Speaker
Ke Fang
(University of Chicago)
Description
Fast-spinning newborn pulsars are promising sources of ultrahigh energy cosmic rays (UHECRs). With proper injection abundances, integrated cosmic rays from the extragalactic pulsar population can match UHE observation in all aspects - energy spectrum, chemical composition, and anisotropy. High-energy neutrinos would be produced unavoidably, when accelerated UHECRs travel through the supernova envelope surrounding the pulsar. In this talk, we will investigate this neutrino production process, including the hadronuclear interaction between cosmic rays and the background, and possible suppression due to the pion interaction. We will report the spectrum, flux and flavor ratio of the high-energy neutrinos from pulsars, and compare their detectability to sensitivities of current and future experiments. Finally, we will discuss our model dependence on the source emissivity, the distribution of pulsar population at birth, as well as the injection composition of cosmic rays.
Primary author
Ke Fang
(University of Chicago)
Co-authors
Dr
Angela Olinto
(University of Chicago)
Dr
Kohta Murase
(Pennsylvania State University)
Dr
Kumiko Kotera
(Institut d’Astrophysique de Paris)
