Probing the Galactic Diffuse Continuum Emission with COSI

被引：9

作者：

Karwin, Christopher M. ^{[1
]}

Siegert, Thomas ^{[2
]}

Beechert, Jacqueline ^{[3
]}

Tomsick, John A. ^{[3
]}

Porter, Troy A. ^{[4
,5
]}

Negro, Michela ^{[6
]}

Kierans, Carolyn ^{[1
]}

Ajello, Marco ^{[7
]}

Martinez-Castellanos, Israel ^{[1
,8
]}

Shih, Albert ^{[1
]}

Zoglauer, Andreas ^{[3
]}

Boggs, Steven E. ^{[9
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Julius Maximilians Univ Wurzburg, Inst Theoret Phys & Astrophys, Fak Phys & Astron, Lehrstuhl Astron, Emil Fischer Str 31, D-97074 Wurzburg, Germany

[3] Univ Calif Berkeley, UC Berkeley, Space Sci Lab, 7 Gauss Way, Berkeley, CA 94720 USA

[4] Stanford Univ, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA

[5] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA

[6] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[7] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA

[8] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[9] Univ Calif San Diego, Dept Astron & Astrophys, 9500 Gilman Dr, La Jolla, CA 92093 USA

来源：

ASTROPHYSICAL JOURNAL | 2023年 / 959卷 / 02期

关键词：

GAMMA-RAY EMISSION; HARD X-RAY; COSMIC-RAY; COMPTON SPECTROMETER; SPECTRUM; ELECTRONS; RADIATION; AL-26; FE-60; LINE;

D O I：

10.3847/1538-4357/ad04df

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In 2016, the Compton Spectrometer and Imager (COSI) had a successful 46 day flight on board NASA's Super Pressure Balloon platform. In this work, we report measurements of the Galactic diffuse continuum emission (GDCE) observed toward the inner Galaxy during the flight, which in the COSI energy band (0.2-5 MeV) is primarily generated from inverse Compton radiation. Within uncertainties, we find overall good agreement with previous measurements from INTEGRAL/SPI and COMPTEL. Based on these initial findings, we discuss the potential for further probing the GDCE with the 2016 COSI balloon data, as well as prospects for the upcoming satellite mission.

引用

页数：7

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