3 papers
astro-ph.HE2026
Observation of Galactic center in the sub-MeV gamma-ray band with electron-tracking Compton camera
Tomonori Ikeda, Toru Tanimori, Atsushi Takada +6
We report the direct detection of gamma-ray emission from the Galactic center in the 150-600 keV band using the electron-tracking Compton camera (ETCC), which has a wide field of v…
physics.ins-det2026
Three-dimensional recoil-electron reconstruction using combined optical imaging and waveform readout for electron-tracking Compton cameras
Tomonori Ikeda, Tatsuya Sawano, Naomi Tsuji +1
Accurate reconstruction of recoil-electron directions is critical for enhancing the point-spread function of electron-tracking Compton cameras (ETCCs) in gamma-ray imaging. Althoug…
astro-ph.IM2025
Systematic Biases from ARM-Based Sensitivity and Imaging in Compton Cameras
Tomonori Ikeda, Tatsuya Sawano, Naomi Tsuji +1
The angular resolution measure (ARM) is widely used in Compton camera analyses to characterize angular uncertainty and to define event selection criteria. However, the ARM distribu…