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Cambridge University Press, Proceedings of the International Astronomical Union, S279(7), p. 387-388, 2011

DOI: 10.1017/s1743921312013476

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Study of very early phase GRB afterglows with MITSuME

Journal article published in 2011 by Yoshihiko Saito, Yoichi Yatsu, Hideya Nakajima, Nobuyuki Kawai, Katsuaki Asano, Yu Aoki, Mayumi Hayashi, Seongdeng Song, Kosuke Kawakami, Kazuki Tokoyoda, Takahiro Enomoto, Ryuichi Usui, Daisuke Kuroda, Kenshi Yanagisawa ORCID, Hiroyasu Shimizu and other authors.
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractWe review the results of very early phase optical follow-up observations of recent gamma-ray bursts (GRBs) with the multi-color optical telescopes “MITSuME”. The MITSuME telescopes were designed to perform “real time” and “automatic” follow-up observations prompted by the GCN alerts via the Internet. The rapidly slewing equatorial mounts allow MITSuME to start photometric observations within 100 seconds after the trigger for several GRBs. In particular, we detected a brightening just after the trigger for two GRBs. These phenomena could be interpreted as the “on-set” of afterglow. In this paper we summarize these optical observations with a brief interpretation.