e-ASTROGAM mission: a major step forward for gamma-ray polarimetry

Vincent Tatischeff; Alessandro De Angelis; Christian Gouiffès; Lorraine Hanlon; Philippe Laurent; Grzegorz M. Madejski; Marco Tavani; Alexey Uliyanov; e-ASTROGAM Collaboration

doi:10.1117/1.JATIS.4.1.011003

28 November 2017 e-ASTROGAM mission: a major step forward for gamma-ray polarimetry

Vincent Tatischeff, Alessandro De Angelis, Christian Gouiffès, Lorraine Hanlon, Philippe Laurent, Grzegorz M. Madejski, Marco Tavani, Alexey Uliyanov, e-ASTROGAM Collaboration

Author Affiliations +

Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 4, Issue 1, 011003 (November 2017). https://doi.org/10.1117/1.JATIS.4.1.011003

Abstract

e-ASTROGAM is a gamma-ray space mission proposed for the fifth medium-size mission (M5) of the European Space Agency. It is dedicated to the study of the nonthermal universe in the photon energy range from ∼0.15 MeV to 3 GeV with unprecedented sensitivity and angular and energy resolution, together with a ground-breaking capability for gamma-ray polarimetric measurements over its entire bandwidth. We discuss here the main polarization results expected at low energies, between 150 keV and 5 MeV, using Compton interactions in the e-ASTROGAM instrument, from observations of active galactic nuclei, gamma-ray bursts, microquasars, and the Crab Pulsar and Nebula. The anticipated performance of the proposed observatory for polarimetry is illustrated by simulations of the polarization signals expected from various sources. We show that polarimetric analyses with e-ASTROGAM should provide definitive insight into the geometry, magnetization, and content of the high-energy plasmas found in the emitting sources, as well as on the processes of radiation of these plasmas.

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Vincent Tatischeff, Alessandro De Angelis, Christian Gouiffès, Lorraine Hanlon, Philippe Laurent, Grzegorz M. Madejski, Marco Tavani, Alexey Uliyanov, and e-ASTROGAM Collaboration "e-ASTROGAM mission: a major step forward for gamma-ray polarimetry," Journal of Astronomical Telescopes, Instruments, and Systems 4(1), 011003 (28 November 2017). https://doi.org/10.1117/1.JATIS.4.1.011003

Received: 22 June 2017; Accepted: 15 October 2017; Published: 28 November 2017

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