Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-05-19
ApJ, 539, L37
Astronomy and Astrophysics
Astrophysics
4 pages, 3 figures, replaced with accepted version. Uses emulateapj5.sty
Scientific paper
10.1086/312836
We present multiwavelength observations of the newly discovered X-ray transient XTE J1118+480 obtained in the rising phase of the 2000 April outburst. This source is located at unusually high Galactic latitude and in a very low absorption line of sight. This made the first EUVE spectroscopy of an X-ray transient outburst possible. Together with our HST, RXTE, and UKIRT data this gives unprecedented spectral coverage. We find the source in the low hard state. The flat IR-UV spectrum appears to be a combination of optically thick disk emission and flat spectrum emission, possibly synchrotron, while at higher energies, including EUV, a typical low hard state power-law is seen. EUVE observations reveal no periodic modulation, suggesting an inclination low enough that no obscuration by the disk rim occurs. We discuss the nature of the source and this outburst and conclude that it may be more akin to mini-outbursts seen in GRO J0422+32 than to a normal X-ray transient outburst.
Chaty Sylvain
Cui Wei-Wei
Haswell Carole A.
Hynes Robert I.
Mauche Christopher W.
No associations
LandOfFree
The X-ray transient XTE J1118+480: Multiwavelength observations of a low-state mini-outburst does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The X-ray transient XTE J1118+480: Multiwavelength observations of a low-state mini-outburst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The X-ray transient XTE J1118+480: Multiwavelength observations of a low-state mini-outburst will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-616920