newASTROGAM – The New MeV to GeV Gamma-ray Observatory

newASTROGAM is a breakthrough mission concept for the study
of the non-thermal Universe from space with gamma rays in the energy
range from 15 keV to 3 GeV. It is based on advanced space-proven
detector technologies, which will achieve unprecedented sensitivity,
angular and energy resolution combined with polarimetric
capability. Since the MeV gamma-ray energy range is the most
under-explored electromagnetic window to the Universe, a mission in
this energy range can for the first time sensitively address
fundamental astrophysics questions connected to the physics of
compact objects and merger events, jets and their environments,
supernovae and the origin of the elements, potentially constrain the
nature of dark matter and many more science objectives. The mission
will detect and follow-up many of the key sources of multi-messenger
astronomy in the 2040s.

newASTROGAM provides an unprecedentedly broad energy coverage from
keV to GeV energies. They payload concept consists of a Silicon
tracker combined with a crystal calorimeter. Both detectors are
surrounded by an anti-coincidence detector to reject charged cosmic
rays. ... mehrIn addition, a thin X-ray coded mask provides very good
imaging capabilities. Such a mission can uniquely detect gamma rays
via the photoelectric effect, Compton scattering and
electron-positron pair production. newASTROGAM is
proposed to the ESA call for medium-class mission ideas (M8).