole (BH) X-ray binaries (BH-XRBs), we performed very long general relativistic magnetohydrodynamic simulations of a geometrically thin accretion disk around a Kerr BH with slowly rotating matter injected from outside. We thoroughly studied the flow properties, dynamical behavior of the accretion rate, magnetic flux rate, and jet properties during the temporal evolution. Due to the interaction between the thin disk and injected matter, the accretion flow near the BH goes through different phases. The sequence of phases is: soft state → soft-intermediate state → hard-intermediate state → hard state → quiescent state. For the accretion rate (and hence the luminosity) to decrease (as observed) in our model, the mass injection should not decay slower than the angular momentum injection. We also observed quasiperiodic oscillations (QPOs) in the accretion flow. Throughout the evolution, we observed low-frequency QPOs (∼10 Hz) and high-frequency QPOs (∼200 Hz). Our simple unified accretion flow model for state transitions is able to describe outbursts in BH-XRBs.https://doi.org/10.3847/1538-4357/ad0049AccretionBlack hole physicsMagnetohydrodynamicsX-ray binary stars |
| spellingShingle | Indu K. Dihingia Yosuke Mizuno Prateek Sharma High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD Simulations The Astrophysical Journal Accretion Black hole physics Magnetohydrodynamics X-ray binary stars |
| title | High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD Simulations |
| title_full | High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD Simulations |
| title_fullStr | High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD Simulations |
| title_full_unstemmed | High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD Simulations |
| title_short | High-soft to Low-hard State Transition in Black Hole X-Ray Binaries with GRMHD Simulations |
| title_sort | high soft to low hard state transition in black hole x ray binaries with grmhd simulations |
| topic | Accretion Black hole physics Magnetohydrodynamics X-ray binary stars |
| url | https://doi.org/10.3847/1538-4357/ad0049 |
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