Warm Dark Matter Sterile Neutrinos in Electron Capture and Beta Decay Spectra

Figure 2

Calorimeter spectrum after electron capture in (light curves) and in (black curves) with emission of a light neutrino, (solid curves) and a heavy neutrino, 40 keV (dashed curves). (a) Full spectrum, showing L and M capture peak labels. (b) Low energy region ( keV), showing N and O capture peak labels.

(a)

(b)