2011A&A...525A.111I


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET07:08:06

2011A&A...525A.111I - Astronomy and Astrophysics, volume 525A, 111-111 (2011/1-1)

Achromatic late-time variability in thermonuclear X-ray bursts. An accretion disk disrupted by a nova-like shell?

IN'T ZAND J.J.M., GALLOWAY D.K. and BALLANTYNE D.R.

Abstract (from CDS):

An unusual Eddington-limited thermonuclear X-ray burst was detected from the accreting neutron star in 2S 0918-549 with the Rossi X-ray Timing Explorer. The burst commenced with a brief (40ms) precursor and maintained near-Eddington fluxes during the initial 77s. These characteristics are indicative of a nova-like expulsion of a shell from the neutron star surface. Starting 122s into the burst, the burst shows strong (87±1% peak-to-peak amplitude) achromatic fluctuations for 60s. We speculate that the fluctuations are caused by Thompson scattering by fully-ionized inhomogeneities in a resettling accretion disk that was disrupted by the effects of super-Eddington fluxes. An expanding shell may be the necessary prerequisite for the fluctuations.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - X-rays: binaries - X-rays: bursts - X-rays: individual: 2S 0918-549

Simbad objects: 8

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Number of rows : 8

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     ~ 521 1
2 4U 0919-54 LXB 09 20 26.4814865475 -55 12 24.507988707 20.40 21.30 21.0     ~ 148 0
3 4U 1246-58 LXB 12 49 39.364 -59 05 14.68   19.24 18.99     ~ 81 0
4 V* QX Nor LXB 16 12 43.0 -52 25 23           ~ 846 1
5 V* V801 Ara LXB 16 40 55.5979962948 -53 45 04.953475039 17.50 18.20 17.5   17.07 ~ 799 1
6 1ES 1735-26.9 LXB 17 38 17.12 -26 59 38.6           ~ 152 0
7 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 920 1
8 CXOU J212958.1+121002 XB* 21 29 58.06 +12 10 02.6     16.6     ~ 65 1

    Equat.    Gal    SGal    Ecl

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2021.03.06-07:08:06

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