2019RAA....19...26M

Query : 2019RAA....19...26M

2019RAA....19...26M - Research in Astron. and astroph., 19, 26-26 (2019/February-0)

Analytical model of compact star in low-mass X-ray binary with de Sitter spacetime.

MOLLA S., ISLAM R., KAYUM JAFRY M.A. and KALAM M.

Abstract (from CDS):

In this article, we suggest a Sitter model in favor of compact stars in low-mass X-ray binaries. Here, we have considered the presence of a cosmological constant (on a small scale) to investigate the stellar structure. We conclude that this approach is very suitable for the familiar physical model of compact stars in low-mass X-ray binaries. We calculate the probable radius, compactness (u) and surface redshift (Zs) of six compact stars in low-mass X-ray binaries, namely Cyg X-2, V395 Carinae/2S 0921-630, XTE J2123-058, X1822-371 (V691 CrA), 4U 1820-30 and GR Mus (XB 1254-690). We also offer a possible equation of state (EOS) for the stellar objects.

Abstract Copyright: ∼

Journal keyword(s): stars: low-mass - stars: mass function - equation of state

Simbad objects: 6

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Number of rows : 6
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 V* V395 Car LXB 09 22 34.6761959832 -63 17 41.355773520 15.40 16.104 15.455     K0III 143 0
2 V* GR Mus LXB 12 57 37.1833002949 -69 17 18.996899563   19.40 19.1     ~ 275 0
3 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 1056 1
4 V* V691 CrA LXB 18 25 46.8185061768 -37 06 18.529336656 14.30 15.20 15.1     ~ 461 0
5 V* LZ Aqr LXB 21 23 14.54 -05 47 52.9 15.90 16.78 16.8     ~ 154 0
6 V* V1341 Cyg LXB 21 44 41.1544345272 +38 19 17.066570988 15.00 15.13 14.68 15.00   A9III 1229 1

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