Searching for TeV DM evidence from Dwarf Irregular Galaxies with the HAWC Observatory

Andr\'es Sandoval; Ekaterina Karukes; Ernesto Belmont; Hermes Le\'on; Paolo Salucci (for the HAWC Collaboration); Rub\'en Alfaro; Sergio Hern\'andez Cadena; Viviana Gammaldi

Searching for TeV DM evidence from Dwarf Irregular Galaxies with the HAWC Observatory

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arxiv 1708.04642 v1 pith:VBKKEOPA submitted 2017-08-15 astro-ph.HE

Sergio Hernández Cadena , Rubén Alfaro , Andrés Sandoval , Ernesto Belmont , Hermes León , Viviana Gammaldi , Ekaterina Karukes , Paolo Salucci (for the HAWC Collaboration) This is my paper · ORCID

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keywords galaxiesdirrhawcdwarfirregularobservatorysearchesaltitude

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The dynamics of dwarf irregular (dIrr) galaxies are observed to be dominated by dark matter (DM). Recently, the DM density distribution has been studied for 31 dIrrs. Their extended DM halo (Burket type profile) makes these objects good candidates for DM searches. Located in Puebla (Mexico), the High Altitude Water Cherenkov (HAWC) Observatory is an optimal in- strument to perform such DM searches, because of its large sky coverage (8.4 sr per day). We analyzed a set of two years of HAWC data and we found no significant DM signal from dIrr galaxies. We present the upper limits for DM annihilation cross-section with dIrr galaxies.

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Dark Matter searches towards the WLM dwarf irregular galaxy with H.E.S.S
astro-ph.HE 2019-08 accept novelty 6.0 of 10

First IACT observations of dwarf irregular galaxy WLM find no gamma-ray excess and set 95% CL upper limits on dark matter annihilation cross section, reaching about 10^-21 cm^3/s for the tau+tau- channel at 1 TeV.

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