Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-03-16
Astronomy and Astrophysics
Astrophysics
18pages + 9figures
Scientific paper
We calculated the energy spectra and the fluxes of electron neutrinos in extragalactic space emitted in the process of the evaporation of primordial black holes (PBHs) in the early universe. It was assumed that PBHs are formed by a blue power-law spectrum of primordial density fluctuations. In the calculations of neutrino spectra the spectral index of density fluctuations and the reheating temperature were used as free parameters. The absorption of neutrinos during propagation in the space was taken into account. We obtained the bounds on the spectral index assuming validity of the standard picture of gravitational collapse and using the available data of several experiments with atmospheric and solar neutrinos. The comparison of our results with the previous constraints (which had been obtained using diffuse photon background data) shows that such bounds are quite sensitive to an assumed form of the initial PBH mass function.
Bugaev Eh. V.
Konishchev K. V.
No associations
LandOfFree
Extragalactic neutrino background from PBHs evaporation 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 Extragalactic neutrino background from PBHs evaporation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extragalactic neutrino background from PBHs evaporation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-638980