GRS 1915+105
观测资料 历元 J2000.0 | |
---|---|
星座 | 天鹰座 |
星官 | {{{星官}}} |
赤经 | 19h 15m 11.6s[1] |
赤纬 | +10° 56' 44"[1] |
视星等(V) | |
距离 | 40.000 光年 (11.000 pc) |
光谱分类 | KIII[2] |
其他命名 | |
GRS 1915+105(或称天鹰座V1487)是由一颗规则恒星和黑洞组成的X射线双星系,它于1992年8月15日被监视全天的Granat发现[3]。“GRS”缩写自“源自GRANAT(GRANAT source)”,“1915”代表着赤经19时又15分,“105”是指以0.1度为单位的赤纬(也就是赤纬是10.5度)。近红外线的光谱也证实了此一观测[4]。这个双星系统位于天鹰座,距离11,000秒差距[5]。GRS 1915+105是银河系内已知最重的黑洞[6],质量约在10至18倍的太阳质量[7]。它也是微类星体,并且这颗黑洞以每秒1,150次的速度高速自转[8]。
银河系的超光速源
![](http://images.weserv.nl/?url=//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Merlin-GRS1915.gif/220px-Merlin-GRS1915.gif)
在1994年,GRS 1915+105的喷流成为所知的第一个银河系内的超光速源[9]。
使用高分辨率的电波望远镜,如甚大天线阵、MERLIN和甚长基线干涉测量等的观测设备,显示出在两极喷出无线电频率的同步辐射双极带电粒子流。这些研究显示实际速度约为光速90%的喷流,明显的有着相对论效应所谓的相对论性畸变超光速运动[5]。
成长的控制
回顾钱卓X射线天文台过去十年的观测显示,GRS 1915+105似乎有自我控制成长的机制。喷流喷出的物质不定期的会被由吸积盘吹出的热风截断,这阵风剥夺了维持喷流所需要的材料。当风沉寂时,喷流就返回了[10]。
参考资料
- ^ 1.0 1.1 Liu, Q. Z; Van Paradijs, J; Van Den Heuvel, E. P. J. A catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth edition). Astronomy and Astrophysics. 2007, 469 (2): 807. Bibcode:2007A&A...469..807L. arXiv:0707.0544
. doi:10.1051/0004-6361:20077303.
- ^ Abubekerov, M. K; Antokhina, E. A; Cherepashchuk, A. M; Shimanskii, V. V. The mass of the compact object in the low-mass X-ray binary 2S 0921-630. Astronomy Reports. 2006, 50 (7): 544. Bibcode:2006ARep...50..544A. arXiv:1201.4689
. doi:10.1134/S1063772906070043.
- ^ Castro-Tirado, A. J; Brandt, S; Lund, N. Grs 1915+105. IAU Circ. 1992, 5590: 2. Bibcode:1992IAUC.5590....2C.
- ^ Castro-Tirado, A. J; Geballe, T. R; Lund, N. Infrared Spectroscopy of the Superluminal Galactic Source GRS 1915+105 During the September 1994 Outburst. Astrophysical Journal Letters. 1996, 461 (2): L99. Bibcode:1996ApJ...461L..99C. doi:10.1086/310009.
- ^ 5.0 5.1 Fender, R. P; Garrington, S. T; McKay, D. J; Muxlow, T. W. B; Pooley, G. G; Spencer, R. E; Stirling, A. M; Waltman, E. B. MERLIN observations of relativistic ejections from GRS 1915+105. Monthly Notices of the Royal Astronomical Society. 1999, 304 (4): 865. Bibcode:1999MNRAS.304..865F. arXiv:astro-ph/9812150
. doi:10.1046/j.1365-8711.1999.02364.x.
- ^ A Very Massive Stellar Black Hole in the Milky Way Galaxy. [2017-11-25]. (原始内容存档于2020-10-26).
- ^ Greiner, J. Grs 1915+105: arXiv:astro–ph/0111540. 2001. Bibcode:2001astro.ph.11540G. arXiv:astro-ph/0111540
.
- ^ Jeanna Bryne. Pushing the Limit: Black Hole Spins at Phenomenal Rate. space.com. [2017-11-25]. (原始内容存档于2021-01-25).
- ^ Mirabel, I. F; Rodríguez, L. F. A superluminal source in the Galaxy. Nature. 1994, 371 (6492): 46. Bibcode:1994Natur.371...46M. doi:10.1038/371046a0.
- ^ An Erratic Black Hole Regulates Itself (新闻稿). NASA. 2009-03-25 [2009-04-16]. (原始内容存档于2017-07-09).
<references>
标签中name属性为“reid”的参考文献没有在文中使用外部链接
- A Very Massive Stellar Black Hole in the Milky Way Galaxy November 28, 2001 (ESO)
- Simbad (页面存档备份,存于互联网档案馆)
- Image V1487 Aquilae
- O maior buraco negro estelar da Via Láctea (The biggest stellar black hole of the Milky Way) (页面存档备份,存于互联网档案馆) - in Portuguese.
- GRS 1915+105(页面存档备份,存于互联网档案馆)
- MICRO-QUASAR WITHIN OUR GALAXY
- Image The IBIS/ISGRI 20-40 keV ( width and height) image, showing the location of GRS 1915+105 and three other bright sources in the field, including the new transient IGR J19140+098 discovered during this observation. North is up and East is to the left.[永久失效链接]
- A SPI 100-200 keV image of GRS 1915+105. GRS 1915+105 is clearly visible at the center of the image (marked). The three other sources seen in Fig. 2 are much fainter in this energy range and not visible.[永久失效链接]
- The micro quasar GRS 1915+105