M82 X-1

M82 X-1 is an ultra-luminous X-ray source located in the galaxy M82. It is a candidate intermediate-mass black hole, with the exact mass estimate varying from around 100 to 1000.[1][2][3] One of the most luminous ULXs ever known, its mass goes over the Eddington limit.

M82 X-1
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Ursa Major
Right ascension  09h 55m 50.01s
Declination 69° 40′ 46.0″


References
  1. Fiorito, Ralph; Titarchuk, Lev (2004). "Is M82 X-1 Really an Intermediate-Mass Black Hole? X-Ray Spectral and Timing Evidence". The Astrophysical Journal. 614 (2): L113–L116. arXiv:astro-ph/0409416. Bibcode:2004ApJ...614L.113F. doi:10.1086/425736.
  2. Brightman, Murray; Harrison, Fiona A.; Barret, Didier; Davis, Shane W.; Fürst, Felix; Madsen, Kristin K.; Middleton, Matthew; Miller, Jon M.; Stern, Daniel; Tao, Lian; Walton, Dominic J. (2016). "A Broadband X-Ray Spectral Study of the Intermediate-mass Black Hole Candidate M82 X-1 with NuSTAR, Chandra, and Swift". The Astrophysical Journal. 829 (1): 28. arXiv:1607.03903. Bibcode:2016ApJ...829...28B. doi:10.3847/0004-637X/829/1/28.
  3. "Strange case of M82 X-1: A rare midsize black hole | EarthSky.org". earthsky.org. Retrieved 2019-03-03.
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