⏾ Concept Map

GRS 1915+105 ❍ Entries

↩ 🔵 🔵 🔵

Primary

၊၊||၊|။

GRS 1915+105 ❍｜Definition｜1st｜20251119205401-00-⌔

GRS 1915+105 - Wikipedia

GRS 1915+105

📊 ➺ 🖼️ ➺

GRS 1915+105 or V1487 Aquilae is an X-ray binary star system containing a main sequence star and a black hole. Transfer of material from the star to the black hole generates a relativistic jet, making this a microquasar system. The jet exhibits apparent superluminal motion.

It was discovered on August 15, 1992 by the WATCH all-sky monitor aboard Granat.1 “GRS” stands for “GRANAT source”, “1915” is the right ascension (19 hours and 15 minutes) and “105” reflects the approximate declination (10 degrees and 56 arcminutes). The near-infrared counterpart was determined by spectroscopic observations.2

The binary system lies 11,000 parsecs away3 in Aquila. The black hole in GRS 1915+105 is 10 to 18 solar masses4. The black hole rotates at least 950 times per second, giving it a spin parameter >0.82 (1.0 is the theoretical maximum).56

Printed 2026-06-28.

(echo:: @ ᯤ)

Footnotes

  1. Castro-Tirado, A. J; Brandt, S; Lund, N (1992). “Grs 1915+105”. IAU Circ (5590): 2. Bibcode:1992IAUC.5590…2C. ↩

  2. Castro-Tirado, A. J; Geballe, T. R; Lund, N (1996). “Infrared Spectroscopy of the Superluminal Galactic Source GRS 1915+105 During the September 1994 Outburst”. Astrophysical Journal Letters. 461 (2): L99. Bibcode:1996ApJ…461L..99C. doi:10.1086/310009. S2CID 122041186. ↩

  3. 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 (1999). “MERLIN observations of relativistic ejections from GRS 1915+105”. Monthly Notices of the Royal Astronomical Society. 304 (4): 865. arXiv:astro-ph/9812150. Bibcode:1999MNRAS.304..865F. doi:10.1046/j.1365-8711.1999.02364.x. S2CID 144364. ↩

  4. Greiner, J. (2001). “GRS 1915+105”. arXiv:astro-ph/0111540. ↩

  5. Jeffrey E. McClintock; Rebecca Shafee; Ramesh Narayan; Ronald A. Remillard; Shane W. Davis; Li-Xin Li (2006). “The Spin of the Near-Extreme Kerr Black Hole GRS 1915+105”. Astrophysical Journal. 652 (1): 518–539. arXiv:astro-ph/0606076. Bibcode:2006ApJ…652..518M. doi:10.1086/508457. S2CID 1762307. ↩

  6. Jeanna Bryne. “Pushing the Limit: Black Hole Spins at Phenomenal Rate”. space.com. Retrieved 2017-11-25. ↩

Link to original

၊၊||၊|။

GRS 1915+105 ❍｜SIMBAD｜1st｜20251021001049-00-●

GRS 1915+105
(echo:: @ ᯤ)

Link to original

Secondary

• • •