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arXiv · 2308.12362

The Compton Spectrometer and Imager

John A. Tomsick·Steven E. Boggs·Andreas Zoglauer·Dieter Hartmann·Marco Ajello·Eric Burns·Chris Fryer·Chris Karwin·Carolyn Kierans·Alexander Lowell·Julien Malzac·Jarred Roberts·Pascal Saint-Hilaire·Albert Shih·Thomas Siegert·Clio Sleator·Tadayuki Takahashi·Fabrizio Tavecchio·Eric Wulf·Jacqueline Beechert·Hannah Gulick·Alyson Joens·Hadar Lazar·Eliza Neights·Juan Carlos Martinez Oliveros·Shigeki Matsumoto·Tom Melia·Hiroki Yoneda·Mark Amman·Dhruv Bal·Peter von Ballmoos·Hugh Bates·Markus Böttcher·Andrea Bulgarelli·Elisabetta Cavazzuti·Hsiang-Kuang Chang·Claire Chen·Che-Yen Chu·Alex Ciabattoni·Luigi Costamante·Lente Dreyer·Valentina Fioretti·Francesco Fenu·Savitri Gallego·Giancarlo Ghirlanda·Eric Grove·Chien-You Huang·Pierre Jean·Nikita Khatiya·Jürgen Knödlseder·Martin Krause·Mark Leising·Tiffany R. Lewis·Jan Peter Lommler·Lea Marcotulli·Israel Martinez-Castellanos·Saurabh Mittal·Michela Negro·Samer Al Nussirat·Kazuhiro Nakazawa·Uwe Oberlack·David Palmore·Gabriele Panebianco·Nicolo Parmiggiani·Tyler Parsotan·Sean N. Pike·Field Rogers·Hester Schutte·Yong Sheng·Alan P. Smale·Jacob Smith·Aaron Trigg·Tonia Venters·Yu Watanabe·Haocheng Zhang
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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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John A. Tomsick, Steven E. Boggs, Andreas Zoglauer, Dieter Hartmann, Marco Ajello, Eric Burns, Chris Fryer, Chris Karwin, Carolyn Kierans, Alexander Lowell, Julien Malzac, Jarred Roberts, Pascal Saint-Hilaire, Albert Shih, Thomas Siegert, Clio Sleator, Tadayuki Takahashi, Fabrizio Tavecchio, Eric Wulf, Jacqueline Beechert, Hannah Gulick, Alyson Joens, Hadar Lazar, Eliza Neights, Juan Carlos Martinez Oliveros, Shigeki Matsumoto, Tom Melia, Hiroki Yoneda, Mark Amman, Dhruv Bal, Peter von Ballmoos, Hugh Bates, Markus Böttcher, Andrea Bulgarelli, Elisabetta Cavazzuti, Hsiang-Kuang Chang, Claire Chen, Che-Yen Chu, Alex Ciabattoni, Luigi Costamante, Lente Dreyer, Valentina Fioretti, Francesco Fenu, Savitri Gallego, Giancarlo Ghirlanda, Eric Grove, Chien-You Huang, Pierre Jean, Nikita Khatiya, Jürgen Knödlseder, Martin Krause, Mark Leising, Tiffany R. Lewis, Jan Peter Lommler, Lea Marcotulli, Israel Martinez-Castellanos, Saurabh Mittal, Michela Negro, Samer Al Nussirat, Kazuhiro Nakazawa, Uwe Oberlack, David Palmore, Gabriele Panebianco, Nicolo Parmiggiani, Tyler Parsotan, Sean N. Pike, Field Rogers, Hester Schutte, Yong Sheng, Alan P. Smale, Jacob Smith, Aaron Trigg, Tonia Venters, Yu Watanabe, Haocheng Zhang. 2023-08-23. The Compton Spectrometer and Imager. https://arxiv.org/abs/2308.12362

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