INTEGRAL detection of a long powerful burst from SLX 1735-269

2004/08/13 by S. Molkov, M. Revnivtsev, A. Lutovinov +1 · 3 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph

paper · pdf · doi:10.1051/0004-6361:20041846

published as Astron.Astrophys. 434 (2005) 1069-1075 · 8 pages, 6 figures, submitted for the publication in Astronomy & Astrophysics

arxiv created 2004/08/13 · openalex publication_date 2005/04/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We present results of an analysis of the bursting behavior of the low mass X-ray binary system SLX 1735-269 during INTEGRAL observations of the Galactic Center region in 2003. Six type-I X-ray bursts were detected in total with one being much longer and more powerful then the others. A strong dependence of the burst recurrence time on the mass accretion rate is observed, that is likely caused by a change in the burning regime. The long burst demonstrated a photospheric radius expansion. We discuss possible scenarios of this long burst and show that it is unlikely a carbon burning flash but rather burning of a large pile of hydrogen and helium accelerated by electron capture processes in a dense accumulated layer.

Citations

• A hard X-ray survey of the Galactic-Center region with the IBIS telescope of the INTEGRAL observatory: A catalog of sources

Cited by

• Evidence of heavy-element ashes in thermonuclear X-ray bursts with photospheric superexpansion
• Thermonuclear (Type I) X‐Ray Bursts Observed by theRossi X‐Ray Timing Explorer
• The INTEGRAL Galactic bulge monitoring program: the first 1.5 years