Assistant Professor Hiroki Yoneda (15th batch・Graduate school of Science) et al. published a paper online (Astronomy and Astrophysics)
【Authors】Hiroki Yoneda, Thomas Siegert and Saurabh Mittal
【Title】Imaging the positron annihilation line with 20 years of INTEGRAL/SPI observations
【Journal】Astronomy and Astrophysics
【Publication Date】24 October 2025
【Volume】702
【Article Number】A220
【Number of page(s)】18
