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Index - Pg. 189

INDEX 21-cm line, 137, 140, 141, 143, 147­151, 153­155, 157, 158 absorption of photons, 63, 129, 133, 138, 139, 141, 143, 144, 146, 148, 155 accelerating universe, 161, 169 accretion of matter, 54, 66, 69, 79, 81, 83­86, 90 Andromeda galaxy (M31), 116, 164, 167­169 angular diameter distance, 121 annihilation of electrons and positrons, 26, 27 Atacama Large Millimeter/ Submillimeter Array nucleosynthesis of, 26, 66 Birkhoff's theorem, 12, 15 black hole, 5, 30, 35, 45, 63­66, 77­90, 92, 93, 96, 103, 118, 147, 156, 162, 183 supermassive, 80­82, 90 blackbody radiation, 11, 74, 134, 145 bubbles of ionized gas, 5, 69, 98, 104, 106, 109­112, 114, 115, 119, 134, 141­143, 148, 151, 153 chemical reactions, 61, 65 collapsar, 92, 93 cooling, 45, 59, 60, 63, 65­67, 72, 87, 107