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Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070

文献类型：期刊论文

作者HXMT
刊名Monthly Notices of the Royal Astronomical Society
出版日期2021
ISSN号0035-8711
关键词black hole physics Low Mass X-ray Binaries accretion accretion discs stars: individual (MAXI J1820+070) Astrophysics - High Energy Astrophysical Phenomena Abstract: We present high-speed optical photometry from SAAO and SALT on the black hole LMXB MAXI J1820+070 (ASSASN-18ey), some of it simultaneous with NICER, Swift and Insight-HXMT X-ray coverage. We detect optical Quasi-Periodic Oscillations (QPOs) that move to higher frequencies as the outburst progresses, tracking both the frequency and evolution of similar X-ray QPOs previously reported. Correlated X-ray/optical data reveal a complex pattern of lags, including an anti-correlation and a sub-second lag that evolve over the first few weeks of outburst. They also show correlated components separated by a lag equal to the QPO period roughly centered on zero lag, implying that the inter-band variability is strongly and consistently affected by these QPOs at a constant phase lag of roughly ±Ю The synchronisation of X-ray and optical QPOs indicates that they must be produced in regions physically very close to each other we thus propose that they can be explained by a precessing jet model, based on analogies with V404 Cyg and MAXI J1348-630.
DOI10.1093/mnrasl/slab132
文献子类Journal Article
语种英语
源URL[http://ir.ihep.ac.cn/handle/311005/291324]  
专题硬X射线调制望远镜卫星
推荐引用方式
GB/T 7714		 HXMT. Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070[J]. Monthly Notices of the Royal Astronomical Society,2021.
APA HXMT.(2021).Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070.Monthly Notices of the Royal Astronomical Society.
MLA HXMT."Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070".Monthly Notices of the Royal Astronomical Society (2021).

入库方式： OAI收割

来源：高能物理研究所

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