Marco Taoso

Possibility of a Dark Matter Interpretation for the Excess in Isotropic Radio Emission Reported by ARCADE

The ARCADE 2 Collaboration has recently measured an isotropic radio emission which is significantly brighter than the expected contributions from known extra–galactic sources. The simplest explanation of such excess involves a “new” population of unresolved sources which become the most numerous at very low (observationally unreached) brightness. We investigate this scenario in terms of synchrotron radiation induced by WIMP annihilations or decays in extragalactic halos. Intriguingly, for light–mass WIMPs with thermal annihilation cross–section, the level of expected radio emission matches the ARCADE observations.

Gravitino dark matter and neutrino masses with bilinear R-parity violation

Bilinear

Main sequence stars with asymmetric dark matter.

R

Primordial black hole dark matter from single field inflation

-parity violation provides an attractive origin for neutrino masses and mixings. In such schemes the gravitino is a viable decaying dark matter particle whose

Cosmological Radio Emission induced by WIMP Dark Matter

R

The isotropic radio background revisited

-parity violating decays lead to monochromatic photons with rates accessible to astrophysical observations. We determine the parameter region allowed by gamma-ray line searches, dark matter relic abundance, and neutrino oscillation data, obtaining a limit on the gravitino mass

On the merger rate of primordial black holes: effects of nearest neighbours distribution and clustering

{m}_{\stackrel{\texttildelow{}}{G}}\ensuremath{\lesssim}1\char21{}10\text{ }\text{ }\mathrm{GeV}

Dark matter synchrotron emission and radio observations

corresponding to a relatively low reheat temperature

Solar neutrinos constraints on light asymmetric dark matter.

{T}_{R}\ensuremath{\lesssim}\mathrm{\text{few}}\ifmmode\times\else\texttimes\fi{}{10}^{7}\char21{}{10}^{8}\text{ }\text{ }\mathrm{GeV}

Constraints on light asymmetric dark matter from solar neutrinos

. Neutrino mass and mixing parameters may be reconstructed at accelerator experiments like the Large Hadron Collider.