Constraints on Lorentz Invariance Violation from HAWC Observations of Gamma Rays above 100 TeV.
Document Type
Article
Publication Date
4-3-2020
Department
Department of Physics
Abstract
Because of the high energies and long distances to the sources, astrophysical observations provide a unique opportunity to test possible signatures of Lorentz invariance violation (LIV). Superluminal LIV enables the decay of photons at high energy. The high altitude water Cherenkov (HAWC) observatory is among the most sensitive gamma-ray instruments currently operating above 10 TeV. HAWC finds evidence of 100 TeV photon emission from at least four astrophysical sources. These observations exclude, for the strongest of the limits set, the LIV energy scale to 2.2×10^{31} eV, over 1800 times the Planck energy and an improvement of 1 to 2 orders of magnitude over previous limits.
Publication Title
Physical Review Letters
Recommended Citation
Albert, A.,
Alfaro, R.,
Alvarez, C.,
Angeles Camacho, J.,
Arunbabu, K.,
Brisbois, C.,
Fleischhack, H.,
Hona, B.,
Huang, D.,
Hüntemeyer, P.,
&
et al.
(2020).
Constraints on Lorentz Invariance Violation from HAWC Observations of Gamma Rays above 100 TeV..
Physical Review Letters,
124(13), 131101.
http://doi.org/10.1103/PhysRevLett.124.131101
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/1853