Open AccessInitial low/hard state, multiple jet ejections and X‐ray/radio correlations during the outburst of XTE J1859+226
Author(s) -
Brocksopp C.,
Fender R. P.,
McCollough M.,
Pooley G. G.,
Rupen M. P.,
Hjellming R. M.,
De La Force C. J.,
Spencer R. E.,
Muxlow T. W. B.,
Garrington S. T.,
Trushkin S.
Publication year - 2002
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2002.05230.x
Subject(s) - physics , astrophysics , jet (fluid) , transient (computer programming) , corona (planetary geology) , wavelength , flare , astronomy , optics , mechanics , astrobiology , computer science , venus , operating system
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.