The Invisible Universe: The Story of Radio Astronomy
Hidden from human view, accessible only to sensitive receivers attached to huge radio telescopes, giant versions of backyard satellite dishes, the invisible universe beyond our senses continues to fascinate and intrigue our imaginations. We cannot really comprehend what it means to say that a galaxy is exploding, yet that is the nature of some of the distant radio sources in the furthest reaches of space. Closer to home, in the Milky Way galaxy, radio astronomers listen patiently to the ticking of pulsars that tell of star death and states of matter of awesome densities. And between the stars, radio emission from a host of over 120 complex molecules radiate outward to reveal a tale about chemical processes that produce the very stuff of life. And all of this happens out there in the universe hidden from our eyes, even when aided by the Hubble Space Telescope.
This is the story of radio astronomy, of how radio waves are generated by stars, supernova, quasars, colliding galaxies, and by the very beginnings of the universe itself. In The Invisible Universe, you learn what astronomers are doing with those huge dishes in the New Mexico desert, in a remote valley in Puerto Rico, in the green Pocahontas Valley in West Virginia, as well as dozens of other remote sites around the world. With each of these observatories, the scientists collect and analyze their data, "listening" to the radio signals from space, in order to learn what is out there, and perhaps even if someone else may be listening as well.
From the reviews of the first edition -
"All in all, it's a grand and glorious story and Verschuur tells it with panache. The illustrations are superb, up to date, well done, and most of them are unfamiliar . . . Radio photos of Cygnus A and Cassiopeia A are wonderful . . . the book is strong in stressing the human aspects of astronomy . . . a good summary of what the radio universe contains and an interesting perspective on our understanding of it.""
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92 A Black Hole and its Accretion Disk
93 Precession of the Accretion Disk
94 Radio Stars
96 Other Superstars
103 The Largest Things in the Universe
105 The Radio Emitting Jets
24 Who Could Have Guessed?
25 Identity Crisis
26 An Epoch of Discovery
The Radio Sun and Planets
33 Solar Radio Emission
36 Radio Signals from the Planets
38 Jupiters Radiation Belts
39 The Planets as Radio Sources
The Galactic Radio Nebulae
42 Recent Guest Stars
43 Cassiopeia A
45 Supernovae and Life
46 Emission NebulaeStar Birth
47 HII Regions
Radio Waves from the Milky Way
53 Grote Reber Maps the Milky Way
55 The Appearance of the Radio Sky
56 Polarization of the Galactic Radio Waves
58 A Note on Distances
510 The Center of the Milky Way
511 Closeup Radio View of the Galactic Center
512 The Very Center and the Black Hole
63 Observations of Interstellar Neutral Hydrogen
65 Seeing into the Depths of Space
66 Anomalous Velocity Hydrogen
68 Neutral Hydrogen in Other Galaxies
72 What is a Molecule?
74 Masers in Space
77 The Stages Immediately Following Star Birth
83 Where are the Pulsars?
84 Formation of Neutron Stars
85 Binary PulsarsNatures Fabulous Space Labs
86 Millisecond Pulsars
87 What Pulse Timing Tells Us?
88 Pulsars in Globular Clusters
The Galactic Superstars
112 Brightness Variations
113 Parent Galaxies
The Modern View
The Grand Unification Active Galactic Nuclei
122 Seyfert Galaxies
124 Faster than LightSuperluminal Motions
125 Active Galactic Nuclei
126 Black Holes
128 Galactic Cannibalism
Beyond the QuasarsRadio Cosmology
132 Radio Astronomy and Cosmology
133 The Microwave Background
134 Beyond the Big BangMultiple Universes
135 How Smooth is Space?
136 Missing Mass Dark Matter?
137 Gravitational Lenses
On The Radio Astronomical Quest For Extraterrestrial Intelligence
142 The Harsh Realities of the SETI EquationA Modern Heresy
Radio Telescopes The Future
151 Bigger and Better
152 LowNoise Receivers
1541 ALMAThe Atacama Large MillimeterSubmillimeter Array
1542 LOFARLow Frequency Array
1543 SKAThe Square Kilometer Array
1544 PAPERPortable Array to Probe the Epoch of Ionization
Whats It All About?
162 Are We Still Open to the Unexpected?
164 So Whats It All About?
A21 Wavelength and Frequency
A24 Spectral Lines
A3 The Brightness of Radio Sources
A7 Astronomical Coordinate Systems
A8 Astronomical DistancesLooking Back in Time