CRA seminar by Dr. Inayoshi (Columbia University) Title: Hyper-Eddington accretion flows onto massive black holes Abstract: How fast can black holes (BHs) grow?  The existence of bright quasars at high-redshift provides a challenging puzzle about the origin of supermassive BHs. To form such massive objects within a billion year, rapid growth of seed BHs is required. We … Continue reading "CRA seminar (Dr. Kohei Inayoshi)"

Jonathan Blackman (California Institute of Technology) Title: Surrogate models of gravitational waveforms from numerical relativity simulations of black hole mergers Abstract: GW150914 was the first detection of gravitational waves from a binary black hole merger, bringing us into the era of gravitational wave astronomy. From such gravitational wave detections, we can put constraints on deviations … Continue reading "CRA seminar (Jonathan Blackman)"

CRA seminar by Prof. Sam Finn (Penn State University)

Title: The formation of the first star clusters: impact on reionization, JWST observations and near-field cosmology Abstract: In this talk I will focus on understanding what determines the morphology of the stellar component in the first low mass galaxies, using parsec- scale cosmological simulations performed with an adaptive mesh hydrodynamics code. Although the dense gas … Continue reading "CRA seminar (Prof. Massimo Ricotti)"

Title: Multi-Messenger Aspects of Cosmic Neutrinos Abstract: The recent observation of TeV-PeV neutrinos by IceCube has opened a new window to the high-energy Universe. These high-energy astrophysical neutrinos are expected to originate from cosmic-ray interactions with gas and radiation. The origin of the IceCube signal is presently unknown and various Galactic and extragalactic source candidates … Continue reading "CRA seminar (Dr. Markus Ahlers)"