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Revisiting the diffuse neutrino flux from the inner Galaxy using new constraints from very high energy γ-ray observations

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Gabici,  Stefano
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Taylor,  Andrew
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Aharonian,  Felix
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Casanova,  Sabrina
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Citation

Gabici, S., Taylor, A., White, R., Aharonian, F., & Casanova, S. (2009). Revisiting the diffuse neutrino flux from the inner Galaxy using new constraints from very high energy γ-ray observations. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 602(1), 113-116.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-75CE-9
Abstract
Following the MILAGRO collaborations recent publication of the detection of diffuse multi-TeV emission from a region close to the inner Galaxy, we revisit the diffuse neutrino flux calculation from this region. Conventional models following cosmic ray (CR) propagation through the Galaxy, tuned to reproduce the locally observed CR spectrum, give rise to diffuse fluxes that are significantly below the detected diffuse flux. Assuming that this excess is hadronic in origin and is representative of the whole inner Galactic region, we estimate the expected diffuse neutrino flux from a region of the Galactic disk with coordinates −40 < l < 40. The diffuse flux of neutrinos, for this hadronic only scenario, is found to be detectable by a km3-scale detector located in the northern hemisphere.