Neutrinos from Pre-supernova Star *
نویسندگان
چکیده
Analysis of the massive star properties during C, Ne, O & Si burning i.e. the neutrino-cooled stage, leads to the simplified neutrino emission model. In the framework of this model we have simulated spectrum of the antineutrinos. Flux normalized according to the massive star model with explicitly given neutrino luminosity allow us to predict signal produced in water Cherenkov detectors. The results are discussed from the point of view of the possibility of the core-collapse supernova event prediction in advance of a few days.
منابع مشابه
Detection possibility of the pair-annihilation neutrinos from the neutrino-cooled pre-supernova star
The signal produced in neutrino observatories by the pair-annihilation neutrinos emitted from a 20 M⊙ pre-supernova star at the silicon burning phase is estimated. The spectrum of the neutrinos with an average energy ∼2 MeV is calculated with the use of the Monte Carlo method. A few relevant reactions for neutrinos and anti-neutrinos in modern detectors are considered. The most promising result...
متن کاملNeutrinos and the Supernova Origin of the Elements
Intense fluxes of neutrinos are emitted by the hot neutron star produced in a supernova. The average supernova neutrino energies satisfy a robust hierarchy 〈Eνe〉 < 〈Eν̄e〉 < 〈Eνμ(τ)〉 ≈ 〈Eν̄μ(τ)〉. The νe and ν̄e capture reactions on neutrons and protons, respectively, provide heating to drive a wind from the hot neutron star. The same reactions also determine the neutron-richness of the wind materia...
متن کاملThe Supernova Early Warning System
A core collapse in the Milky Way will produce an enormous burst of neutrinos in detectors worldwide. Such a burst has the potential to provide an early warning of a supernova's appearance. I will describe the nature of the signal, the sensitivity of current detectors, and SNEWS, the SuperNova Early Warning System, a network designed to alert astronomers as soon as possible after the detected ne...
متن کاملTeV neutrinos and GeV photons from shock breakout in supernovae.
We show that as a Type II supernova shock breaks out of its progenitor star, it becomes collisionless and may accelerate protons to energies >10 TeV. Inelastic nuclear collisions of these protons produce an approximately 1 h long flash of TeV neutrinos and 10 GeV photons, about 10 h after the thermal (10 MeV) neutrino burst from the cooling neutron star. A Galactic supernova in a red supergiant...
متن کاملSupernova Neutrinos
A nascent neutron star resulting from stellar collapse is a prodigious source of neutrinos of all flavors. While the most basic features of this neutrino emission can be estimated from simple considerations, the detailed simulation of the neutrinos’ decoupling from the hot neutron star is not yet computationally tractable in its full glory, being a time-dependent six-dimensional transport probl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004