Initial neutrino loss in neutron star formation

Details Initial neutrino loss in neutron star formation Initial neutrino loss in neutron star formation

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...261..321g&link_type=abstract

Astrophysical Journal, Part 1, vol. 261, Oct. 1, 1982, p. 321-331. Research supported by the Nordisk Institut for Teoretisk Ato

Astronomy and Astrophysics

Astrophysics

3

Diffusion Coefficient, Neutrinos, Neutron Stars, Particle Diffusion, Star Formation, Stellar Mass Ejection, Degenerate Matter, Dense Plasmas, Energy Dissipation, Gravitational Collapse, Nonlinear Equations, Nucleons, Stellar Temperature

Scientific paper

The nonlinear diffusion equation which describes the initial loss of neutrinos from the inner core of a newly formed neutron star is solved numerically. The diffusion coefficient used is that appropriate to degenerate neutrinos in dense matter taking into account both absorption and scattering of neutrinos by nucleons. It is found that the time for the neutrinos to escape cannot be less than approximately 1 s. This time is primarily determined by the transport processes in the core and is insensitive to the boundary conditions. Energy dissipation due to neutrino loss is calculated and is found to be rather insensitive to the diffusion coefficient. Maximum dissipation occurs in the outer regions of the core where the diffusion coeficient is largest and the heat capacity the smallest. The resultant temperature increase is modest and so not sufficient to significantly increase the pressure. The lost times are too long for neutrino escape to be dynamically useful in matter ejection processes which occur on millisecond time scales. The loss of these neutrinos can therefore be neglected in determining the dynamic processes of neutron star formation.

Affiliated with

Also associated with

No associations

Rating

Initial neutrino loss in neutron star formation 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 Initial neutrino loss in neutron star formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Initial neutrino loss in neutron star formation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1029213