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TeV Gamma Rays From Galactic Center Pulsars

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arxiv 1705.09293 v2 pith:TPWH3WDS submitted 2017-05-25 astro-ph.HE astro-ph.GAhep-ph

Dan Hooper , Ilias Cholis , Tim Linden This is my paper · ORCID
classification astro-ph.HEastro-ph.GAhep-ph
keywords emissionpulsarscentergalactichalosneartelescopesagreement
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abstract

Measurements of the nearby pulsars Geminga and B0656+14 by the HAWC and Milagro telescopes have revealed the presence of bright TeV-emitting halos surrounding these objects. If young and middle-aged pulsars near the Galactic Center transfer a similar fraction of their energy into TeV photons, then these sources could plausibly dominate the emission that is observed by HESS and other ground-based telescopes from the innermost $\sim$$10^2$ parsecs of the Milky Way. In particular, both the spectral shape and the angular extent of this emission is consistent with TeV halos produced by a population of pulsars, although the reported correlation of this emission with the distribution of molecular gas suggests that diffuse hadronic processes also must contribute. The overall flux of this emission requires a birth rate of ~100-1000 neutron stars per Myr near the Galactic Center, in good agreement with recent estimates.

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  1. The Cherenkov Telescope Array view of the Galactic Center region

    astro-ph.HE 2019-08 conditional novelty 4.0 of 10

    Simulations of the planned CTA Galactic Center survey show that the observatory should reconstruct the central source spectrum with percent-level statistical precision and detect faint hour-long flares.

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