2011MNRAS.415.3344K

Query : 2011MNRAS.415.3344K

2011MNRAS.415.3344K - Mon. Not. R. Astron. Soc., 415, 3344-3348 (2011/August-3)

Mass and radius estimation for the neutron star in the X-ray burster 4U 1820-30.

KUSMIEREK K., MADEJ J. and KUULKERS E.

Abstract (from CDS):

We present a new method for determining masses and radii of neutron stars residing in thermonuclear X-ray burst sources. To illustrate this method, we apply it to a burst from the source 4U 1820-30 recorded by the Rossi X-Ray Timing Explorer. Fits of the observed X-ray spectra to grids of Comptonized model atmospheres yield estimates for the mass and radius of the neutron star, M= 1.3±0.6 M☉ and R= 11+3_- 2_km, respectively.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): stars: individual: 4U 1820-30 - stars: neutron - X-rays: bursts

Simbad objects: 3

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Number of rows : 3
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 NAME Slow Burster LXB 17 31 58.0 -33 49 58     15.50     ~ 865 1
2 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 939 1
3 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 1056 1

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