Observation of optical transients with the ashra prototype

M. Sasaki, N. Manago, Y. Aita, Y. Asaoka, M. Jobashi, K. Noda, A. Okumura, Y. Ogawa, T. Chonan, Y. Watanabe, J. Learned, S. Matsuno, S. Olsen

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)


The All-sky Survey High Resolution Air shower detector (Ashra) is primarily designed to elucidate transient objects such as Gamma Ray Bursts (GRBs) not only detecting optical lights but also simultaneously very high energy γs and γs. A first run of data taking with prototype versions of the optical and the trigger systems took place in 2004-2005, allowing us to evaluate the performance of the systems and to approach an analysis strategy. The advancement of the Ashra optics has been demonstrated by our success of observing the position of GRB041211 from more than 1 hours before the burst for 2 hours continuously. We will present the results of our observations of optical transients with the Ashra prototype.

Original languageEnglish
Number of pages4
Publication statusPublished - 2005 Jan 1
Externally publishedYes
Event29th International Cosmic Ray Conference, ICRC 2005 - Pune, India
Duration: 2005 Aug 32005 Aug 10


Other29th International Cosmic Ray Conference, ICRC 2005

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


Dive into the research topics of 'Observation of optical transients with the ashra prototype'. Together they form a unique fingerprint.

Cite this