An outburst of the accreting X-ray millisecond pulsar SAX J1808.4-3658 in 2002 October-November was followed by the Rossi X-ray Timing Explorer for more than a month. A detailed analysis of this unprecedented data set is ...

© The Author(s), 2020. Many intermediate polars are hard X-ray sources. The theory of their hard X-ray radiation is well developed and allows us to determine white dwarf masse in this kind of cataclysmic variables. Here ...

© ESO, 2017. Context. Supergiant fast X-ray (SFXT) transients are a peculiar class of supergiant X-ray binaries characterized by a remarkable variability in the X-ray domain, widely ascribed to accretion from a clumpy ...