publication . Article . 2017

Search for Very High-energy Gamma Rays from the Northern Fermi Bubble Region with HAWC

Abeysekara, AU; Albert, A; Alfaro, R; Alvarez, C; Alvarez, JD; Arceo, R; Arteaga-Velázquez, JC; Ayala Solares, HA; Barber, AS; Bautista-Elivar, N; ...
Open Access English
  • Published: 20 Jun 2017
  • Publisher: eScholarship, University of California
  • Country: United States
Abstract
© 2017. The American Astronomical Society. All rights reserved. We present a search for very high-energy gamma-ray emission from the Northern Fermi Bubble region using data collected with the High Altitude Water Cherenkov gamma-ray observatory. The size of the data set is 290 days. No significant excess is observed in the Northern Fermi Bubble region, so upper limits above 1 TeV are calculated. The upper limits are between and . The upper limits disfavor a proton injection spectrum that extends beyond 100 TeV without being suppressed. They also disfavor a hadronic injection spectrum derived from neutrino measurements.
Subjects
arXiv: Astrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::ExperimentAstrophysics::Instrumentation and Methods for AstrophysicsHigh Energy Physics::Phenomenology
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