2010ApJ...716..181J


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST03:03:14

2010ApJ...716..181J - Astrophys. J., 716, 181-186 (2010/June-2)

Transition to the disk dominant state of a new ultraluminous X-ray source in M82.

JIN J., FENG H. and KAARET P.

Abstract (from CDS):

We report on the identification of a third, new ultraluminous X-ray source in the starburst galaxy M82. Previously, the source was observed at fluxes consistent with the high state of Galactic black hole binaries (BHBs). We observe fluxes up to (6.5±0.3)x1039 erg/s in the ultraluminous regime. When the source is not in the low/hard state, spectral fitting using a multicolor disk model shows that the disk luminosity varies as the disk inner temperature raised to the power 4.8±0.9, consistent with the behavior of Galactic BHBs in the thermal dominant state. Fitting the spectrum with a multicolor disk model with general relativistic corrections suggests that the source harbors a rapidly spinning black hole with a mass less than 100 solar masses. A soft excess was found in the source spectrum that could be blackbody emission from a photosphere created by a massive outflow. The source also showed soft dips during a flare.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - X-rays: individual (CXOM82 J095546.6+694041 = X37.8+54)

Nomenclature: Paragr. 1: [KPZ2001] X37.8+54 added.

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME IC 10 X-1 HXB 00 20 29.09 +59 16 51.9           ~ 148 0
2 RX J004732.9-251748 ULX 00 47 32.97 -25 17 50.2           ~ 32 0
3 [RVZ2004] 37.54+53.2 Rad 09 55 46.34 +69 40 39.3           ~ 2 0
4 CXOU J095546.5+694040 HXB 09 55 46.45 +69 40 40.3           ~ 17 1
5 NAME M82 ULX-1 UX? 09 55 50.01 +69 40 46.0           ~ 241 1
6 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5336 6
7 Suzaku J1305-4931 X 13 05.0 -49 31           ~ 4 0
8 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1265 2
9 [FK2005] 23 ULX 13 29 38.62 +58 25 05.6           ~ 109 2
10 X Nor X-1 LXB 16 34 01.610 -47 23 34.80           ~ 418 0
11 SS 433 HXB 19 11 49.5645897701 +04 58 57.824087535   16.3 13.0     A7Ib: 1928 3
12 Granat 1915+105 LXB 19 15 11.54938 +10 56 44.7585           ~ 2285 0

    Equat.    Gal    SGal    Ecl

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2020.07.13-03:03:14

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