2023MNRAS.522.4323W

Query : 2023MNRAS.522.4323W

2023MNRAS.522.4323W - Mon. Not. R. Astron. Soc., 522, 4323-4331 (2023/July-1)

A moderate spin for the black hole in X-ray binary MAXI J1348-630 revealed by Insight-HXMT.

WU H., WANG W., SAI N., ZHU H. and CHEN J.

Abstract (from CDS):

MAXI J1348-630 is a low-mass X-ray black hole binary located in the Galaxy and undergone the X-ray outburst in 2019. We analysed the observation data in very soft state during the outburst between MJD 58588 and MJD 58596 based on the Insight-HXMT observations from 2 to 20 keV via the continuum fitting method to measure the spin of the stellar-mass black hole in MAXI J1348-630. The inner disc temperature and the apparent inner disc radius were found to be $0.47\pm 0.01 \rm \,\rm \,keV$ and 5.33 ± 0.10 Rg from the observation data modeled by the multicolour disc blackbody model. Assuming the distance of the source $D\sim 3.4 \rm \,kpc$ , the mass of the black hole M ∼ 11 M⊙, and the inclination of the system i ∼ 29.2°, the spin is determined to be a⋆ = 0.41 ± 0.03 for fixing hardening factor at 1.6 and $n_{H}=8.6\times 10^{21} \rm cm^{-2}$ . Besides, considering the uncertainty of the parameters D, M, i of this system, with the Monte Carlo analysis, we still confirm the moderate spin of the black hole as $a_{\star }=0.42^{+0.13}_{-0.50}$ . Some spectral parameters (e.g. column density and hardening factor) which could affect the measurements of the BH spin are also briefly discussed.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): X-rays: binaries - X-rays : individual (MAXI J1348-630) - accretion discs

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 MAXI J1348-630 HX? 13 48 12.7388336424 -63 16 29.709083208           ~ 201 0

Query : 2023MNRAS.522.4323W

Basic data :
MAXI J1348-630 -- High Mass X-ray Binary Candidate
Other object types: otypes_help 		X (MAXI,XTE), HX? (2020ApJ), * (Gaia)
ICRS coord. (ep=J2000) : 		13 48 12.7388336424 -63 16 29.709083208 (Optical) [ 1.5301 1.4483 90 ] C 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		13 44 39.8489051396 -63 01 33.324105651 [ 1.5301 1.4483 90 ]
Gal coord. (ep=J2000) : 		309.2638973211866 -01.1032834171955 [ 1.5301 1.4483 90 ]
Fluxes (1) :
G 20.974529 [0.016547] C 2020yCat.1350....0G
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Identifiers (4) :
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MAXI J1348-630 XTE J1348-630 Gaia DR2 5864596118346825600 Gaia DR3 5864596118346825600

References (201 between 1850 and 2026) (Total 201)
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Gaia DR2 5864596118346825600 Gaia DR3 5864596118346825600

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