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Shaken and stirred: conduction and turbulence in clusters of galaxies
M. Ruszkowski, S. Peng Oh
(abridged) Uninhibited radiative cooling in clusters of galaxies would lead to excessive mass accretion rates contrary to observations. One of the key proposals to offset radiative…
AGN Feedback and Bimodality in Cluster Core Entropy
Fulai Guo, S. Peng Oh, M. Ruszkowski
We investigate a series of steady-state models of galaxy clusters, in which the hot intracluster gas is efficiently heated by active galactic nucleus (AGN) feedback and thermal con…
Could AGN Outbursts Transform Cool Core Clusters?
Fulai Guo, S. Peng Oh
The origin of the bimodality in cluster core entropy is still unknown. At the same time, recent work has shown that thermal conduction in clusters is likely a time-variable phenome…
Cosmology from the Highly-Redshifted 21 cm Line
Steven Furlanetto, Adam Lidz, Abraham Loeb +26
One of the next decade's most exciting prospects is to explore the cosmic "dark ages," during which the first stars in the Universe formed, with the 21 cm line of neutral hydrogen.…
Astrophysics from the Highly-Redshifted 21 cm Line
Steven Furlanetto, Adam Lidz, Abraham Loeb +26
The cosmic dark ages and the epoch of reionization, during which the first generations of stars and galaxies formed, are among the most compelling frontiers of extragalactic astrop…
A New Era in Extragalactic Background Light Measurements: The Cosmic History of Accretion, Nucleosynthesis and Reionization
Asantha Cooray, Alexandre Amblard, Charles Beichman +52
(Brief Summary) What is the total radiative content of the Universe since the epoch of recombination? The extragalactic background light (EBL) spectrum captures the redshifted ener…