Neutrino emissivity under influence of strong magnetic field and its effects under cooling of neutron stars

May 10, 2013, 10:15 AM
30m
Allegro Varadero Hotel

Allegro Varadero Hotel

Talk SMFNS2013

Speaker

Eduardo Lenho Coelho (Universidade do Estado do Rio de Janeiro, Brazil)

Description

Direct Urca process is an extremely efficient mechanism for cooling a proto neutron star after its formation. It is believed to be the process responsible for the cooling of young neutron stars after the first 100 years of life. One of the most interesting kind of neutron stars are the pulsars, which are highly magnetized neutron stars, with fields up to 10^14 G at the surface. It is natural then to inquiry about the modifications in the cooling due to Urca process in pulsars. In this work we investigate the influence of strong magnetic fields on the cooling of pulsars due to the neutrino emissivity coming from direct Urca process. The matter is described using a relativistic mean-field model at zero temperature. We calculate numerically the emissivity of neutrinos for different magnetic fields as a function of the baryon density and compare the results for the case without a magnetic field.

Primary authors

Eduardo Lenho Coelho (Universidade do Estado do Rio de Janeiro, Brazil) Marcelo Chiapparini (Universidade do Estado do Rio de Janeiro, Brazil) Mirian E. Bracco (Universidade do Estado do Rio de Janeiro, Brazil) Rodrigo Negreiros (Universidade Federal Fluminense, Brazil)

Presentation materials