Astrophysical signatures of light dark matter

Not so dark matter

Reality

The 511 keV line

Gamma rays

Heat from cold dark matter?

Conclusions



  • Accelerator constraints
    • Direct detection
    • NuTeV anomaly
    • Fine structure constant

  • Relic density
    • a + b(v/c)2 ~ 10-26 cm3 s-1

  • Milky Way
    • Gamma rays
    • 511 keV line

Yago Ascasibar (Astrophysikalisches Institut Potsdam)
XLI Rencontres de Moriond (La Thuile, 24 March 2006)