2004/07/16 by M. Falanga, R. Farinelli, P. Goldoni +3 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae #astro-ph
paper · pdf · doi:10.1051/0004-6361:20041243
published as Astron.Astrophys.426:979-983,2004 · 5 pages, 6 figures, 1 table. Accepted for publication in A&A
arxiv created 2004/07/16 · openalex publication_date 2004/10/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
We report the first detection with INTEGRAL of persistent hard X-ray emission (20 to 100 keV) from the Rapid Burster (MXB 1730–335), and describe its full spectrum from 3 to 100 keV. The source was detected on February/March 2003 during one of its recurrent outbursts. The source was clearly detected with a high signal to noise ratio during the single pointings and is well distinguished from the neighboring source GX 354–0. The 3–100 keV X-ray spectrum of the persistent emission is well described by a two-component model consisting of a blackbody plus a power-law with photon index ~2.4. The estimated luminosity was ~ erg s-1 in the 3–20 keV energy band and ~ erg s-1 in the 20–100 keV energy range, for a distance of 8 kpc.