3 papers
astro-ph.HE2026
First results on the search for the Galactic Center Excess in the sub-GeV band with the emulsion telescope in GRAINE 2023
Yuya Nakamura, Shigeki Aoki, Takashi Azuma +34
Please check the paper for full abstract. The Galactic Center Excess (GCE) is an unexplained excess of gamma-ray emission from the Galactic Center. The GRAINE experiment aims to re…
astro-ph.IM2026
First overnight balloon flight of the GRAINE 2023 emulsion gamma-ray telescope enabled by a large-scale pressure-vessel gondola
Hiroki Rokujo, Shigeki Aoki, Takashi Azuma +34
The Gamma-Ray Astro Imager with Nuclear Emulsion (GRAINE) project conducts precision observations of sub-GeV--GeV cosmic gamma rays using a balloon-borne nuclear-emulsion telescope…
astro-ph.IM2024
New high-precision measurement system for electron-positron pairs from sub-GeV/GeV gamma-rays in the emulsion telescope
Yuya Nakamura, Shigeki Aoki, Tomohiro Hayakawa +27
The GRAINE project observes cosmic gamma-rays, using a balloon-borne emulsion-film-based telescope in the sub-GeV/GeV energy band. We reported in our previous balloon experiment in…