Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2017/02/019
Keywords
neutrino theory; supernova neutrinos
Funding
- Dept. of Science and Technology of the Govt. of India through a Ramanujam Fellowship
- Max-Planck-Gesellschaft through a Max-Planck-Partnergroup
- Italian Ministero dell'Istruzione, Universita e Ricerca (MIUR)
- Istituto Nazionale di Fisica Nucleare (INFN) through the Theoretical Astroparticle Physics projects
Ask authors/readers for more resources
It has been recently pointed out that neutrino fluxes from a supernova can show substantial flavor conversions almost immediately above the core. Using linear stability analyses and numerical solutions of the fully nonlinear equations of motion, we perform a detailed study of these fast conversions, focussing on the region just above the supernova core. We carefully specify the instabilities for evolution in space or time, and find that neutrinos travelling towards the core make fast conversions more generic, i.e., possible for a wider range of flux ratios and angular asymmetries that produce a crossing between the zenithangle spectra of nu(e) and nu(e). Using fluxes and angular distributions predicted by supernova simulations, we find that fast conversions can occur within tens of nanoseconds, only a few meters away from the putative neutrinospheres. If these fast flavor conversions indeed take place, they would have important implications for the supernova explosion mechanism and nucleosynthesis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available