Journal article
Searching for dark matter signals from local dwarf spheroidal galaxies at low radio frequencies in the GLEAM survey
RHW Cook, N Seymour, K Spekkens, N Hurley-Walker, PJ Hancock, ME Bell, JR Callingham, BQ For, TMO Franzen, BM Gaensler, L Hindson, M Johnston-Hollitt, AD Kapińska, J Morgan, AR Offringa, P Procopio, L Staveley-Smith, RB Wayth, C Wu, Q Zheng
Monthly Notices of the Royal Astronomical Society | OXFORD UNIV PRESS | Published : 2020
Abstract
The search for emission from weakly interacting massive particle (WIMP) dark matter annihilation and decay has become a multipronged area of research not only targeting a diverse selection of astrophysical objects, but also taking advantage of the entire electromagnetic spectrum. The decay of WIMP particles into standard model particles has been suggested as a possible channel for synchrotron emission to be detected at low radio frequencies. Here, we present the stacking analysis of a sample of 33 dwarf spheroidal (dSph) galaxies with low-frequency (72-231 MHz) radio images from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey. We produce radial surface brightn..
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Funding Acknowledgements
[ "This scientific work makes use of the Murchison Radioastronomy Observatory, operated by CSIRO. We acknowledge the Wajarri Yamatji people as the traditional owners of the Observatory site. Support for the operation of the MWA is provided by the Australian Government (NCRIS), under a contract to Curtin University administered by theAstronomy Australia Limited. We acknowledge the Pawsey Supercomputing Centre, which is supported by the Western Australian and Australian Governments.", "This research made use of DS9, a tool for data visualization supported by the Chandra X-ray Science Center (CXC) and the High Energy Astrophysics Science Archive Center (HEASARC) with support from the JWST Mission office at the Space Telescope Science Institute for three-dimensional visualization." ]