The appearance of active galactic nuclei (AGN) depends so strongly on orientation that our
current classification schemes are dominated by random pointing directions instead of more …

Massive black holes (BHs) are at once exotic and yet ubiquitous, residing at the centers of
massive galaxies in the local Universe. Recent years have seen remarkable advances in …

Accreting black holes emit highly collimated radio jets expanding at speeds approaching
light speed. Some of these jets appear to be expanding at superluminal speeds due to …

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 …

This review covers the main aspects of black hole accretion disk theory. We begin with the
view that one of the main goals of the theory is to better understand the nature of black holes …

We present a unified semiquantitative model for the disc–jet coupling in black hole X-ray
binary systems. In the process we have compiled observational aspects from the existing …

We examine the disc—jet connection in stellar mass and supermassive black holes by
investigating the properties of their compact emission in the X-ray and radio bands. We …

The spins of ten stellar black holes have been measured using the continuum-fitting method.
These black holes are located in two distinct classes of X-ray binary systems, one that is …

▪ Abstract Black holes of stellar mass and neutron stars in binary systems are first detected
as hard X-ray sources using high-energy space telescopes. Relativistic jets in some of these …

Kenneth Lang's classic work Astrophysical Formulae.(Vol. I and II) is now available as soft
cover edition in a set. This volume is a reference source of fundamental formulae in physics …