出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：For many years the 5-km Telescope, later renamed the Ryle Telescope, has been used in a monitoring
campaign for variable radio sources. The 5-km telescope was built as a high-resolution
mapping instrument for Galactic and extragalactic sources. In recent years it became the Ryle
Telescope, used for Sunyaev-Zel'dovich observations and for other surveys related to CMB observations.
The monitoring of variable sources has always been a secondary program. The telescope
is a single-frequency system, and for the past 14 years or so it has been used at 15 GHz. A
substantial upgrade and reconguration is now in progress; the telescope now forms part of the
AMI array . the Arcminute Microkelvin Imager.
Some of the monitoring observations have been of transient objects such as radio supernovae,
GRBs and X-ray binaries like J1118+480 or CI Cam; there are also long sequences of data on
a small number of more persistent XRBs, notably Cygnus X-1, Cygnus X-3 and GRS 1915+105.
Examples of some of the more unusual events and the long-term sequences are presented.
