We present observations of the 1997 outburst of the X-ray transient GS 1354−64 (BW Cir) at X-ray, optical and, for the first time, radio wavelengths; this includes upper limits to the linear and circular polarisation of the radio data. The X-ray outburst was unusual in that the source remained in the low/hard X-ray state throughout; the X-ray peak was also preceded by at least one optical outbu...

Aims. We investigate the X-ray spectral and timing properties of the high mass X-ray binary EXO 2030+375 observed during its June–September 2006 giant (type II) outburst. Methods. The data analyzed in this work are from partly simultaneous observations with INTEGRAL and Swift. The pulse period P and its temporal derivative Ṗ are measured. X-ray pulse profiles in different energy ranges and time...

Abstract The thermal effect caused by deep magma intrusion can not only accelerate the metamorphism of coal body, but also bring additional field that changes mechanical environment seams, thereby affecting permeability seams. Different from shallow resources, resources are in a characterized limited stress and strain. Thus, has more significant influence on distribution characteristics In this...

We present multiwavelength (optical, IR, radio) observations of CI Cam, the optical counterpart to the transient X-ray source XTE J0421+560. Pre-outburst quiescent observations reveal the presence of a dusty envelope around the system. Pronounced short term variability is observed at all wavebands from U–K, but no indication of prior flaring of a similar magnitude to the 1998 April outburst is ...

We present an intensive radio and X-ray monitoring campaign on the 2009 outburst of the Galactic black hole candidate X-ray binary H1743−322. With the high angular resolution of the Very Long Baseline Array, we resolve the jet ejection event and measure the proper motions of the jet ejecta relative to the position of the compact core jets detected at the beginning of the outburst. This allows u...

We follow the time dependent thermal evolution of a white dwarf (WD) undergoing sudden accretion in a dwarf nova outburst, using both simulations and analytic estimates. The post-outburst lightcurve clearly separates into early times when the WD flux is high, and late times when the flux is near the quiescent level. The break between these two regimes, occurring at a time of order the outburst ...

In recent years, with the increasing of mining depth and intensity, coal gas outburst has become one most destructive harmful dynamic disasters in mines. Natural earthquakes are natural earth’s crust. Both outbursts caused by geo-dynamic processes. order to research correlation between earthquake, this manuscript, we took Pingdingshan eastern area as object. The principles disaster prevention, ...