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Search for Decaying Dark Matter in the Virgo Cluster of Galaxies with HAWC

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arxiv 2309.03973 v2 pith:VZBZ2SEZ submitted 2023-09-07 astro-ph.HE hep-ph

Search for Decaying Dark Matter in the Virgo Cluster of Galaxies with HAWC

A. Albert , R. Alfaro , J.C. Arteaga-Vel\'azquez , H.A. Ayala Solares , R. Babu , E. Belmont-Moreno , K.S. Caballero-Mora , T. Capistr\'an
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A. Carrami\~nana S. Casanova J. Cotzomi S. Couti\~no de Le\'on D. Depaoli R. Diaz Hernandez M.A. DuVernois M. Durocher N. Fraija J.A. Garc\'ia-Gonz\'alez M.M. Gonz\'alez J.A. Goodman J.P. Harding S. Hern\'andez-Cadena I. Herzog D. Huang F. Hueyotl-Zahuantitla V. Joshi S. Kaufmann H. Le\'on Vargas J.T. Linnemann A.L. Longinotti G. Luis-Raya K. Malone J. Mart\'inez-Castro J.A. Matthews P. Miranda-Romagnoli J.A. Morales-Soto M. Mostaf\'a A. Nayerhoda L. Nellen M.U. Nisa R. Noriega-Papaqui N. Omodei E.G. P\'erez-P\'erez C.D. Rho D. Rosa-Gonz\'alez M. Schneider Y. Son R.W. Springer O. Tibolla K. Tollefson I. Torres R. Torres-Escobedo R. Turner F. Ure\~na-Mena L. Villase\~nor X. Wang I.J. Watson S. Yun-C\'arcamo
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classification astro-ph.HE hep-ph
keywords darkmattersearchclustervirgoabovedecaygalaxies
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The decay or annihilation of dark matter particles may produce a steady flux of very-high-energy gamma rays detectable above the diffuse background. Nearby clusters of galaxies provide excellent targets to search for the signatures of particle dark matter interactions. In particular, the Virgo cluster spans several degrees across the sky and can be efficiently probed with a wide field-of-view instrument. The High Altitude Water Cherenkov (HAWC) observatory, due to its wide field of view and sensitivity to gamma rays at an energy scale of 300 GeV--100 TeV is well-suited for this search. Using 2141 days of data, we search for gamma-ray emission from the Virgo cluster, assuming well-motivated dark matter sub-structure models. Our results provide some of the strongest constraints on the decay lifetime of dark matter for masses above 10 TeV.

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