Astronomy & Astrophysics (A&A)

Vol. 665
15. Numerical strategies and codes

COMPTEL knowledge evaluation utilizing GammaLib and ctools

by J. Knödlseder, W. Collmar, M. Jarry, M. McConnell. 2022, A&A, 665, A84

Astrophysics is concentrated on gathering new and higher knowledge. Nevertheless, archival knowledge are all the time a mine for unexplored discoveries or comparisons with present knowledge. Archival knowledge characterize our reminiscence. Alongside these traces, the hassle by Knödlseder and collaborators is laudable: the information from the COMPTEL instrument (0.75–30 MeV), which flew greater than 20 years in the past on NASA’s Compton Gamma-Ray Observatory mission, may prior to now solely be analyzed with proprietary software program. Utilizing open-source (Python-based) software program for gamma-ray astronomy, they convey these knowledge again to life. The reborn knowledge might be very helpful for the just lately authorised NASA small mission Compton Spectrometer and Imager (COSI), which is able to function within the 0.2-5 MeV power vary.