[SEMINARI] Dark Matter and Hidden Photons with Radio Observations, A.P. Lobanov

[Enric Marco]

Title: Dark Matter and Hidden Photons with Radio Observations

By: A.P. Lobanov

From: Max-Planck-Institut für Radioastronomie, Bonn, Alemanya

Where: Seminari del departament d'Astronomia i Astrofísica

Date: Dijous 21 juliol 2011

Hour: 12:00

Resum

Providing observational evidence for physics beyond the standard model 
is one of the pivotal research areas in modern particle physics and 
cosmology. Weakly interacting (massive or sub-eV) particles (WIMP or 
WISP), such as neutralinos, Most extensions of the standard model beyond 
the electroweak scale (most notably the supersymmetric and string theory 
models) predict existence of weakly interacting particles responsible 
for coupling to the SM physics, with WIMP (e.g., neutralinos with masses 
in the GeV to TeV range) and WISP (e.g., axions, axion-like particles 
and hidden photons with masses in the sub-eV range) positioned as the 
most promising candidates. A new dimension to searches for WIMP and WISP 
is provided by extending the searches to lower energies sampled by radio 
observations at frequencies below 40 GHz (7.5 mm). Observations in the 
0.03-40 GHz bear an excellent potential to constrain the properties of 
the neutralino dark matter (DM) annihilation and offer an effective way 
of probing the hidden photons with masses below 10-15 eV. Potentials and 
early results from such studies will be discussed in this talk, 
focussing in particular on detecting the neutralino DM annihilation 
signal from dwarf spheroidal galaxies and unidentified Fermi/LAT 
gamma-ray sources and searching for WISP photon-photon oscillations in 
the radio regime using supernova remnants and active galactic nuclei.

-- 
/------------------------------------\
 Dr. Enric Marco
 Departament d'Astronomia i Astrofísica
 Facultat de Física
 Universitat de València
 C/  Dr. Moliner, 50
 46100 Burjassot, Spain
 Phone: (34)-96-354-3069
 Fax:(34)-96-354-3084
 enric.marco en uv.es
 http://www.uv.es/marco
 http://www.uv.es/aulaastronomia
 http://www.uv.es/daa
 \--------------------------------------/