不同尺度黑洞心跳现象的统一研究，首发论文 -凯发网

the universal “heartbeat” oscillications in black hole systems accross the mass-scale

• 1、school of physics, huazhong university of science and technology, wuhan 430074, china
• 2、nicolaus copernicus astronomical center pas, bartycka 18, 00-716 warsaw, poland
• 3、center for theoretical physics, al. lotnikow 32/46, 02-668 warsaw, poland
• 4、department of astronomy, xiamen university, xiamen, fujian 361005, china
• 5、school of physics and electronics information, hubei university of education, 430205 wuhan, china
• 6、key laboratory for research in galaxies and cosmology, shanghai astronomical observatory, chinese academy of sciences, 80 nandan road, shanghai 200030, china

abstract：the hyperluminous x-ray source (hlx-1, the peak x-ray luminosity $sim 10^{42} m erg s^{-1}$) near the spiral galaxy eso 243-49 is possibly the best candidate for intermediate mass black hole (imbh), which underwent recurrent outbursts with a period of $sim 400$ days. the physical reason for this quasi-periodic variability is still unclear. we explore the possibility of radiation-pressure instability in accretion disk by modeling the light curve of hlx-1, and find that it can roughly reproduce the duration, period and amplitude of the recurrent outbursts hlx-1 with an imbh of $sim 10^5$ msun. our result provides a possible mechanism to explain the recurrent outbursts in hlx-1. we further find a universal correlation between the outburst duration and the bolometric luminosity for the bh sources with a very broad mass range (e.g., x-ray binaries, xrbs, hlx-1 and active galactic nuclei, agns), which is roughly consistent with the prediction of radiation-pressure instability of the accretion disk. these results imply that ``heartbeat" oscillations triggered by radiation-pressure instability may appears in different-scale bh systems.

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