Dark matter signals from Draco and Willman 1: prospects for MAGIC II and CTA

摘要: The next generation of ground-based Imaging Air Cherenkov Telescopes will play an important role in indirect dark matter searches. In this article, we consider two particularly promising candidate sources for annihilation signals, the nearby dwarf galaxies Draco and Willman 1, study prospects detecting such a signal soon-operating MAGIC II telescope system as well planned installation CTA, taking special care describing experimental features that affect detectional prospects. For first time studies, fully take into account effect internal bremsstrahlung, which has recently been shown to considerably enhance, some cases, gamma-ray flux high energies domain where Atmospheric operate, thus leading significantly harder spectra than traditionally considered. While detection spectral introduced by bremsstrahlung would constitute smoking gun signature annihilation, find most models overall still remains at level be challenging detect, unless one adopts somewhat favorable descriptions smooth distribution dwarfs.