Title: Constraining the origin of IceCube’s neutrinos with HAWC. Abstract: IceCube has observed an astrophysical isotropic flux of neutrinos in the 10 TeV - 8 PeV range. Though an extragalactic origin is usually assumed, no unequivocal association with astrophysical objects has been made. It is often assumed that the neutrino sources are also cosmic ray sources … Continue reading "CRA seminar (Prof. Ignacio Taboada)"
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)"
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Title: Down-going neutrinos and a next-generation surface array for IceCube Abstract: IceCube has recently discovered an astrophysical neutrino flux up to energies of a few PeV. The sources of the flux are not yet identified, but real-time alerts are now in place to look for coincidences with other messengers. Adding a surface array around the … Continue reading "CRA seminar (Dr. Delia Tosi)"
Title : Chemo-thermal evolution of metal-poor star-forming gas clouds Abstract: The gravitational collapse of metal-poor gas clouds and star formation are investigated. Recently, the long-lived and metal-poor stars have been observed in the Galactic halo. Yet, the origin of these stars is still unknown. We perform three-dimensional hydrodynamics simulations to see the critical condition for … Continue reading "CRA seminar (Dr. Gen Chiaki)"
