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An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242
期刊论文
OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者:
HXMT
  |  
收藏
  |  
浏览/下载:48/0
  |  
提交时间:2022/02/08
accretion
accretion disks
black hole physics
X-rays: binaries
time
Astrophysics - High Energy Astrophysical Phenomena
Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of
Swift J1658.2-4242
during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.
A Pseudodisk Threaded with a Toroidal and Pinched Poloidal Magnetic Field Morphology in the HH 211 Protostellar System
期刊论文
OAI收割
The Astrophysical Journal, 2019, 卷号: 879, 期号: 2
作者:
Lee,Chin-Fei
;
Kwon,Woojin
;
Jhan,Kai-Syun
;
Hirano,Naomi
;
Hwang,Hsiang-Chih
  |  
收藏
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浏览/下载:12/0
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提交时间:2020/03/10
accretion, accretion disks
ISM: individual objects (HH 211)
ISM: jets and outflows
stars: formation
New clues to jet launching: The inner disks in radio loud quasars may be more stable
期刊论文
OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2019, 卷号: 62, 期号: 6, 页码: 14
作者:
Cai, ZhenYi
;
Sun, YuHan
;
Wang, JunXian
;
Zhu, FeiFan
;
Gu, WeiMin
  |  
收藏
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浏览/下载:63/0
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提交时间:2019/05/23
accretion and accretion disks
quasars
galactic jets
The Large-scale Magnetic Field of a Thin Accretion Disk with Outflows
期刊论文
OAI收割
ASTROPHYSICAL JOURNAL, 2019, 卷号: 872, 期号: 2, 页码: 12
作者:
Li, Jiawen
;
Cao, Xinwu
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收藏
  |  
浏览/下载:34/0
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提交时间:2019/04/08
accretion, accretion disks
galaxies: jets
ISM: jets and outflows
magnetic fields
The Large-scale Magnetic Field of a Thin Accretion Disk with Outflows
期刊论文
OAI收割
ASTROPHYSICAL JOURNAL, 2019, 卷号: 872, 期号: 2, 页码: 12
作者:
Li, Jiawen
;
Cao, Xinwu
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收藏
  |  
浏览/下载:33/0
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提交时间:2019/05/23
accretion, accretion disks
galaxies: jets
ISM: jets and outflows
magnetic fields
The Large-scale Magnetic Field of a Thin Accretion Disk with Outflows
期刊论文
OAI收割
The Astrophysical Journal, 2019, 卷号: 872, 期号: 2
作者:
Li,Jiawen
;
Cao,Xinwu
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收藏
  |  
浏览/下载:28/0
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提交时间:2019/05/23
accretion, accretion disks
galaxies: jets
ISM: jets and outflows
magnetic fields
Observatory science with eXTP
期刊论文
OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2019, 卷号: 62, 期号: 2, 页码: 42
作者:
in't Zand, Jean J. M.
;
Bozzo, Enrico
;
Qu, JinLu
;
Li, Xiang-Dong
;
Amati, Lorenzo
  |  
收藏
  |  
浏览/下载:130/0
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提交时间:2019/04/08
space research instruments
nuclear astrophysics
flare stars
accretion and accretion disks
mass loss and stellar winds
cataclysmic binaries
X-ray binaries
supernova remnants
active galactic nuclei
X-ray bursts
gamma-ray bursts
gravitational waves
Observatory science with eXTP
期刊论文
OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2019, 卷号: 62, 期号: 2
作者:
in't Zand, Jean J. M.
;
Bozzo, Enrico
;
Qu, JinLu
;
Li, Xiang-Dong
;
Amati, Lorenzo
  |  
收藏
  |  
浏览/下载:120/0
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提交时间:2019/05/23
Space Research Instruments
Nuclear Astrophysics
Flare Stars
Accretion And Accretion Disks
Mass Loss And Stellar Winds
Cataclysmic Binaries
X-ray Binaries
Supernova Remnants
Active Galactic Nuclei
X-ray Bursts
Gamma-ray Bursts
Gravitational Waves
Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat
期刊论文
OAI收割
Journal of High Energy Astrophysics, 2019, 卷号: 24, 页码: 30-40
作者:
HXMT
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收藏
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浏览/下载:43/0
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提交时间:2022/02/08
Accretion
accretion disks
Black hole physics
X-rays: binaries:
Swift J1658.2-4242
Astrophysics - High Energy Astrophysical Phenomena
Abstract: We present the observational results from a detailed timing analysis of the black hole candidate Swift J1658.2-4242 during its 2018 outburst with the observations of Hard X-ray Modulation Telescope (Insight-HXMT), Neutron Star Interior Composition Explorer (NICER) and AstroSat in 0.1-250 keV. The evolution of intensity, hardness and integrated fractional root mean square (rms) observed by Insight-HXMT and NICER are presented in this paper. Type-C quasi-periodic oscillations (QPOs) observed by NICER (0.8-3.5 Hz) and Insight-HXMT (1-1.6 Hz) are also reported in this work. The features of the QPOs are analyzed with an energy range of 0.5-50 keV. The relations between QPO frequency and other characteristics such as intensity, hardness and QPO rms are carefully studied. The timing and spectral properties indicate that Swift J1658.2-4242 is a black hole binary system. Besides, the rms spectra of the source calculated from the simultaneous observation of Insight-HXMT, NICER and AstroSat support the Lense-Thirring origin of the QPOs. The relation between QPO phase lag and the centroid frequency of Swift J1658.2-4242 reveals a near zero constant when < 4Hz and a soft phase lag at 6.68 Hz. This independence follows the same trend as the high inclination galactic black hole binaries such as MAXI J1659-152.
Active Galactic Nucleus Feedback in an Elliptical Galaxy with the Most Updated AGN Physics. II. High Angular Momentum Case
期刊论文
OAI收割
ASTROPHYSICAL JOURNAL, 2018, 卷号: 864, 期号: 1
作者:
Yoon, Doosoo
;
Yuan, Feng
;
Gan, Zhao-Ming
;
Ostriker, Jeremiah P.
;
Li, Ya-Ping
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收藏
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浏览/下载:27/0
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提交时间:2019/05/23
Accretion, Accretion Disks
Black Hole Physics
Galaxies: Active
Galaxies: Elliptical And Lenticular, Cd
Galaxies: Evolution
Galaxies: Nuclei