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 instrument 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.
Searching for TeV DM evidence from Dwarf Irregular Galaxies with the HAWC Observatory / Cadena, S. H.; Alfaro, R.; Sandoval, A.; Belmont, E.; Leon, H.; Gammaldi, V.; Karukes, E.; Salucci, P.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - (2017), pp. 1-7. (Intervento presentato al convegno 35th International Cosmic Ray Conference, ICRC 2017 tenutosi a Bexco, Busan; South Korea nel 2017).
Searching for TeV DM evidence from Dwarf Irregular Galaxies with the HAWC Observatory
Gammaldi V.;Karukes E.;Salucci P.
2017-01-01
Abstract
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 instrument 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.| File | Dimensione | Formato | |
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