Abstract
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.
Original language | English |
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Article number | 85 |
Pages (from-to) | 85 |
Journal | Astrophysical Journal |
Volume | 842 |
Issue number | 2 |
DOIs | |
Publication status | Published - 20 Jun 2017 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017. The American Astronomical Society. All rights reserved.
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science