2003A&A...400..633D


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.23CEST18:44:52

2003A&A...400..633D - Astronomy and Astrophysics, volume 400, 633-641 (2003/3-3)

Burst-properties as a function of mass accretion rate in GX 3+1.

DEN HARTOG P.R., IN'T ZAND J.J.M., KUULKERS E., CORNELISSE R., HEISE J., BAZZANO A., COCCHI M., NATALUCCI L. and UBERTINI P.

Abstract (from CDS):

object{GX 3+1} is a low-mass X-ray binary that is persistently bright since its discovery in 1964. It was found to be an X-ray burster twenty years ago proving that the compact object in this system is a neutron star. The burst rate is so low that only 18 bursts were reported prior to 1996. The Wide Field Cameras on BeppoSAX have, through a dedicated monitoring program on the Galactic center region, increased the number of X-ray bursts from GX 3+1 by 61. Since GX 3+1 exhibits a slow (order of years) modulation in the persistent flux of about 50%, these observations opens up the unique possibility to study burst properties as a function of mass accretion rate for very low burst rates. This is the first time that bursts are detected from GX 3+1 in the high state. From the analysis we learn that all bursts are short with e-folding decay times smaller than 10s. Therefore, all bursts are due to unstable helium burning. Furthermore, the burst rate drops sixfold in a fairly narrow range of 2-20keV flux; we discuss possible origins for this.

Abstract Copyright:

Journal keyword(s): accretion, accretion discs - binaries: close - stars: individual: GX 3+1 - stars: neutron - X-rays: bursts

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           F 4682 1
2 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5456 4
3 V* BR Cir HXB 15 20 40.85 -57 10 00.1   21.4 21.4     ~ 707 1
4 4U 1705-44 LXB 17 08 54.470 -44 06 07.35           ~ 346 0
5 X Sgr X-1 LXB 17 47 56.0 -26 33 49           ~ 338 0
6 V* V5512 Sgr LXB 18 14 31.55 -17 09 26.7           K5III 344 0
7 V* NP Ser LXB 18 16 01.389 -14 02 10.62   18.8       K 590 2
8 V* V4634 Sgr LXB 18 29 28.2 -23 47 49 18.90 19.40 19     ~ 277 0
9 V* V1341 Cyg LXB 21 44 41.1544523872 +38 19 17.065856122 15.00 15.20 14.7     A9III 1057 0

    Equat.    Gal    SGal    Ecl

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2019.07.23-18:44:52

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