187 citations · 784 across the 23 of their papers we have counts for
6 papers · 1 filter
High-energy extension of the gamma-ray band observable with an electron-tracking Compton camera
Tomohiko Oka, Shingo Ogio, Mitsuru Abe +12
Although the MeV gamma-ray band is a promising energy-band window in astrophysics, the current situation of MeV gamma-ray astronomy significantly lags behind those of the other ene…
First observation of MeV gamma-ray universe with bijective imaging spectroscopy using the Electron-Tracking Compton Telescope aboard SMILE-2+
Atsushi Takada, Taito Takemura, Kei Yoshikawa +12
MeV gamma-rays provide a unique window for the direct measurement of line emissions from radioisotopes, but observations have made little significant progress after COMPTEL/{\it CG…
Exponentially Decaying Extended Emissions Following Short Gamma-Ray Bursts with Possible Luminosity -- E-folding Time Correlation
Yasuaki Kagawa, Daisuke Yonetoku, Tatsuya Sawano +3
The origin of extended emissions following prompt emissions of short gamma-ray bursts (SGRBs) is in mystery. The long-term activity of the extended emission is responsible for prom…
Systematic study for gas-to-dust ratio of short gamma-ray burst afterglows
Kazuki Yoshida, Daisuke Yonetoku, Makoto Arimoto +2
Extra-galactic X-ray absorption and optical extinction are often found in gamma-ray burst (GRB) afterglows and they could be tracers of both circumburst and host galaxy environment…
X-raying extended emission and rapid decay of short gamma-ray bursts
Yasuaki Kagawa, Daisuke Yonetoku, Tatsuya Sawano +5
Extended emission is a mystery in short gamma-ray bursts (SGRBs). By making time resolved spectral analyses of brightest nine events observed by XRT, we obviously cla…
Short Gamma Ray Burst Formation Rate from BATSE data using E_p-L_p correlation and the minimum gravitational wave event rate of coalescing compact binary
Daisuke Yonetoku, Takashi Nakamura, Tatsuya Sawano +2
Using 72 Short Gamma Ray Bursts (SGRBs) with well determined spectral data observed by BATSE, we determine their redshift and the luminosity by applying -- correlation fo…