2017AcA....67..171M

Query : 2017AcA....67..171M

2017AcA....67..171M - Acta Astron., 67, 171-180 (2017/May-0)

Accuracy of Mass and Radius Determination for Neutron Stars in X-ray Bursters from Simulated LOFT Spectra.

MAJCZYNA A., MADEJ J., ROZANSKA A. and NALEZYTY M.

Abstract (from CDS):

We present a simulation of an X-ray spectrum of a hot neutron star, as would be seen by the LAD detector on board of LOFT satellite. We also compute a grid of theoretical spectra corresponding to a range of effective temperatures Teff and surface gravities log g with values corresponding to compact stars in Type I X-ray bursters. A neutron star with the mass M =1.64 ,M☉ and the radius R =11.95 km (which yields the surface gravity log g =14.30 [cgs] and the surface redshift z =0.30) is used in simulation. Accuracy of mass and radius determination by fitting theoretical spectra to the observed one is found to be M=1.64+0.16–0.02 M☉ and R =11.95+1.57–0.40 km (2σ). The confidence contours for these two variables are narrow but elongated, and therefore the resulting constraints on the EOS cannot be strong. Note, that in this paper we aim to discuss error contours of NS mass and radius, whereas discussion of EOS is beyond the scope of this work.

Abstract Copyright: ∼

Journal keyword(s): Stars: neutron - X-rays: bursts - Space vehicles: instruments

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 NAME Rapid Burster LXB 17 33 24.0 -33 23 19           ~ 429 2

Query : 2017AcA....67..171M

Basic data :
NAME Rapid Burster -- Low Mass X-ray Binary
Other object types: otypes_help 		X (2022MNRAS,4U,...), LXB (2013ApJS), GlC (2007ApJS), gam (INTREF)
ICRS coord. (ep=J2000) : 		17 33 24.0 -33 23 19 (X-ray) [ 5000 5000 90 ] D 2022A&A...661A..38P
FK4 coord. (ep=B1950 eq=1950) : 		17 30 06.5 -33 21 16 [ 5000 5000 90 ]
Gal coord. (ep=J2000) : 		354.8400 -00.1585 [ 5000 5000 90 ]
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Identifiers (15) :
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4U 1730-335 MXB 1730-33 PBC J1733.4-3322 XB 1730-333
CXOU J173324.1-332316 MXB 1730-335 2S 1730-335 [BM83] X1730-333
H 1730-333 NAME Rapid Burster SRGA J173324.0-332319 [KRL2007b] 248
INTREF 791 NAME the Rapid Burster SWIFT J1733.5-3325

References (429 between 1850 and 2026) (Total 429)
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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Distance : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NAME Rapid Burster

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