3 papers
astro-ph.HE2024
Possible X-ray Cocoon Emission from GRB 050709
Naoki Ogino, Makoto Arimoto, Hamid Hamidani +6
The detection of the short gamma-ray burst (SGRB) 050709 by the HETE-2 satellite opened a new window into understanding the nature of SGRBs, offering clues about their emission mec…
astro-ph.IM2024
High-speed Readout System of X-ray CMOS Image Sensor for Time Domain Astronomy
Naoki Ogino, Makoto Arimoto, Tatsuya Sawano +6
We developed an FPGA-based high-speed readout system for a complementary metal-oxide-semiconductor (CMOS) image sensor to observe soft X-ray transients in future satellite missions…
astro-ph.HE2024
Peak energy--Isotropic Luminosity Correlation and Jet Opening Angle Evolution in Swift-BAT Short GRBs with Soft Tail Emission
Naoki Ogino, Daisuke Yonetoku, Makoto Arimoto +2
Some short gamma-ray bursts (SGRBs) exhibit a short duration and spectral hard emission (referred to as a "hard spike") followed by a slightly longer soft emission (known as a "sof…