MITSuME telescope observation of GRB080506

M. Arimoto, Y. A. Mori, N. Kawai, M. Yoshida, K. Ohta

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

1 Citation (Scopus)

Abstract

We report the multicolor early afterglow observation of a 200 s-long GRB080506 with the 50 cm MITSuME Telescopes at Akeno and Okayama, Japan. We started observations of the afterglow at 117 s after the trigger at Akeno when the prompt emission was still ongoing, and 253 s after the trigger at Okayama. We find no counterpart for the X-ray flare in the optical light curve, implying that the X-ray and optical emission in the early afterglow have different origins. We also found a temporal break at about 1000 s in the optical light curve, which we interpret as the passing of the spectral peak at vm and derive constraints on the physical parameters based on the synchrotron shock model. The SED in the optical band suggests a significant absorption in the host galaxy, well fitted with the LMC dust model with E(B - V) ∼ 0.2 and redshift z ∼ 2.2.

Original languageEnglish
Title of host publicationGamma-Ray Burst - 6th Huntsville Symposium
Pages232-234
Number of pages3
Volume1133
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event6th Huntsville Symposium on Gamma-Ray Bursts - Huntsville, AL
Duration: 2008 Oct 202008 Oct 23

Other

Other6th Huntsville Symposium on Gamma-Ray Bursts
CityHuntsville, AL
Period08/10/2008/10/23

Keywords

  • Afterglow
  • Grb080506
  • Optical
  • Peak frequency
  • X-ray

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Arimoto, M., Mori, Y. A., Kawai, N., Yoshida, M., & Ohta, K. (2009). MITSuME telescope observation of GRB080506. In Gamma-Ray Burst - 6th Huntsville Symposium (Vol. 1133, pp. 232-234) https://doi.org/10.1063/1.3155888