29 May 2018 to 3 June 2018
Hyatt Regency Indian Wells Conference Center
US/Pacific timezone

Neutrinos from Beta Processes in Presupernovae

29 May 2018, 15:00
20m
North Foyer | Joshua Tree Room (Hyatt Regency Indian Wells Conference Center)

North Foyer | Joshua Tree Room

Hyatt Regency Indian Wells Conference Center

44600 Indian Wells Lane, Indian Wells, CA 92210, USA

Speaker

Dr Kelly Patton (University of Washington/Institute for Nuclear Theory)

Description

We present calculations of the neutrino emissivities and energy spectra from massive stars in the lead up to their explosion as supernovae (presupernovae). Results from the stellar evolution code MESA are used to calculate the neutrino emissivity due to thermal and beta processes. In particular, the beta processes are modeled in detail using a network of 204 isotopes. We show that the contribution of beta processes is substantial, especially in the high energy tail of the spectrum, at E > 3-4 MeV. For a star at D = 1 kpc, we find that a 17 ton liquid scintillator detector would observe several tens of events from a presupernova.
E-mail [email protected]

Primary author

Dr Kelly Patton (University of Washington/Institute for Nuclear Theory)

Co-authors

Dr Cecilia Lunardini (Arizona State University) Dr F. X. Timmes (Arizona State University) Dr Robert Farmer (University of Amsterdam)

Presentation materials