出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Conventional steady-state jet models are not suitable for studying accretion outflows near state
transitions in X-ray binary systems (XRB). Here, we present our ongoing work towards developing
a time-dependent leptonic jet model to describe the soft-to-hard state transition in jets from
X-ray binary systems. Taking into account the energetics of the co-evolving particle and photon
distributions, we quantify the various cooling processes that seem to be relevant for microquasar
(mQSO) jets. We study two extreme cases of shock acceleration, viz. (1) only one episode of
shock acceleration at jet base, and (2) constant energy injection along the length of the jet. From
these two cases we show that the observed flat radio–IR spectra seen in steady compact jets from
XRBs in hard state cannot result from either a single acceleration episode or a constant rate of
energy injection.
