eASTROGAM

e-ASTROGAM (enhanced ASTROGAM) is a breakthrough observatory space mission proposal to ESA M5 (medium-size) call, with a detector composed by a Silicon tracker, a calorimeter, and an anticoincidence system, dedicated to the study of the non-thermal Universe in the photon energy range from 0.3 MeV to 3 GeV. The mission is based on an advanced space-proven detector technology, with unprecedented sensitivity, angular and energy resolution, combined with polarimetry capability.

The e-ASTROGAM instrumentation is optimized for the simultaneous detection of Compton and pair-producing gamma-ray events over a large spectral band. It is based on a very high technology readiness level for all subsystems and includes many innovative features for the detectors and associated electronics. Thanks to its performance in the MeV-GeV domain, substantially improving its predecessors, e-ASTROGAM will open a new window on the non-thermal Universe, making pioneering observations of the most powerful Galactic and extragalactic sources, elucidating the nature of their relativistic outflows and their effects on the surroundings. With line sensitivity in the MeV energy range one to two orders of magnitude better than previous generation instruments, e-ASTROGAM will determine the origin of key isotopes fundamental for the understanding of supernova explosions and the chemical evolution of our Galaxy.
The e-ASTROGAM satellite.
e-ASTROGAM will be ideal for the study of high-energy sources in general, including pulsars and pulsar wind nebulae, accreting neutron stars and black holes, novae, supernova remnants and magnetars. The mission will provide unique data of significant interest to a broad astronomical community, complementary to other powerful observatories.

Aim of our participation

The Institute of Space Sciences is interested in the development, testing and calibration of the Si-strip detectors of the eASTROGAM tracker, in addition to simulations of the performance of the whole Compton-Pair instrument. Si-strip detectors are similar to the CdTe detectors being developed and tested in the Radiation Laboratory.
Overview of the e-ASTROGAM payload showing the silicon Tracker, the Calorimeter and the Anticoincidence system.
In the sensitivity plot below, the e-ASTROGAM sensitivity is calculated at 3 sigma for an effective exposure of 1 year and for a source at high Galactic latitude. The curves for INTEGRAL/JEM-X, IBIS (ISGRI and PICsIT), and SPI are for an effective observation time of 1 Ms, CGRO/COMPTEL and EGRET for 9 years of mission duration, Fermi/LAT for a high Galactic latitude source in 10 years in survey mode, MAGIC, VERITAS (similar for HESS.) and CTA, 50 hours, HAWC 5 yr, LHAASO 1 yr and HiSCORE 1000 h.

Recent Publications

The e-ASTROGAM gamma-ray space mission
Tatischeff, V.; Tavani, M.; von Ballmoos, et al. including Hernanz, M. and Isern, J.,
Proceedings of the SPIE, Volume 9905, id. 99052N 11 pp. (2016).

Hard-X and gamma-ray imaging detector for astrophysics based on pixelated CdTe semiconductors
Gálvez, J.L.; Hernanz, M.; Alvarez, L.; Artigues, B.; Ullán, M.; Lozano, M.; Pellegrini, G.; Cabruja, E.; Martínez, R.; Chmeissani, M.; Puigdengoles, C.
Journal of Instrumentation, Volume 11, Issue 01, article id. C01011 (2016)

Development of a pixelated CdTe detector module for a hard-x and gamma-ray imaging spectrometer application
Gálvez, J.L.; Hernanz, M.; Alvarez, L.; Artigues, B.; Alvarez, J.M.; Ullán, M.; Lozano, M.; Pellegrini, G.; Cabruja, E.; Martínez, R.; Chmeissani, M.; Puigdengoles, C.
Proceedings of the SPIE, Volume 9905, id. 99054B 13 pp. (2016)

Senior Institute members involved

M. Hernanz, J. Isern, A. Serenelli D. F. Torres, N. Rea, E. de Oña
Point source continuum differential sensitivity of different X- and gamma-ray instruments.
Institute of Space Sciences (IEEC-CSIC)

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An institute of the Consejo Superior de Investigaciones Científicas

An institute of the Consejo Superior de Investigaciones Científicas
Affiliated with the Institut d'Estudis Espacials de Catalunya

Affiliated with the Institut d'Estudis Espacials de Catalunya