| OJ 287 | |
|---|---|
 Comparisons of large and small black holes in galaxy OJ 287 to the Solar System | |
| Observation data (Epoch J2000) | |
| Constellation | Cancer |
| Right ascension | 08h 54m 48.9s[1] |
| Declination | +20° 06′ 31″[1] |
| Redshift | 0.306000 [1] |
| Distance | 4 Gly (1.226 Gpc) |
| Type | BL Lac[1] |
| Apparent magnitude (V) | 15.43[2] |
| Other designations | |
| EGO 0851+202,[1] 3EG J0853+1941,[1] RGB J0854+201[1] | |
| See also: Quasar, List of quasars | |
OJ 287 is a BL Lac object 4 billion light-years from Earth that has produced quasi-periodic optical outbursts going back approximately 120 years, as first apparent on photographic plates from 1891. Seen on photographic plates since at least 1887,[3] it was first detected at radio wavelengths during the course of the Ohio Sky Survey. It is a supermassive black hole binary (SMBHB).[4] The intrinsic brightness of the flashes corresponds to over a trillion times the Sun's luminosity, greater than the entire Milky Way galaxy's light output.[5]
- ^ a b c d e f g "NED results for object OJ +287". NASA/IPAC Extragalactic Database. Retrieved 2008-07-10.
- ^ "QSO J0854+2006". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 March 2018.
- ^ Camille M. Carlisle (13 January 2015). "Black Hole Binary En Route to Merger?". Sky & Telescope.
- ^ Laine, S.; Dey, L.; Valtonen, M.; Gopakumar, A.; Zola, S.; Komossa, S.; Kidger, M.; Pihajoki, P.; Gómez, J.L.; Caton, D.; Ciprini, S.; Drozdz, M.; Gazeas, K.; Godunova, V.; Haque, S.; Hildebrandt, F.; Hudec, R.; Jermak, H.; Kong, A.K.H.; Lehto, H.; Liakos, A.; Matsumoto, K.; Mugrauer, M.; Pursimo, T.; Reichart, D.E.; Simon, A.; Siwak, M.; Sonbas, E. (2020). "Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287" (PDF). The Astrophysical Journal. 894 (1): L1. arXiv:2004.13392. Bibcode:2020ApJ...894L...1L. doi:10.3847/2041-8213/ab79a4. S2CID 216562421.
- ^ Cite error: The named reference
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