The six year results of Suzaku Wide-band All-Sky monitor
| Autor: | M. Ohno, Y. Hanabata, T. Uehara, T. Takahashi, M. Mizuno, Y. Fukazawa, K. Yamaoka, S. Sugita, N. Ohmori, M. Akiyama, M. Yamauchi, T. Yasuda, Y. Terada, W. Iwakiri, K. Takahara, M. Asahina, S. Kobayashi, M. Tashiro, M. Kokubun, Y. E. Nakagawa, Y. Urata, P. Tsai, C.-J. Chuang, K. Nakazawa, K. Makishima, T. Murakami, H. Tajima |
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| Rok vydání: | 2012 |
| Předmět: |
Physics
Astronomical Objects Solar flare Astrophysics::High Energy Astrophysical Phenomena media_common.quotation_subject Astrophysics::Instrumentation and Methods for Astrophysics Astronomy Astrophysics Occultation Particle acceleration Sky Astrophysics::Solar and Stellar Astrophysics Wide band Gamma-ray burst Spectroscopy media_common |
| Zdroj: | AIP Conference Proceedings. |
| ISSN: | 0094-243X |
| DOI: | 10.1063/1.3696160 |
| Popis: | All-sky observations from hard X-ray to soft gamma-ray band is very important to study non-thermal processes for many bright astronomical objects such as Gamma-ray Bursts (GRBs), soft gamma-ray repeaters (SGRs), and solar flares. The Wide-band All-sky Monitor (WAM) onboard Suzaku enables unique observations utilizing its wide energy coverage between 50 keV to 5000 keV with very large effective area of 400 cm2 even at 1 MeV. After six year observations, the WAM has detected more than 850 GRBs. Thanks to its largest effective area above 300 keV among all all-sky instruments, many data with good photon statistics is available even for both timeresolved spectroscopy and short duration GRBs and some implications for emission mechanism and physical condition of emission region of GRBs have been suggested. The WAM also observed many solar flares and SGRs. We summarized the observational results from 105 solar flares and their characteristics and addressed discussion on particle acceleration and heating process in solar flares. In addition to above transient objects, many bright gamma-ray sources such as Crab, Cyg X-1, GRB 1915-105, and NGC 4541 are monitored by the WAM using earth occultation technique. |
| Databáze: | OpenAIRE |
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