Nuclear-Astrophysics Lessons from INTEGRAL

Measurements of high-energy photons from cosmic sources of nuclear radiation through ESA's INTEGRAL mission have advanced our knowledge: New data with high spectral resolution showed that characteristic gamma-ray lines from radioactive decays occur throughout the Galaxy, in its interstellar medium and from sources. Although the number of detected sources and often the significance of the astrophysical results remain modest, conclusions derived from this unique astronomical window of radiation originating from nuclear processes are important, complementing the widely-employed atomic-line based spectroscopy. We review the results and insights obtained in the past decade from gamma-ray line measurements of cosmic sources, in the context of their astrophysical questions.

Note:

Invited review. 30 pages, 26 figures. This is an author-created, un-copyedited version of an article accepted for publication in Reports on Progress in Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at DOI 10.1088/0034-4885/76/2/026301

gamma ray
nucleus
radioactivity
resolution
spectral
photon
galaxy

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