Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-08-10
Astronomy and Astrophysics
Astrophysics
10 pages, 4 figures, proceedings for the International Workshop on the Energy Budget in the High Energy Universe, Kashiwa camp
Scientific paper
I discuss neutrino production in supernovae (SNe) and the detection of both Galactic core collapse events and the diffuse extra-galactic MeV neutrino background expected from the integrated history of star formation. In particular, I consider what processes might affect our expectations for both. I focus on ``rapid'' rotation, defined as leading to millisecond initial neutron star spin periods. Rotation affects the neutrino luminosity, the average neutrino energy, the duration of the Kelvin-Helmholtz cooling epoch, and the ratios of luminosities and average energies between neutrino species; it can strongly suppresses the anti-electron as well as mu, anti-mu, tau, and anti-tau neutrino fluxes relative to those for the electron neutrinos. As a result, depending on the prevalence of rapid rotation in SN progenitors through cosmic time, this may affect predictions for the MeV neutrino background and the history of nucleosynthetic enrichment. I emphasize connections between the MeV neutrino background and tracers of the star formation rate density at high redshift in other neutrino and photon wavebands.
No associations
LandOfFree
Aspects of Neutrino Production in Supernovae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aspects of Neutrino Production in Supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aspects of Neutrino Production in Supernovae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-547615