Emitting no radiation or any other kind of information, black holes mark
the edge of the universe--both physically and in our scientific
understanding. Yet astronomers have found clear evidence for the
existence of black holes, employing the same tools and techniques used
to explore other celestial objects. In this sophisticated introduction,
leading astronomer Charles Bailyn goes behind the theory and physics of
black holes to describe how astronomers are observing these enigmatic
objects and developing a remarkably detailed picture of what they look
like and how they interact with their surroundings.Accessible to
undergraduates and others with some knowledge of introductory
college-level physics, this book presents the techniques used to
identify and measure the mass and spin of celestial black holes. These
key measurements demonstrate the existence of two kinds of black holes,
those with masses a few times that of a typical star, and those with
masses comparable to whole
galaxies--supermassive black holes. The book provides a detailed account
of the nature, formation, and growth of both kinds of black holes. The
book also describes the possibility of observing theoretically predicted
phenomena such as gravitational waves, wormholes, and Hawking
radiation.A cutting-edge introduction to a subject that was once on the
border between physics and science fiction, this book shows how black
holes are becoming routine objects of empirical scientific study.