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Imaging the positron annihilation line with 20 years of INTEGRAL/SPI observations

Hiroki Yoneda, Thomas Siegert and Saurabh Mittal

A&A, 702 (2025) A220

Published online: 24 October 2025

DOI: 10.1051/0004-6361/202555895

Hiroki Yoneda

Thomas Siegert

Saurabh Mittal

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