Abstract
Neutron stars formed in supernovae are very intense sources of neutrinos of all species and masses 100 MeV. If such neutrinos decayed via He+e-+e- inside the Galaxy, annihilation of the trapped positrons would yield a 511-keV line exceeding the experimental bounds by many orders of magnitude. This allows us to exclude decay lifetimes in the range 104-1015 sec for neutrinos of mass 1-100 MeV. Our result corroborates and extends earlier astrophysical bounds.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2146-2149 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 58 |
| Issue number | 20 |
| DOIs | |
| State | Published - 1987 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy