出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：High-resolution observations of the black hole candidate GRS 1915+105 have shown the radio
emission to be dominated by a compact steady jet (< 20 mas), whilst in the low/hard state (e.g.
Dhawan et al. 2000). We have found a close relationship between the X-ray and radio emission
from the steady jet using the Ryle Telescope and RXTE-ASM. This was fitted by an empirical
relationship of SX−ray µ Sx
radio, with a power-law index of x 1.7. This suggests either a turn-over
of the Gallo et al. (2003) universal XRB relationship, from a radiatively efficient to inefficient
accretion disk or direct evidence of a variation in another fundamental parameter, e.g. accretion
radius
