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 |
|---|---|
| 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 |
|---|---|
| Country | Spain |
| City | Alicante |
| Period | 9/4/00 → 9/8/00 |
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Keywords
- Infrared: stars
- Stars: individual: XTE J1859+226
- X-rays: stars
- XTE J1118+480
ASJC Scopus subject areas
- Aerospace Engineering
Cite this
Multiwavelength observations revealing the outbursts of the two soft X-ray transients XTE J1859+226 and XTE J1118+480. / Chaty, S.; Haswell, C. A.; Hynes, R. I.; Shrader, C. R.; Cui, W.; Mauche, C. W.; Norton, A. J.; Solheim, J. E.; Ostensen, R.; Geballe, T. R.; Ioannou, Z.; King, A. R.
European Space Agency, (Special Publication) ESA SP. 459. ed. 2001. p. 491-494.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Multiwavelength observations revealing the outbursts of the two soft X-ray transients XTE J1859+226 and XTE J1118+480
AU - Chaty, S.
AU - Haswell, C. A.
AU - Hynes, R. I.
AU - Shrader, C. R.
AU - Cui, W.
AU - Mauche, C. W.
AU - Norton, A. J.
AU - Solheim, J. E.
AU - Ostensen, R.
AU - Geballe, T. R.
AU - Ioannou, Z.
AU - King, A. R.
PY - 2001/9
Y1 - 2001/9
N2 - 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.
AB - 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.
KW - Infrared: stars
KW - Stars: individual: XTE J1859+226
KW - X-rays: stars
KW - XTE J1118+480
UR - http://www.scopus.com/inward/record.url?scp=0035463765&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035463765&partnerID=8YFLogxK
M3 - Conference contribution
SP - 491
EP - 494
BT - European Space Agency, (Special Publication) ESA SP
ER -