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Imaging and Spectral Fitting of Bright Gamma-Ray Sources with the COSI Balloon Payload

  • Authors: Jarred M. Roberts, Steven Boggs, Thomas Siegert, John A. Tomsick, Marco Ajello, Peter von Ballmoos, Jacqueline Beechert, Floriane Cangemi, Savitri Gallego, Pierre Jean, Chris Karwin, Carolyn Kierans, Hadar Lazar, Alex Lowell, Israel Martinez Castellanos, Sean Pike, Clio Sleator, Yong Sheng, Hiroki Yoneda, Andreas Zoglauer

Jarred M. Roberts et al 2025 The Astrophysical Journal 979 .

  • Provider: AAS Journals

Caption: Figure 5.

Exposure maps of the three sources during the 2016 balloon flight. The cyan letters C, X, and A represent the known source locations of Crab, Cyg X-1, and Cen A, respectively. The black contours represent the different thresholds of exposure, and the red contour represents the minimum exposure limit for pixels to be included in the RL image. The color map shows the instrument exposure in units of 108 s cm2 sr−1.

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