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Search for primordial black hole dark matter with x-ray spectroscopic and imaging satellite experiments and prospects for future satellite missions

Santangelo, Andrea; Malyshev, Denys; Moulin, Emmanuel

Ultralight primordial black holes (PBHs) in the mass range of 10¹⁶- 10²² g are allowed by current observations to constitute a significant fraction, if not all, of the dark matter in the Universe. In this work, we present limits on ultralight, nonrotating PBHs which arise from the nondetection of the Hawking radiation signals…