Multiwavelength observations revealing the outbursts of the soft X-ray transients XTE J1859+226 and XTE J1118+480

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dc.creatorChaty, S.
dc.creatorHaswell, C. A.
dc.creatorHynes, R. I.
dc.creatorShrader, C. R.
dc.creatorCui, W.
dc.date2001-08-14
dc.date2001-08-15
dc.date.accessioned2026-07-07T01:59:39Z
dc.date.available2026-07-07T01:59:39Z
dc.descriptionWe report multiwavelength observations of the two soft X-ray transients (SXTs) XTE J1859+226 and XTE J1118+480, which we observed with HST, RXTE and UKIRT. The two sources exhibited very different behaviour. XTE J1859+226 showed a thermal-viscous disc instability outburst modified by irradiation. XTE J1118+480, which we also observed with EUVE since it is located at a very high galactic latitude and suffers from very low extinction, is much more unusual. It exhibits i) a low X-ray to optical flux ratio and ii) a strong non-thermal contribution throughout the spectrum, which is likely to be due to synchrotron emission. We concentrate here on their evolution in the course of their outbursts.
dc.description4 pages, 2 figures, 2001, SF2A, Lyon, May 28-June 1st, Societe Francaise d'Astronomie et d'Astrophysique (eds), EDPS Conference Series in Astronomy & Astrophysics, in press. 1 reference added
dc.identifierhttps://arxiv.org/abs/astro-ph/0108242
dc.identifierhttp://arxiv.org/abs/astro-ph/0108242
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3202
dc.subjectAstrophysics
dc.titleMultiwavelength observations revealing the outbursts of the soft X-ray transients XTE J1859+226 and XTE J1118+480
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