The last century has seen enormous progress in our understanding of the Universe. We know that the Universe has emerged from the big bang, has been expanding at large, and contains luminous baryonic structures that shape our cosmic landscape. We know that stars are continuing to form in galaxies, and that galaxies form and assemble along filaments of the cosmic web. Powerful quasars and gamma-ray bursts were already in place when the Universe was less than one billion years old, indicating places where the first black holes formed. By using electromagnetic radiation as a tool for observing the Universe, we have learned that fluctuations at early epochs seeded the formation of all cosmic structures we see today. However, we do not know the nature of this dark component, which is revealed through its gravitational action on the luminous matter, nor how, when, and where the first black holes formed in dark matter halos.
|Original language||English (US)|
|State||Published - Feb 2 2017|
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