4 papers
Magnetic Structures in Gamma-Ray Burst Jets Probed by Gamma-Ray Polarization
Daisuke Yonetoku, Toshio Murakami, Shuichi Gunji +10
We report polarization measurements in two prompt emissions of gamma-ray bursts, GRB 110301A and GRB 110721A, observed with the Gamma-ray burst polarimeter (GAP) aboard IKAROS sola…
Strict Limit on CPT Violation from Polarization of Gamma-Ray Bursts
Kenji Toma, Shinji Mukohyama, Daisuke Yonetoku +9
We report the strictest observational verification of CPT invariance in the photon sector, as a result of gamma-ray polarization measurement of distant gamma-ray bursts (GRBs), whi…
Detection of Gamma-Ray Polarization in Prompt Emission of GRB 100826A
Daisuke Yonetoku, Toshio Murakami, Shuichi Gunji +10
We report the polarization measurement in prompt -ray emission of GRB 100826A with the Gamma-Ray Burst Polarimeter (GAP) aboard the small solar power sail demonstrator IKAROS. W…
Gamma-Ray Burst Polarimeter - GAP - aboard the Small Solar Power Sail Demonstrator IKAROS
D. Yonetoku, T. Murakami, S. Gunji +9
The small solar power sail demonstrator "IKAROS" is a Japanese engineering verification spacecraft launched by H-IIA rocket on May 21, 2010 at JAXA Tanegashima Space Center. IKAROS…