TY  - JOUR
AU  - Caputo, A.
AU  - Regis, M.
AU  - Taoso, M.
AU  - Witte, S. J.
PY  - 2019
DA  - 2019//
TI  - Detecting the stimulated decay of axions at radio frequencies
T2  - J. Cosmol. Astropart. Phys.
JO  - Journal of Cosmology and Astroparticle Physics
SP  - 027
EP  - 22pp
VL  - 03
IS  - 3
PB  - Iop Publishing Ltd
KW  - axions
KW  - dark matter theory
KW  - dark matter detectors
KW  - dwarfs galaxies
AB  - Assuming axion-like particles account for the entirety of the dark matter in the Universe, we study the possibility of detecting their decay into photons at radio frequencies. We discuss different astrophysical targets, such as dwarf spheroidal galaxies, the Galactic Center and halo, and galaxy clusters. The presence of an ambient radiation field leads to a stimulated enhancement of the decay rate; depending on the environment and the mass of the axion, the effect of stimulated emission may amplify the photon flux by serval orders of magnitude. For axion-photon couplings allowed by astrophysical and laboratory constraints (and possibly favored by stellar cooling), we find the signal to be within the reach of next-generation radio telescopes such as the Square Kilometer Array.
SN  - 1475-7516
UR  - https://arxiv.org/abs/1811.08436
UR  - https://doi.org/10.1088/1475-7516/2019/03/027
DO  - 10.1088/1475-7516/2019/03/027
LA  - English
N1  - WOS:000461450100002
ID  - Caputo_etal2019
ER  -