7–11 Aug 2017
Columbus, Ohio, USA
US/Eastern timezone

High-Energy Gamma Rays and Neutrinos from Nearby Radio Galaxies

8 Aug 2017, 17:00
15m
Corinthian Room (The Athenaeum)

Corinthian Room

The Athenaeum

Oral Gamma rays Gamma rays

Speaker

Mr Carlos Blanco (University of Chiago, Department of Physics)

Description

Radio Galaxies are the most likely class of sources for the diffuse flux of high-energy neutrinos reported by the IceCube Collaboration as suggested by multi-messenger data. Here, the gamma-ray spectrum from four nearby radio galaxies (Centaurus A, PKS 0625-35, NGC 1275, and IC 310) is analyzed in order to constrain the spectral shape and intensity of their respective injected emission. Our analysis handles gamma ray propagation though galactic and extragalactic environments accounting for the effects of electromagnetic cascades. Assuming interactions of cosmic ray protons with gas are the origin of this gamma-ray emission, we calculate the resulting neutrino flux for the selected sources. While the predicted neutrino fluxes are consistent with constraints published by the IceCube and ANTARES Collaborations, they consistently fall within an order of magnitude below the current point source sensitivity. The prospects appear very encouraging for the future detection of neutrino emission from the nearest radio galaxies.predicted from each of these sources. Although this scenario is consistent with the constraints published by the IceCube and ANTARES Collaborations, the predicted fluxes consistently fall within an order of magnitude of the current point source sensitivity. The prospects appear very encouraging for the future detection of neutrino emission from the nearest radio galaxies.

Primary authors

Mr Carlos Blanco (University of Chiago, Department of Physics) Dr Dan Hooper (Fermi National Accelerator Laboratory, Center for Particle Astrophysics)

Presentation materials