6533b82cfe1ef96bd128e92b

RESEARCH PRODUCT

Collective effects inνν¯synchrotron radiation from neutron stars

subject

description

We have considered the collective effects in $\ensuremath{\nu}\overline{\ensuremath{\nu}}$ synchrotron radiation from an ultrarelativistic degenerate electron gas in neutron stars with strong magnetic fields. For this problem we apply a calculation method which explicitly makes use of the fact that the radiating electron moves semiclassically, but takes into account the interaction among particles in a quantum way. First we apply this method to calculate $\ensuremath{\nu}\overline{\ensuremath{\nu}}$ synchrotron radiation by an ultrarelativistic electron in vacuum and we compare this result with that obtained previously by other techniques. When a degenerate plasma is considered, we show that collective effects lead to an essential enhancement (about three times) of the vector weak-current contribution to neutrino pair emissivity.