2019-02-21 14:00  P7F

Mass ejection, compact objects, and electromagnetic transients

Rodrigo Fernandez

Mass ejection is involved in the generation of many types of electromagnetic transient, often in the presence of at least one compact stellar object. A variety of processes can cause mass to become unbound from a gravitational field, including neutrino emission or absorption, magnetic stresses, angular momentum transport, or nuclear processes. In this talk I will discuss two astrophysical situations in which non-trivial mass ejection from the vicinity of a compact object should occur: the accretion disk formed in a neutron star merger, which contributes to the kilonova ejecta, and a failed supernova, in which non-negligible amounts of mass are expelled and interesting transients can result.