Engineering-Physics Space Plasma Seminar - Marcus DuPont, Princeton University
Title: "Thinking about non-conventional mechs behind astrophysical transients鈥
Abstract: The stellar calamities responsible for astrophysical transients have long been modeled as either point-like or jetted explosions at the center of spherically symmetric stars. However, from theory and observation, we know that stars need not be precisely spherically symmetric, and can have the shape of a Roche lobe or can have a slightly flattened geometry similar to that of an oblate spheroid. Second, if the stellar core collapses to form a rapidly rotating neutron star (NS) with an extreme magnetic field, it might be possible the NS expels an equatorial outflow that breaks out with relativistic speeds in the equatorial plane of the star. We present an unexpected result that explosions with these progenitor / engine geometries are capable of accelerating relativistic ejecta that may lead to the production of astronomical transients including relativistic supernovae (SNe), gamma-ray bursts (GRBs), and fast blue optical transients (FBOTs) all of which are prime targets of ongoing and upcoming astrophysical time-domain surveys.
Hosted by 天美影视 Jens Mahlmann
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https://dartmouth.zoom.us/j/92751420885?pwd=QnIwN0RiSGkzMUtjQVZxRlZLMkcwQT09
Meeting ID: 927 5142 0885
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