The neutrino emission from thermal processes in very massive stars in the local universe

ABSTRACT We present a new overview of the life very massive stars (VMS) in terms neutrino emission from thermal processes: pair annihilation, plasmon decay, photoneutrino process, bremsstrahlung, and recombination processes burning stages selected VMS models. use realistic conditions temperature, density, electron fraction, nuclear isotropic composition VMS. Results are presented for set progenitor with mass 150, 200, 300 M?Z = 0.002 500 0.006 rotating models which expected to explode as instability supernova at end their except M? would up black hole. It is found that VMS, occurs early towards hydrogen stage due high initial temperature density these calculate total emissivity, Q? luminosity, L? using structure profile each observed contribution (H He) annihilation advanced stages. Pair most dominant energy loss mechanisms throughout evolutionary track At O-burning stage, luminosity ?1047?48 erg s?1 depending on metallicity slightly higher than stars. This could shed light possibility detection neutrinos locate candidates our local universe.