黑洞潮汐撕裂恒星事件及其回响
Tidal disruption events and their echoes
-
摘要: 超大质量黑洞普遍存在于星系中心,当星系中一颗恒星运动足够靠近黑洞时,会被黑洞的潮汐力撕裂瓦解,产生一个主要能量在软X 射线到紫外的耀发事件,称为恒星潮汐撕裂事件(TDE)。作为黑洞特殊的爆发性吸积事件,TDE正成为蓬勃发展的时域天文的主要研究目标之一。虽然TDE很罕见,但它蕴含的巨大科学价值逐渐引起了人们的兴趣和关注,有助于理解黑洞吸积相关的物理。除此之外,TDE照射在黑洞周围星际介质上还会产生气体和尘埃的回响信号,不仅为探测星系核区的星际介质环境提供了有效手段,还揭示了一种全新的探测TDE的途径,尤其是被尘埃遮蔽的源。作者基于此做出了一系列开创性的前沿研究。Abstract: Supermassive black holes are widely believed to be present in the center of massive galaxies. When a star passes too close to the black hole, it will be tidally disrupted and partially accreted, producing a flash of radiation over an energy range from soft X-ray to UV,which is called a tidal disruption event (TDE). As a special form of accretion, a TDE is one of the key topics of the explosively growing field of time-domain astronomy. Although TDEs are rare, they have aroused great interest because they can serve as a unique laboratory to study various physics problems associated with black holes. Moreover, the gas and dust echoes of TDEs not only provide us with a novel method to probe the interstellar medium in the vicinity of black holes, but also signify a new approach to detect new TDEs, particularly those obscured by dust. We report our series of advances in this field.
-
-
[1] Kormendy J,Ho L C. ARA&A,2013,51:511 [2] Genzel R,Eisenhauer F,Gillessen S. Reviews of Modern Physics,2010,82:3121 [3] Phinney E S. The Center of the Galaxy,1989,136:543 [4] Rees M J. Nature,1988,333:523 [5] Komossa S. Journal of High Energy Astrophysics,2015,7:148 [6] Yang C,Wang T,Ferland G J et al. ApJ,2017,846:150 [7] Greene J E. Nature Communications,2012,3:1304 [8] Bloom J S,Giannios D,Metzger B D et al. Science,2011,333:203 [9] Liu F K,Li S,Chen X. ApJL,2009,706:L133 [10] Liu F K,Li S,Komossa S. ApJ,2014,786:103 [11] Leloudas G,Fraser M,Stone N C et al. Nature Astronomy,2016,1:0002 [12] Komossa S,Zhou H,Wang T et al. ApJL,2008,678:13 [13] Wang T G,Zhou H Y,Komossa S et al. ApJ,2012,749:115 [14] Yang CW,Wang T G,Ferland G et al. ApJ,2013,774:46 [15] LuW,Kumar P,Evans N J. MNRAS,2016,458:575 [16] Jiang N,Dou L,Wang T et al. ApJL,2016,828:14 [17] van Velzen S,Mendez A J,Krolik J H et al. ApJ,2016,829:19 [18] Dou L,Wang T,Jiang N et al. ApJ,2016,832:188 [19] Tadhunter C,Spence R,Rose M et al. Nature Astronomy,2017,1:0061 [20] Dou L,Wang T,Yan L et al. ApJL,2017,841:8 [21] Arcavi I,Gal-Yam A,Sullivan M et al. ApJ,2014,793:38 [22] Gezari S,Strubbe L,Bloom J S et al. 2009,astro2010:The Astronomyand Astrophysics Decadal Survey,2010 [23] YuanW,Zhang C,Feng H et al. 2015,arXiv:1506.07735
计量
- 文章访问数: 244
- HTML全文浏览量: 54
- PDF下载量: 1520