4-6 May 2015
Union South
US/Central timezone

High-energy neutrinos from a nearby newborn pulsar

5 May 2015, 16:20
The Marquee, 2nd Floor (Union South)

The Marquee, 2nd Floor

Union South

1308 West Dayton Street, Madison, WI 53706
Neutrino Astrophysics Neutrino Astrophysics


Ke Fang (University of Chicago)


The electromagnetic wind of a fast-spinning pulsar provides favorable sites for cosmic ray acceleration from PeV to ultrahigh energies. We show that high-energy neutrinos are guaranteed to be produced in this system, when the accelerated particles interact with the dense baryons of the supernova ejecta. We study the light curves and energy spectrum of the neutrinos using both numerical and analytical methods. We find that the neutrino spectral index varies from 1.5 to 2, as a result of the interplay between the pulsar spin-down and the evolution of the supernova environment. We then discuss the impact of the chemical composition of the parent cosmic rays on the neutrino production. Moreover, we apply to the scenario to existing nearby young pulsars and find the corresponding neutrino flux consistent with the current non-detections. Finally, we explore the detectability of the high-energy neutrinos from future newborn pulsars in the Local Universe in light of current and next generation neutrino telescopes.

Primary author

Ke Fang (University of Chicago)

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