Journal Club: Impact of magnetic field on neutrino-matter interactions in core collapse supernova

Fri., Sep. 24, 2021 3:30 p.m. - Fri., Sep. 24, 2021 4:30 p.m.

Location: Zoom

Abstract: Stars that are at least 8 times as massive as the Sun or more end their lives with highly energetic explosions known as the core-collapse supernovae. These explosions release vast amounts of energy, most of which is carried away by the elementary particles known as neutrinos. The neutrinos, which are produced in the cores of massive dying stars, interact with other particles via weak interactions as they diffuse out of the dense stellar core that has become a proto-neutron star by that time. These weak interactions of neutrinos are believed to be significantly affected by an external magnetic field of the progenitor star, and this paper focuses on how the parity violation from such weak interactions affect the symmetry of the ejected matter in the presence of a magnetic field. It investigates the effects of parity violation by performing full 3D general relativistic, MHD simulations of a 20 solar mass star from three different models of the pre-collapse stage of the star. The model with no rotation and no magnetic field (R0B00), the model with rotation and 10^12 Gauss magnetic field strength (R1B12), and the model with rotation and 10^13 Gauss magnetic field strength (R1B13). The results from the 3D simulations of these three different models will discussed.

Journal Article "Impact of magnetic field on neutrino-matter interactions in core-collapse supernova"

Speaker: Shayaan Sajid, University of Regina