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19 papers · 1 filter
Large-Scale Structure Shocks at Low and High Redshifts
Steven Furlanetto, Abraham Loeb
Cosmological simulations show that, at the present time, a substantial fraction of the gas in the intergalactic medium (IGM) has been shock-heated to T>10^5 K. Here we develop an a…
Detection of Gravitational Waves from the Coalescence of Population-III Remnants with Advanced LIGO
Stuart Wyithe, Abraham Loeb
The comoving mass density of massive black hole (MBH) remnants from pre-galactic star formation could have been similar in magnitude to the mass-density of supermassive black holes…
Early Formation and Late Merging of the Giant Galaxies
Liang Gao, Abraham Loeb, P. J. E. Peebles +2
The most luminous galaxies in the present Universe are found at the centers of the most massive dark matter haloes, rich galaxy clusters. In the LCDM cosmology, such massive halo c…
Measuring the Small-Scale Power Spectrum of Cosmic Density Fluctuations Through 21 cm Tomography Prior to the Epoch of Structure Formation
Abraham Loeb, Matias Zaldarriaga
The thermal evolution of the cosmic gas decoupled from that of the cosmic microwave background (CMB) at a redshift z~200. Afterwards and before the first stars had formed, the cosm…
Direct Feeding of the Black Hole at the Galactic Center with Radial Gas Streams from Close-In Stellar Winds
Abraham Loeb
We show that the recently-discovered orbits of massive stars with closest approach of ~10^3 Schwarzschild radii from SgrA*, allow winds from these stars to provide the required mas…
The Formation of the First Low-Mass Stars From Gas With Low Carbon and Oxygen Abundances
Volker Bromm, Abraham Loeb
The first stars in the Universe are predicted to have been much more massive than the Sun. Gravitational condensation accompanied by cooling of the primordial gas due to molecular…