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

S. Chaty; C. A. Haswell; R. I. Hynes; C. R. Shrader; W. Cui; C. W. Mauche; A. J. Norton; J. E. Solheim; R. Ostensen; T. R. Geballe; Z. Ioannou; A. R. King

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

S. Chaty^*, C. A. Haswell, R. I. Hynes, C. R. Shrader, W. Cui, C. W. Mauche, A. J. Norton, J. E. Solheim, R. Ostensen, T. R. Geballe, Z. Ioannou, A. R. King

^*Corresponding author for this work

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

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

Keywords

Infrared: stars
Stars: individual: XTE J1859+226
X-rays: stars
XTE J1118+480

ASJC Scopus subject areas

Aerospace Engineering

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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. (2001). Multiwavelength observations revealing the outbursts of the two soft X-ray transients XTE J1859+226 and XTE J1118+480. In European Space Agency, (Special Publication) ESA SP (459 ed., pp. 491-494)

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

Chaty, S, Haswell, CA, Hynes, RI, Shrader, CR, Cui, W, Mauche, CW, Norton, AJ, Solheim, JE, Ostensen, R, Geballe, TR, Ioannou, Z & King, AR 2001, Multiwavelength observations revealing the outbursts of the two soft X-ray transients XTE J1859+226 and XTE J1118+480. in European Space Agency, (Special Publication) ESA SP. 459 edn, pp. 491-494, 4th Integral Workshop -Exploring the Gamma-Ray Universe-2000, Alicante, Spain, 9/4/00.

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. / Multiwavelength observations revealing the outbursts of the two soft X-ray transients XTE J1859+226 and XTE J1118+480. European Space Agency, (Special Publication) ESA SP. 459. ed. 2001. pp. 491-494

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title = "Multiwavelength observations revealing the outbursts of the two soft X-ray transients XTE J1859+226 and XTE J1118+480",

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.",

keywords = "Infrared: stars, Stars: individual: XTE J1859+226, X-rays: stars, XTE J1118+480",

author = "S. Chaty and Haswell, {C. A.} and Hynes, {R. I.} and Shrader, {C. R.} and W. Cui and Mauche, {C. W.} and Norton, {A. J.} and Solheim, {J. E.} and R. Ostensen and Geballe, {T. R.} and Z. Ioannou and King, {A. R.}",

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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

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KW - X-rays: stars

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