Rapidly-responding optical polarimetry of GRB afterglows with Hiroshima 1.5-m telescope and one-shot wide-field polarimeter

K. S. Kawabata, T. Uehara, M. Yamanaka, M. Sasada, Y. Ikejiri, R. Itoh, T. Komatsu, M. Uemura, O. Nagae, S. Chiyonobu, H. Tanaka, T. Ohsugi, Y. Fukazawa, T. Mizuno, H. Katagiri, H. Takahashi, H. Miyamoto, K. Sakimoto, K. Hiragi, M. YoshidaR. Yamazaki, K. Toma, A. Arai, M. Isogai, H. Nakaya, Y. Kamata, S. Miyazaki, T. Yamashita, M. Suzuki, S. Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationDeciphering the Ancient Universe with Gamma-Ray Bursts
Pages355-356
Number of pages2
DOIs
Publication statusPublished - 2010 Dec 13
Externally publishedYes
EventInternational Symposium "Deciphering the Ancient Universe with Gamma-Ray Bursts" - Kyoto, Japan
Duration: 2010 Apr 192010 Apr 23

Publication series

NameAIP Conference Proceedings
Volume1279
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Symposium "Deciphering the Ancient Universe with Gamma-Ray Bursts"
CountryJapan
CityKyoto
Period10/4/1910/4/23

Keywords

  • GRB
  • Polarization

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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