The Compton Spectrometer and Imager
Abstract
The Compton Spectrometer and Imager (COSI) is a NASA Small Explorer (SMEX) satellite mission in development with a planned launch in 2027. COSI is a wide-field gamma-ray telescope designed to survey the entire sky at 0.2-5 MeV. It provides imaging, spectroscopy, and polarimetry of astrophysical sources, and its germanium detectors provide excellent energy resolution for emission line measurements. Science goals for COSI include studies of 0.511 MeV emission from antimatter annihilation in the Galaxy, mapping radioactive elements from nucleosynthesis, determining emission mechanisms and source geometries with polarization measurements, and detecting and localizing multimessenger sources. The instantaneous field of view for the germanium detectors is >25% of the sky, and they are surrounded on the sides and bottom by active shields, providing background rejection as well as allowing for detection of gamma-ray bursts and other gamma-ray flares over most of the sky. In the following, we provide an overview of the COSI mission, including the science, the technical design, and the project status.
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@article{arxiv.2308.12362,
title = {The Compton Spectrometer and Imager},
author = {John A. Tomsick and Steven E. Boggs and Andreas Zoglauer and Dieter Hartmann and Marco Ajello and Eric Burns and Chris Fryer and Chris Karwin and Carolyn Kierans and Alexander Lowell and Julien Malzac and Jarred Roberts and Pascal Saint-Hilaire and Albert Shih and Thomas Siegert and Clio Sleator and Tadayuki Takahashi and Fabrizio Tavecchio and Eric Wulf and Jacqueline Beechert and Hannah Gulick and Alyson Joens and Hadar Lazar and Eliza Neights and Juan Carlos Martinez Oliveros and Shigeki Matsumoto and Tom Melia and Hiroki Yoneda and Mark Amman and Dhruv Bal and Peter von Ballmoos and Hugh Bates and Markus Böttcher and Andrea Bulgarelli and Elisabetta Cavazzuti and Hsiang-Kuang Chang and Claire Chen and Che-Yen Chu and Alex Ciabattoni and Luigi Costamante and Lente Dreyer and Valentina Fioretti and Francesco Fenu and Savitri Gallego and Giancarlo Ghirlanda and Eric Grove and Chien-You Huang and Pierre Jean and Nikita Khatiya and Jürgen Knödlseder and Martin Krause and Mark Leising and Tiffany R. Lewis and Jan Peter Lommler and Lea Marcotulli and Israel Martinez-Castellanos and Saurabh Mittal and Michela Negro and Samer Al Nussirat and Kazuhiro Nakazawa and Uwe Oberlack and David Palmore and Gabriele Panebianco and Nicolo Parmiggiani and Tyler Parsotan and Sean N. Pike and Field Rogers and Hester Schutte and Yong Sheng and Alan P. Smale and Jacob Smith and Aaron Trigg and Tonia Venters and Yu Watanabe and Haocheng Zhang},
journal= {arXiv preprint arXiv:2308.12362},
year = {2023}
}
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8 pages