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A Characteristic Division Between the Fueling of Quasars and Seyferts: Five Simple Tests
Philip F. Hopkins, Lars Hernquist
Given the existence of the M_BH-sigma relation, models of self-regulated black hole (BH) growth require both a fuel supply and growth of the host bulge to deepen the potential, or…
Cross-Correlation between Damped Ly-alpha Systems and Ly-break Galaxies in Cosmological SPH Simulations
Tae Song Lee, Kentaro Nagamine, Lars Hernquist +1
We calculate the cross-correlation function (CCF) between damped Ly-a systems (DLAs) and Lyman break galaxies (LBGs) using cosmological hydrodynamic simulations at z=3. We compute…
The Binarity of the Magellanic Clouds and the Formation of the Magellanic Stream
Gurtina Besla, Nitya Kallivayalil, Lars Hernquist +4
The HST proper motion (PM) measurements of the Clouds have severe implications for their interaction history with the Milky Way (MW) and with each other. The Clouds are likely on t…
Quasars Are Not Light-Bulbs: Testing Models of Quasar Lifetimes with the Observed Eddington Ratio Distribution
Philip F. Hopkins, Lars Hernquist
We use the observed distribution of Eddington ratios as a function of supermassive black hole (BH) mass to constrain models of AGN lifetimes and lightcurves. Given the observed AGN…
A Semi-Analytic Model for the Co-evolution of Galaxies, Black Holes, and Active Galactic Nuclei
Rachel S. Somerville, Philip F. Hopkins, Thomas J. Cox +2
We present a new semi-analytic model that self-consistently traces the growth of supermassive black holes (BH) and their host galaxies within the context of the LCDM cosmological f…
Protostar Formation in the Early Universe
Naoki Yoshida, Kazuyuki Omukai, Lars Hernquist
The nature of the first generation of stars in the Universe remains largely unknown. Observations imply the existence of massive primordial stars early in the history of the univer…