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

The Open University
Dept. of Phys. and Astronomy

Résultats de recherche: Contribution à un journal › Article de conférence › Revue par des pairs

1 Citation (Scopus)

Résumé

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.

langue originale	Anglais
Pages (de - à)	491-494
Nombre de pages	4
journal	European Space Agency, (Special Publication) ESA SP
Numéro de publication	459
état	Publié - 1 sept. 2001
Modification externe	Oui
Evénement	4th Integral Workshop -Exploring the Gamma-Ray Universe-2000 - Alicante, Espagne Durée: 4 sept. 2000 → 8 sept. 2000

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@article{309c0f8e344345c1befbd56378abef96,

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.\}",

year = "2001",

month = sep,

day = "1",

language = "English",

pages = "491--494",

journal = "European Space Agency, (Special Publication) ESA SP",

issn = "0379-6566",

publisher = "European Space Agency",

number = "459",

note = "4th Integral Workshop -Exploring the Gamma-Ray Universe-2000 ; Conference date: 04-09-2000 Through 08-09-2000",

}

TY - JOUR

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 - 2001/9/1

Y1 - 2001/9/1

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

M3 - Conference article

AN - SCOPUS:0035463765

SN - 0379-6566

SP - 491

EP - 494

JO - European Space Agency, (Special Publication) ESA SP

JF - European Space Agency, (Special Publication) ESA SP

IS - 459

T2 - 4th Integral Workshop -Exploring the Gamma-Ray Universe-2000

Y2 - 4 September 2000 through 8 September 2000

ER -

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

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