Speaker
Dr
Ranjan Laha
(KIPAC, Stanford University and SLAC)
Description
ark matter decays or annihilations that produce line-like spectra may be smoking-gun signals. However, even such distinctive signatures can be mimicked by astrophysical or instrumental causes. We show that velocity spectroscopy-the measurement of energy shifts induced by relative motion of source and observer-can separate these three causes with minimal theoretical uncertainties. The principal obstacle has been energy resolution, but upcoming experiments will reach the required 0.1% level. We demonstrate this technique using existing telescopes.
Primary author
Dr
Ranjan Laha
(KIPAC, Stanford University and SLAC)