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Search for Very High Energy Gamma Rays from the Northern textit{Fermi} Bubble Region with HAWC

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arxiv 1703.01344 v2 pith:DPRQ2JAI submitted 2017-03-03 astro-ph.HE

Search for Very High Energy Gamma Rays from the Northern textit{Fermi} Bubble Region with HAWC

A.U. Abeysekara , A. Albert , R. Alfaro , C. Alvarez , J.D. \'Alvarez , R. Arceo , J.C. Arteaga-Vel\'azquez , H.A. Ayala Solares
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classification astro-ph.HE
keywords textbubblefermihighlimitsnorthernregiontextit
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We present a search of very high energy gamma-ray emission from the Northern $\textit{Fermi}$ Bubble region using data collected with the High Altitude Water Cherenkov (HAWC) gamma-ray observatory. The size of the data set is 290 days. No significant excess is observed in the Northern $\textit{Fermi}$ Bubble region, hence upper limits above $1\,\text{TeV}$ are calculated. The upper limits are between $3\times 10^{-7}\,\text{GeV}\, \text{cm}^{-2}\, \text{s}^{-1}\,\text{sr}^{-1}$ and $4\times 10^{-8}\,\text{GeV}\,\text{cm}^{-2}\,\text{s}^{-1}\,\text{sr}^{-1}$. The upper limits disfavor a proton injection spectrum that extends beyond $100\,\text{TeV}$ without being suppressed. They also disfavor a hadronic injection spectrum derived from neutrino measurements.

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Cited by 1 Pith paper

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  1. The Southern Wide-Field Gamma-Ray Observatory (SWGO): A Next-Generation Ground-Based Survey Instrument for VHE Gamma-Ray Astronomy

    astro-ph.IM 2019-07 unverdicted novelty 4.0

    SWGO is proposed as a wide-field VHE gamma-ray survey instrument with a compact inner detector array and sparser outer array, estimated at 54M USD construction cost and full operations by 2026.