Speaker
Dr
J. Hidaka
(Mechanical Engineering Department, Meisei University, 2-1-1 Hodokubo, Hino, Tokyo 191-8506, Japan)
Description
Energy spectrum of relic supernova neutrinos (RSNs) tells us valuable information
about cosmic core-collapsed SNe as neutrino sources and their cosmological
evolution. Recent astronomical observations and theoretical studies of SNe give
new insights on stellar evolution, which also influence supernova explosion
mechanism. RSN energy spectrum is an important tool to investigate interesting
consequences of these new findings. We show our results of RSN spectrum [3,4]
based on two astronomical problems, the supernova rate [1] and the red supergiant
problem [2] . They reveal the signature of nuclear EoS dependence for SNe
models. The cosmological galaxy evolution, the star formation history, and
metallicity dependence of SNe are all connected each other, and they have an
influence on RSN spectrum in terms of how SNe explode. We also discuss these
issues..
[1] S. Horiuchi et al., Phys. Rev. D, 79, 0830138 (2009)
[2] S. J. Smartt, PASA, 32, 16 (2015)
[3] G. J. Mathews et al., ApJ, 790, 115 (2014)
[4] J. Hidaka et al., ApJ, 827, 6 (2016)
Primary author
Dr
J. Hidaka
(Mechanical Engineering Department, Meisei University, 2-1-1 Hodokubo, Hino, Tokyo 191-8506, Japan)
Co-authors
Prof.
Grant Mathews
(University of Notre Dame)
Prof.
Taka Kajino
(National Astronomical Observatory of Japan, The University of Tokyo)
