TY - JOUR
T1 - The EMU view of the Large Magellanic Cloud : troubles for sub-TeV WIMPs
AU - Regis, Marco
AU - Reynoso-Cordova, Javier
AU - Filipović, Miroslav D.
AU - Brüggen, Marcus
AU - Carretti, Ettore
AU - Collier, Jordan
AU - Hopkins, Andrew M.
AU - Lenc, Emil
AU - Maio, Umberto
AU - Marvil, Joshua R.
AU - Norris, Ray P.
AU - Vernstrom, Tessa
PY - 2021
Y1 - 2021
N2 - We present a radio search for WIMP dark matter in the Large Magellanic Cloud (LMC). We make use of a recent deep image of the LMC obtained from observations of the Australian Square Kilometre Array Pathfinder (ASKAP), and processed as part of the Evolutionary Map of the Universe (EMU) survey. LMC is an extremely promising target for WIMP searches at radio frequencies because of the large J-factor and the presence of a substantial magnetic field. We detect no evidence for emission arising from WIMP annihilations and derive stringent bounds on the annihilation rate as a function of the WIMP mass, for different annihilation channels. This work excludes the thermal cross section for masses below 480 GeV and annihilation into quarks.
AB - We present a radio search for WIMP dark matter in the Large Magellanic Cloud (LMC). We make use of a recent deep image of the LMC obtained from observations of the Australian Square Kilometre Array Pathfinder (ASKAP), and processed as part of the Evolutionary Map of the Universe (EMU) survey. LMC is an extremely promising target for WIMP searches at radio frequencies because of the large J-factor and the presence of a substantial magnetic field. We detect no evidence for emission arising from WIMP annihilations and derive stringent bounds on the annihilation rate as a function of the WIMP mass, for different annihilation channels. This work excludes the thermal cross section for masses below 480 GeV and annihilation into quarks.
UR - https://hdl.handle.net/1959.7/uws:65517
U2 - 10.1088/1475-7516/2021/11/046
DO - 10.1088/1475-7516/2021/11/046
M3 - Article
SN - 1475-7516
VL - 2021
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 11
M1 - 46
ER -