We review the various ways in which binary pulsars, millisecond pulsars and pulsars in
globular clusters may have formed. To this end the formation processes of neutron stars in …

If a point mass moves through a uniform gas cloud, at what rate does it accrete material?
This is the question studied by Bondi, Hoyle and Lyttleton. This paper draws together the …

We present the results of axisymmetric time-dependent hydrodynamic calculations of line-
driven winds from accretion disks in active galactic nuclei (AGNs). We assume the disk is …

We measure the net energy efficiency of supernova (SN) and stellar wind feedback in the
starburst galaxy M82 and the degree of mass loading of the hot gas piston driving its …

Starburst-driven galactic winds are responsible for the transport of mass, in particular metal-
enriched gas, and energy out of galaxies and into the intergalactic medium. These outflows …

We use 3D hydrodynamical models to investigate the effects of massive star feedback from
winds and supernovae on inhomogeneous molecular material left over from the formation of …

We update the ephemeris of the eclipsing high-mass X-ray binary (HMXB) systems LMC X-
4, Cen X-3, 4U 1700-377, 4U 1538-522, SMC X-1, IGR J18027-2016, Vela X-1, IGR J17252 …

Massive stars, at least∼ 10 \sim10 times more massive than the Sun, have two key
properties that make them the main drivers of evolution of star clusters, galaxies, and the …

We present X-ray spectral fits to a recently obtained Chandra grating spectrum of η Carinae,
one of the most massive and powerful stars in the Galaxy and which is strongly suspected to …

High mass X-ray binaries are among the brightest X-ray sources in the Milky Way, as well as
in nearby Galaxies. Thanks to their highly variable emissions and complex phenomenology …