2023ApJ...954...62D

Query : 2023ApJ...954...62D

2023ApJ...954...62D - Astrophys. J., 954, 62 (2023/September-1)

An Extreme Black Hole in the Recurrent X-Ray Transient XTE J2012+381.

DRAGHIS P.A., MILLER J.M., BRUMBACK M.C., FABIAN A.C., TOMSICK J.A. and ZOGHBI A.

Abstract (from CDS):

The black hole (BH) candidate XTE J2012+381 underwent an outburst at the end of 2022. We analyzed 105 NICER observations and two NuSTAR observations of the source during the outburst. The NuSTAR observations of the M ∼ 10 M_⊙ BH indicate clear signs of relativistic disk reflection, which we modeled to measure a BH spin of $a={0.988}_{-0.030}^{+0.008}$ and an inclination of $\theta ={68}_{-11}^{+6}$ deg (1σ statistical errors). In our analysis, we test an array of models and examine the effect of fitting NuSTAR spectra alone versus fitting simultaneously with NICER. We find that when the underlying continuum emission is properly accounted for, the reflected emission is similarly characterized by multiple models. We combined 52 NICER spectra to obtain a spectrum with an effective exposure of 190 ks in order to probe the presence of absorption lines that would be suggestive of disk winds, but the resulting features were not statistically significant. We discuss the implications of this measurement in relation to the overall BH spin distribution in X-ray binary systems.

Journal keyword(s): Black holes - Astrophysical black holes - High energy astrophysics - Accretion - X-ray binary stars

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	INTREF 1012	LXB	20 12 37.7592785736	+38 11 00.770922096			21.33			~	78	0

Query : 2023ApJ...954...62D

Basic data :

INTREF 1012 -- Low Mass X-ray Binary

LXB (), X (XTE,[WW2002]), HX? (2016ApJS), * (Gaia), gam (INTREF)

20 12 37.7592785736 +38 11 00.770922096 (Optical) [ 0.0555 0.0598 90 ] A 2020yCat.1350....0G

20 10 47.9778089200 +38 01 56.350551382 [ 0.0555 0.0598 90 ]

075.3883959227142 +02.2467512122638 [ 0.0555 0.0598 90 ]

-3.978 -6.588 [0.072 0.078 90] A 2020yCat.1350....0G

0.1859 [0.0719] A 2020yCat.1350....0G

V 21.33 [~] D 2007A&A...469..807L

G 17.517378 [0.002877] C 2020yCat.1350....0G

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`INTREF 1012`	`[WW2002] 14`	`Gaia DR3 2061673641720429312`
`XTE J2012+381`	`Gaia DR2 2061673641720429312`

References (78 between 1850 and 2026) (Total 78)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Gaia DR2 2061673641720429312 Gaia DR3 2061673641720429312

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