The Invisible Universe

Cover -- Contents -- Acknowledgments -- Introduction -- The Exploration of the Radio Astronomical Unknown -- Seeking New Knowledge -- Radio Astronomy and Imagination -- CH 1 What is Radio Astronomy? -- 1.1 A Little History -- 1.2 The Birth of Radio Astronomy -- 1.3 So What is Radio Astronomy? -- 1.3.1 How Radio Waves from Space Are Generated -- 1.3.2 Radio Telescopes -- 1.3.3 What is a Radio Source? -- 1.4 Radio Interferometers -- 1.4.1 Very Large Array -- 1.4.2 Very Long Baseline Array -- CH 2 A Science is Born -- 2.1 Caught between Two Disciplines -- 2.2 Postwar Years-Radar Everywhere -- 2.3 The Southern Skies -- 2.4 Who Could Have Guessed? -- 2.5 Identity Crisis -- 2.6 An Epoch of Discovery -- CH 3 The Radio Sun and Planets -- 3.1 War Secrets -- 3.2 The Plasma Sun -- 3.3 Solar Radio Emission -- 3.4 The Quiet Sun -- 3.5 Solar Radio Bursts -- 3.6 Radio Signals from the Planets -- 3.7 Jupiter's Radio Bursts -- 3.8 Jupiter's Radiation Belts -- 3.9 The Planets as Radio Sources -- 3.10 Planetary Radar -- CH 4 The Galactic Radio Nebulae -- 4.1 The Supernova-Stardeath -- 4.2 Recent "Guest Stars" -- 4.3 Cassiopeia A -- 4.4 Supernovae of Type I and Type II -- 4.5 Supernovae and Life -- 4.6 Emission Nebula-Star Birth -- 4.7 HII Regions -- 4.8 Planetary Nebulae -- CH 5 Radio Waves from the Milky Way -- 5.1 "A Steady Hiss Type Static of Unknown Origin" -- 5.2 Receiver Noise-"Listening" to Radio Sources -- 5.3 Grote Reber Maps the Milky Way -- 5.4 A Radio Map of the Whole Sky -- 5.5 The Appearance of the Radio Sky -- 5.6 Polarization of Galactic Radio Waves -- 5.7 "Normal" Galaxies -- 5.8 A Note on Distances -- 5.9 The Shape of the Milky Way Galaxy -- 5.10 The Center of the Milky Way -- 5.11 Close-Up Radio View of the Galactic Center -- 5.12 The Very Center and the Black Hole -- CH 6 Interstellar Hydrogen -- 6.1 Clouds of Destiny -- 6.2 Generation of the 21-cm Spectral Line -- 6.3 Observations of Interstellar Neutral Hydrogen -- 6.4 An Image of Interstellar Hydrogen -- 6.5 Seeing into the Depths of Space -- 6.6 Anomalous Velocity Hydrogen -- 6.7 Interstellar Magnetic Fields -- 6.8 Neutral Hydrogen in Other Galaxies -- CH 7 Interstellar Molecules -- 7.1 Chemical Factories in Space -- 7.2 What is a Molecule? -- 7.3 Molecular Spectral Lines -- 7.4 Masers in Space -- 7.5 Mega-Masers -- 7.6 Giant Molecular Clouds -- 7.7 The Stages Immediately Following Star Birth -- CH 8 Pulsars -- 8.1 Scintillation of Radio Sources -- 8.2 The Discovery of Pulsars -- 8.3 Where are the Pulsars? -- 8.4 Formation of Neutron Stars -- 8.5 Binary Pulsars-Nature's Fabulous Space Labs -- 8.6 Millisecond Pulsars -- 8.7 What Pulse Timing Tells Us -- 8.8 Pulsars in Globular Clusters -- CH 9 The Galactic Superstars -- 9.1 The Curious Object SS433 -- 9.2 A Black Hole and its Accretion Disk -- 9.3 Precession of the Accretion Disk -- 9.4 Radio Stars -- 9.5 Novae -- 9.6.