Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1279..227m&link_type=abstract
DECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS. AIP Conference Proceedings, Volume 1279, pp. 227-230 (2010).
Astronomy and Astrophysics
Astronomy
2
Gamma-Ray Sources (Astronomical), Polarimeters, Synchrotron Radiation, Satellites, Artificial, Gamma-Ray Sources, Gamma-Ray Bursts, Photometric, Polarimetric, And Spectroscopic Instrumentation, Synchrotron Radiation, Artificial Earth Satellites
Scientific paper
A GRB polarimeter was launched by H-IIA on 21 May in 2010 at JAXA Tanegashima Space Center. A GRB polarization is the best key to understand mechanism of GRB prompt emissions and also to understand the geometry of magnetic fields. The standard GRB fireball models predict the synchrotron radiation of them, thus a high degree of polarization is expected, if the magnetic field-lines are coaligned. Previously, a few of the GRB polarization detections were reported. Although they used the Compton scattering method, but their measurements were non-coincidence mode. This made their reports were somewhat unclear. This time, our detector works fully in the coincidence mode to avoid the confusion. On 21 June, GAP is switched on and the first GRB was detected on 7 July but not yet well calibrated.
Gunji Shuichi
Kikuchi Yoshiko
Mihara Tatehiro
Morihara Yoshiyuki
Murakami Tadayoshi
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