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Introducing the MeVCube concept: a CubeSat for MeV observations

Lucchetta, Giulio; Ackermann, Markus; Berge, David +1 more

Despite the impressive progress achieved both by X-ray and gamma-ray observatories in the last few decades, the energy range between ~ 200 keV and ~ 50 MeV remains poorly explored. COMPTEL, on-board the Compton Gamma-Ray Observatory (CGRO, 1991-2000), opened the MeV gamma-ray band as a new window to astronomy, performing the first all-sky survey i…

Diffuse x-ray and gamma-ray limits on boson stars that interact with nuclei

Acevedo, Javier F.; Bhoonah, Amit; Bramante, Joseph

Light bosonic dark matter can form gravitationally bound states known as boson stars. In this work, we explore a new signature of these objects interacting with the interstellar medium (ISM). We show how small effective couplings between the bosonic dark matter and the nucleon lead to a potential that accelerates ISM baryons as they transit the bo…