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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 solar masses. One of the most luminous ULXs ever known, its luminosity exceeds the Eddington limit for a stellar mass object.

See also

• M82 X-2

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. S2CID 10183683.
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. S2CID 19765183.
3. "Strange case of M82 X-1: A rare midsize black hole | EarthSky.org". earthsky.org. 19 August 2014. Retrieved 2019-03-03.

External links

• Dying Star Reveals More Evidence for New Kind of Black Hole Archived 2021-11-20 at the Wayback Machine
• A medium-sized black hole? Archived 2010-01-13 at the Wayback Machine

v t e Constellation of Ursa Major
Stars	Bayer α (Dubhe) β (Merak) γ (Phecda) δ (Megrez) ε (Alioth) ζ (Mizar) η (Alkaid) θ ι (Talitha) κ (Alkaphrah) λ (Tania Borealis) μ (Tania Australis) ν (Alula Borealis) ξ (Alula Australis) ο (Muscida) π π ρ σ σ τ υ φ χ (Taiyangshou) ψ ω Flamsteed 2 (A) 5 (b) 6 15 (f) 16 (c) 17 18 (e) 19 20 21 22 23 (h) 24 (d) 26 27 28 31 32 35 36 37 38 39 40 41 42 43 44 46 47 (Chalawan) 49 51 55 56 57 58 59 60 61 62 65 66 67 68 70 71 72 73 74 75 76 78 80 (Alcor) 81 82 83 84 86 55 Cam 56 Cam 57 Cam 1 CVn 14 LMi 15 LMi 25 LMi 47 LMi 37 Lyn 39 Lyn 41 Lyn (Intercrus) Variable R T U W Z RV ST SU SW SX TU TX TY UX UY VV VX VY XY ZZ AA AB AE AN AR AW BC BE BM BZ CG CH CO CQ CY DH DI DM DV DW EE EG EI EK EN EP ER ET EU EV EZ IY KS HR 3922 4067 4098 4132 4867 5148 HD 68988 (Násti) 74389 80606 80607 84406 98618 99706 118203 (Liesma) 233731 Other ADS 7251 Feige 55 G 196-3 Gliese 338 Gliese 412 Gliese 414 GJ 3512 Groombridge 1618 Groombridge 1830 HAT-P-3 (Dombay) HAT-P-13 HAT-P-21 (Mazaalai) HIP 57050 HIP 57274 1SWASP J093010.78+533859.5 KELT-24 Lalande 21185 M82 X-1 M82 X-2 Qatar-8 Sidus Ludoviciana SN H0pe UGC 5497 US 708 Winnecke 4 WISE 1405+5534 XTE J1118+480
Exoplanets 47 Ursae Majoris b (Taphao Thong) c (Taphao Kaew) d ο Ursae Majoris b 41 Lyncis b (Arkas) Gliese 414 Ab c HAT-P-3b (Teberda) HD 80606 b HD 89744 b KELT-24b
Nebulae Owl Nebula
Galaxies	Messier 81 (Bode's Galaxy) 82 (Cigar Galaxy) 101 (Pinwheel Galaxy) 108 109 NGC 2603 2606 2681 2685 2688 2768 2787 2800 2805 2814 2841 2857 2950 2959 2976 2985 2998 3005 3006 3008 3009 3073 3077 3079 3184 3191 3198 3206 3259 3310 3319 3353 3359 3435 3445 3448 3516 3539 3545B 3550 3552 3553 3554 3358 3561 3583 3610 3613 3619 3631 3642 3656 3665 3669 3675 3690 3718 3726 3729 3738 3741 3786 3794 3877 3893 3898 3921 3928 3938 3941 3945 3949 3953 3972 3982 3985 3994 3995 3998 4013 4026 4036 4041 4051 4088 4096 4100 4102 4144 4157 4194 4500 4605 5001 5164 5201 5204 5256 5278 5279 5308 5322 5422 5473 5474 5477 5486 5502 5585 Other 2MASX J10222849+5006200 3C 219 3C 244.1 3C 268.3 CEERS-2112 Haro 2 Holmberg IX I Zwicky 18 IC 923 IC 2574 IRAS F11119+3257 Markarian 231 Markarian 273 Markarian 421 Mayall's Object SBS 0953+549 SDSS J1148+5251 UGC 4879 UGC 5101 UGC 6945 UGC 8335 UGC 8508 Ursa Major III
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