Spectral states and transient behaviour of a sample of X-ray bursters observed by BeppoSax

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dc.creatorNatalucci, L.
dc.creatorBazzano, A.
dc.creatorCapitanio, F.
dc.creatorCocchi, M.
dc.creatorUbertini, P.
dc.creatorZand, J. J. M. in 't
dc.date2004-08-03
dc.date.accessioned2026-07-07T02:14:11Z
dc.date.available2026-07-07T02:14:11Z
dc.descriptionDuring observation campaigns of the Galactic Bulge region, BeppoSAX detected a total of 21 new X-ray bursters in about 6 years of operation. These sources are mostly transient and often feature a hard X-ray spectrum, extending up to ~ 200 keV. A hard spectrum is generally found in weak, relatively short outbursts. On the other hand two sources, SAX J1747.0-2853 and SAX J1750.8-2900, have been seen with soft X-ray transient behaviour. In both low/hard and high/soft state, a thermal component is observed at energies below \~10 keV and the spectra are compatible with the same model consisting of a blackbody or disk blackbody plus a hard or Comptonized component. Light curves are characterized by either weak, short flares or longer, high luminosity eruptions with exponential decay.
dc.description4 pages, 6 figures, to appear in Proceedings of the 5th INTEGRAL Workshop 'The INTEGRAL Universe', Munich, 16-20 February 2004. Accepted for publication in ESA SP-552
dc.identifierhttps://arxiv.org/abs/astro-ph/0408046
dc.identifierhttp://arxiv.org/abs/astro-ph/0408046
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8022
dc.subjectAstrophysics
dc.titleSpectral states and transient behaviour of a sample of X-ray bursters observed by BeppoSax
dc.typetext

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