We report here on multiwavelength observations of the two new soft X-ray transients (SXTs) XTE J1859+226 and XTE J1118+480, which we observed with HST/RXTE/UKIRT. For XTE J1118+480 we also used EUVE since it is located at a very high galactic latitude and suffers from very low extinction. The two sources exhibited very different behaviour. XTE J1859+226 seems quite normal and therefore a good object for testing the accretion mechanisms in place during the outbursts, XTE J1118+480 is much more unusual because it exhibits i) a low X-ray to optical ratio and ii) a strong non-thermal contribution in the radio to optical domain, which is likely to be due to synchrotron emission. We concentrate here on the near-infrared (NIR) and optical observations of these two systems.
|الصفحات (من إلى)||491-494|
|دورية||European Space Agency, (Special Publication) ESA SP|
|حالة النشر||Published - سبتمبر 2001|
|الحدث||4th Integral Workshop -Exploring the Gamma-Ray Universe-2000 - Alicante, Spain|
المدة: سبتمبر ٤ ٢٠٠٠ → سبتمبر ٨ ٢٠٠٠
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