95% CL upper limits on DM annihilation cross section and decay rate are set from polarized and total synchrotron emission in M31, LMC, Draco, Sculptor, and Coma using Planck maps and numerical propagation modeling.
Dark matter in the Reticulum II dSph: a radio search
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We present a deep radio search in the Reticulum II dwarf spheroidal (dSph) galaxy performed with the Australia Telescope Compact Array. Observations were conducted at 16 cm wavelength, with an rms sensitivity of 0.01 mJy/beam, and with the goal of searching for synchrotron emission induced by annihilation or decay of weakly interacting massive particles (WIMPs). Data were complemented with observations on large angular scales taken with the KAT-7 telescope. We find no evidence for a diffuse emission from the dSph and we derive competitive bounds on the WIMP properties. In addition, we detect more than 200 new background radio sources. Among them, we show there are two compelling candidates for being the radio counterpart of the possible gamma-ray emission reported by other groups using Fermi-LAT data.
fields
astro-ph.GA 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Polarized and unpolarized synchrotron emission from dark matter in extragalactic targets
95% CL upper limits on DM annihilation cross section and decay rate are set from polarized and total synchrotron emission in M31, LMC, Draco, Sculptor, and Coma using Planck maps and numerical propagation modeling.