TeV-PeV energy neutrinos and gamma rays from extragalactic milli-second pulsars

Abstract

The origin of the detected diffuse flux of extragalactic Pe V neutrinos during 2010 - 2017 by the Ice Cube Experiment is not clear and various models with sources were proposed for it. In the present work, we try to find theoretically whether pulsars could be one possible source. With our study, we found that the extragalactic millisecond pulsars which are newly born may be one possible source of Pe V neutrinos and gamma rays. For the purpose, we took two-step particle acceleration scheme for transferring the rotational energy to the electrons which are accelerated to high energy or boosted up to ~ 0.01 EeV energies or above. The high energy boosted electrons interacted with cold positrons and soft radiation in the acceleration zone might produce Ultra High Energy (UHE) neutrinos and gamma rays. The theoretically derived extragalactic muon neutrino energies are found consistent with the Ice Cube detection.