Gamma-ray Astrophysics in the MeV Range: the ASTROGAM Concept and Beyond

Abstract

The energy range between about 100 keV and 1 GeV is of interest for a vast class of astrophysical topics. In particular, (1) it is the missing ingredient for understanding extreme processes in the multi-messenger era; (2) it allows localizing cosmic-ray interactions with background material and radiation in the Universe, and spotting the reprocessing of these particles; (3) last but not least, gamma-ray emission lines trace the formation of elements in the Galaxy and beyond. In addition, studying the still largely unexplored MeV domain of astronomy would provide for a rich observatory science, including the study of compact objects, solar- and Earth-science, as well as fundamental physics. The technological development of silicon microstrip detectors makes it possible now to detect MeV photons in space with high efficiency and low background. During the last decade, a concept of detector ("ASTROGAM") has been proposed to fulfil these goals, based on a silicon hodoscope, a 3D position-sensitive calorimeter, and an anticoincidence detector. In this paper we stress the importance of a medium size (M-class) space mission, dubbed "ASTROMEV", to fulfil these objectives.

White Paper for the Voyage 2050 Program by ESA. Accepted for publication in "Experimental Astronomy". arXiv admin note: text overlap with arXiv:1711.01265

References in corpus (30)

• Multi-messenger Observations of a Binary Neutron Star Merger
• Secluded WIMP Dark Matter
• Giant Gamma-ray Bubbles from Fermi-LAT: AGN Activity or Bipolar Galactic Wind?
• Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger
• Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
• The spectrum of isotropic diffuse gamma-ray emission between 100 MeV and 820 GeV
• The WIMPless Miracle: Dark Matter Particles without Weak-scale Masses or Weak Interactions
• The Spectrum and Morphology of the Fermi Bubbles
• Asymmetries in core-collapse supernovae from maps of radioactive ${}^{44}$Ti in CassiopeiaA
• Current status of direct dark matter detection experiments
• Evidence for vacuum birefringence from the first optical polarimetry measurement of the isolated neutron star RX\, J1856.5$-$3754
• Dark Matter Evidence, Particle Physics Candidates and Detection Methods
• Polarization of the Crab pulsar and nebula as observed by the Integral/IBIS telescope
• Discovery of PSR J1227-4853: A transition from a low-mass X-ray binary to a redback millisecond pulsar
• The distribution of radioactive ${}^{44}$Ti in Cassiopeia A
• SCNN: An Accelerator for Compressed-sparse Convolutional Neural Networks
• Early 56Ni decay γ-rays from SN2014J suggest an unusual explosion
• INTEGRAL/IBIS nine-year Galactic Hard X-Ray Survey
• Mechanism for spectral break in cosmic ray proton spectrum from Supernova remnant W44
• SN2014J gamma-rays from the 56Ni decay chain
• GRB 140206A: the most distant polarized Gamma-Ray Burst
• Spectral and intensity variations of Galactic 26^Al emission
• The Anti-Coincidence Detector for the GLAST Large Area Telescope
• The Modular X- and Gamma-Ray Sensor (MXGS)of the ASIM Payload on the International Space Station
• Search for Dark Matter Produced in Association with a Higgs Boson Decaying to $b\bar{b}$ using 36 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS Detector
• The Supernova Remnant W44: confirmations and challenges for cosmic-ray acceleration
• 26Al kinematics: superbubbles following the spiral arms? Constraints from the statistics of star clusters and HI supershells
• Expectations for the Hard X-ray Continuum and Gamma-ray Line Fluxes from the Type Ia supernova SN 2014J in M82
• Measuring 26Al and 60Fe in the Galaxy
• Reconciling the diffuse Galactic gamma-ray and the cosmic ray spectra

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• Dark Matter in X-rays: Revised XMM-Newton Limits and New Constraints from eROSITA
• Development of the ComPair gamma-ray telescope prototype
• CubeSats for Gamma-Ray Astronomy
• Enhancing Direct Detection of Higgsino Dark Matter
• Compton Telescopes for Gamma-ray Astrophysics
• Telescope Concepts in Gamma-Ray Astronomy
• Anisotropic Photon and Electron Scattering without Ultrarelativistic Approximation
• Deriving Thermonuclear Supernova Properties from Gamma-Ray Line Measurements
• First operation of LArTPC in the stratosphere as an engineering GRAMS balloon flight (eGRAMS)
• Indirect detection of dark matter absorption in the Galactic Center
• On a possible origin of the gamma-ray excess around the Galactic Center
• Low-Energy Cosmic Rays and Associated MeV Gamma-Ray Emissions in the Protoplanetary System
• Search for MeV Gamma-ray emission from TeV bright red dwarfs with COMPTEL
• Contributions to $Z^0$ decays from a X17 extension of the Standard Model
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