Initial low/hard state, multiple jet ejections and X-ray/radio correlations during the outburst of XTE J1859+226
Abstract
We have studied the 1999 soft X-ray transient outburst of XTE J1859+226 at radio and X-ray wavelengths. The event was characterized by strong variability in the disc, corona and jet - in particular, a number of radio flares (ejections) took place and seemed well-correlated with hard X-ray events. Apparently unusual for the canonical `soft' X-ray transient, there was an initial period of low/hard state behaviour during the rise from quiescence but prior to the peak of the main outburst - we show that not only could this initial low/hard state be a ubiquitous feature of soft X-ray transient outbursts, but also it could be extremely important in our study of outburst mechanisms.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- April 2002
- DOI:
- 10.1046/j.1365-8711.2002.05230.x
- arXiv:
- arXiv:astro-ph/0112137
- Bibcode:
- 2002MNRAS.331..765B
- Keywords:
-
- accretion;
- accretion discs;
- stars: individual: XTE J1859+226;
- X-rays: stars;
- Astrophysics
- E-Print:
- 12 pages, Accepted for publication in MNRAS