2021ApJ...923..175A

Query : 2021ApJ...923..175A

2021ApJ...923..175A - Astrophys. J., 923, 175-175 (2021/December-3)

A reflection model with a radial disk density profile.

ABDIKAMALOV A.B., AYZENBERG D., BAMBI C., LIU H. and TRIPATHI A.

Abstract (from CDS):

In this paper we present relxilldgrad_nk, a relativistic reflection model in which the electron density of the accretion disk is allowed to have a radial power-law profile. The ionization parameter also has a nonconstant radial profile and is calculated self-consistently from the electron density and the emissivity. We show the impact of the implementation of the electron density gradient in our model by analyzing a NuSTAR spectrum of the Galactic black hole in EXO 1846-031 during its last outburst in 2019 and a putative future observation of the same source with Athena and eXTP. For the NuSTAR spectrum, we find that the new model provides a better fit, but there is no significant difference in the estimation of the model parameters. For the Athena+eXTP simulation, we find that a model without a disk density profile is unsuitable to test the spacetime metric around the compact object in the sense that modeling uncertainties can incorrectly lead to finding a nonvanishing deformation from the Kerr solution.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Astrophysical black holes - Kerr black holes - Accretion - X-ray astronomy - Astronomical models

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 EXO 1846-031 LXB 18 49 17.1 -03 03 44           ~ 114 0

Query : 2021ApJ...923..175A

Basic data :
EXO 1846-031 -- Low Mass X-ray Binary
Other object types: otypes_help 		LXB (), X (2022MNRAS,EXO), HX? (2016ApJS), BH? (2019ATel13344), gam (INTREF)
ICRS coord. (ep=J2000) : 		18 49 17.1 -03 03 44 [ ] D 2003A&A...411L..59E
FK4 coord. (ep=B1950 eq=1950) : 		18 46 39.8 -03 07 12 [ ]
Gal coord. (ep=J2000) : 		029.9611 -00.9174 [ ]
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Identifiers (2) :
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EXO 1846-031 INTREF 939

References (114 between 1850 and 2026) (Total 114)
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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