Abstract
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.
Original language | English |
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Title of host publication | European Space Agency, (Special Publication) ESA SP |
Pages | 491-494 |
Number of pages | 4 |
Edition | 459 |
Publication status | Published - Sep 2001 |
Event | 4th Integral Workshop -Exploring the Gamma-Ray Universe-2000 - Alicante, Spain Duration: Sep 4 2000 → Sep 8 2000 |
Other
Other | 4th Integral Workshop -Exploring the Gamma-Ray Universe-2000 |
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Country | Spain |
City | Alicante |
Period | 9/4/00 → 9/8/00 |
Keywords
- Infrared: stars
- Stars: individual: XTE J1859+226
- X-rays: stars
- XTE J1118+480
ASJC Scopus subject areas
- Aerospace Engineering