Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1279..355k&link_type=abstract
DECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS. AIP Conference Proceedings, Volume 1279, pp. 355-356 (2010).
Astronomy and Astrophysics
Astronomy
Polarimetry, Gamma-Ray Sources (Astronomical), Astronomical Observatories, Polarimetry, Gamma-Ray Sources, Gamma-Ray Bursts, Observatories And Site Testing
Scientific paper
We have developed an optical wide-field polarimeter, HOWPol, which employs a wedged double Wollaston prism and enables us to derive linear polarization (i.e., Stokes Q/I and U/I) from only a single exposure. We successfully performed observation for the afterglow of GRB 091208B. Its first exposure started ~150 seconds after the gamma-ray trigger. Our preliminary result suggests that the early afterglow was significantly polarized, larger than a few percent.
Arai Akira
Chiyonobu Shingo
Fukazawa Yashushi
Hiragi Kazuyoshi
Ikejiri Yuki
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