With the advent of more sensitive all-sky instruments, the transient universe is being probed
in greater depth than ever before. Taking advantage of available resources, we have …

INTEGRAL is an ESA mission in fundamental astrophysics that was launched in October
2002. It has been in orbit for over 18 years, during which it has been observing the high …

The evolution of massive stars is influenced by the mass lost to stellar winds over their
lifetimes. These winds limit the masses of the stellar remnants (such as black holes) that the …

Abstract In this White Paper we present the potential of the enhanced X-ray Timing and
Polarimetry (eXTP) mission for studies related to Observatory Science targets. These include …

Black hole X-ray binaries display significant stochastic variability on short time-scales (0.01–
100 s), with a complex pattern of lags in correlated variability seen in different energy bands …

Context. We present a systematic X-ray spectral-timing study of the recently discovered,
exceptionally bright black hole X-ray binary system MAXI J1820+ 070. Our analysis focuses …

Cygnus X-1 is a well-studied persistent black hole X-ray binary. Recently, the three
parameters needed to estimate the black hole spin of this system, namely the black hole …

The nature and geometry of the accretion flow in the low/hard state of black hole binaries is
currently controversial. While most properties are generally explained in the truncated …

Context. In supergiant X-ray binaries (SgXB), a compact object captures a fraction of the
wind of an O/B supergiant on a close orbit. Proxies exist to evaluate the efficiency of mass …

Timing of high-count-rate sources with the NuSTAR Small Explorer Mission requires
specialized analysis techniques. NuSTAR was primarily designed for spectroscopic …