A Galactic Halo Origin of the Neutrinos Detected by IceCube

Taylor, Andrew M.; Gabici, Stefano; Aharonian, Felix A.

doi:10.1103/PhysRevD.89.103003

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

A Galactic Halo Origin of the Neutrinos Detected by IceCube

MPS-Authors

/persons/resource/persons30244

Aharonian, Felix A.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;
Dublin Institute for Advaced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland;
Gran Sasso Science Institute, viale Francesco Crispi 7, 67100 L'Auqila, Italy;

External Resource

http://link.aps.org/doi/10.1103/PhysRevD.89.103003
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

1403.3206.pdf
(Preprint), 171KB

Supplementary Material (public)

There is no public supplementary material available

Citation

Taylor, A. M., Gabici, S., & Aharonian, F. A. (2014). A Galactic Halo Origin of the Neutrinos Detected by IceCube. Physical Review D, 89(10): 103003. doi:10.1103/PhysRevD.89.103003.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-2B91-7

Abstract

Recent IceCube results suggest that the first detection of very high energy astrophysical neutrinos have been accomplished. We consider these results at face value in a Galactic origin context. Emission scenarios from both the Fermi bubble and broader halo region are considered. We motivate that such an intensity of diffuse neutrino emission could be Galactic in origin if it is produced from an outflow into the halo region. This scenario requires cosmic ray transport within the outflow environment to be different to that inferred locally within the disk and that activity in the central part of the Galaxy accelerates cosmic rays to trans-"knee" energies before they escape into an outflow. The presence of a large reservoir of gas in a very extended halo around the Galaxy, recently inferred from X-ray observations, implies that relatively modest acceleration power of 10³⁹ erg s^-1 in PeV energy cosmic rays may be sufficient to explain the observed neutrino flux. Such a luminosity is compatible with that required to explain the observed intensity of cosmic rays around the "knee".