2006A&A...455.1031K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.17CEST23:05:24

2006A&A...455.1031K - Astronomy and Astrophysics, volume 455, 1031-1036 (2006/9-1)

The superburst recurrence time in luminous persistent LMXBs.

KEEK L., IN'T ZAND J.J.M. and CUMMING A.

Abstract (from CDS):

Theory and observations favor stable helium burning as the most important means to produce fuel for superbursts on neutron star surfaces. However, all known superbursters exhibit unstable burning as well. This ambiguity prompted us to search for superbursts in data from the BeppoSAX Wide Field Cameras of ten luminous LMXBs, most of which do not exhibit normal type-I X-ray bursts. We found no superbursts and determine a lower limit on the recurrence time which varies between 30 and 76 days (90% confidence). All recurrence time limits except one are longer than the observed recurrence time for GX 17+2. This difference can be understood if the mass accretion rate in GX 17+2 is several tens of percent higher than in the other sources; alternatively, the accreted material in GX 17+2 might be hydrogen deficient, leading to larger carbon yields than in the other sources. We compare our results to the latest models of superbursts. As our search method is indiscriminate of the burst ignition scenario, the recurrence time limits may also be applied to other bursts of similar duration and brightness.

Abstract Copyright:

Journal keyword(s): stars: neutron - X-rays: binaries - X-rays: bursts

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* V1055 Ori LXB 06 17 07.3 +09 08 13   18.80 18.5     ~ 522 1
2 V* V818 Sco LXB 16 19 55.0688745859 -15 38 25.019920749 11.60 12.40 11.1     Oev 1544 0
3 V* V801 Ara LXB 16 40 55.5979962948 -53 45 04.953475039 17.50 18.20 17.5   17.07 ~ 803 1
4 4U 1642-45 LXB 16 45 47.7 -45 36 40     14.30     ~ 388 1
5 V* V1101 Sco LXB 17 05 44.4915929414 -36 25 23.049863107   20.10 18.6     ~ 414 0
6 V* V2216 Oph LXB 17 31 44.17 -16 57 40.9 16.40 17.10 16.8     ~ 266 1
7 NAME Slow Burster LXB 17 31 57.73 -33 50 02.5     15.50     ~ 775 1
8 4U 1758-25 LXB 18 01 09.7308941918 -25 04 44.128444504     11.08     ~ 624 1
9 X Sgr X-3 LXB 18 01 32.3 -20 31 44           ~ 221 1
10 V* V5512 Sgr LXB 18 14 31.55 -17 09 26.7     12.73     K5III 359 0
11 V* NP Ser LXB 18 16 01.389 -14 02 10.62   18.8       K 608 2
12 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 921 1
13 V* V1341 Cyg LXB 21 44 41.1544523872 +38 19 17.065856122 15.00 15.13 14.68 15.00   A9III 1094 1

    Equat.    Gal    SGal    Ecl

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2021.04.17-23:05:24

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