2001 Fiscal Year Final Research Report Summary
High-Speed Ha Canera for Solar Flare Observation
| Project/Area Number |
12640244
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory |
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Principal Investigator |
HANSOKA Yoichro National Astronomical Observatory Division of Radio Astronomy, Assistamt Professor, 電波天文学研究系, 助教授 (10238040)
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| Co-Investigator(Kenkyū-buntansha) |
KITAI Reizaburo Kyoto University,Faculty of Science,Assistant Professor, 理学部, 助教授 (40169850)
ICHIMOTO Kiyoshi National Astronomical Observatory Division of Solar Phsics,Assistant Professor, 太陽物理学研究系, 助教授 (70193456)
SAKURAI Takashi National Astronomical Observatory Division of Solar Phsics,Professor, 太陽物理学研究系, 教授 (40114491)
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| Project Period (FY) |
2000 – 2001
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| Keywords | Solar flares / Real-time image processing / Ha imaging observation |
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| Research Abstract |
We have developed a new digital imaging system for the Ha imager of the Flare Telescope at Mitaka, NAOJ, for high-cadence observations of solar flares. It covers a 6.4x4.9 arcmin field of view with 660x494 pixels, and the time resolution is 1/30 sec at best (it depends on the field of view). To resolve individual spikes (elementary bursts) of impulsive solar flares requires a time resolution within 1 sec and a spatial resolution of about 1 arcsec. Although it is difficult to realize such high temporal and high spatial resolutions simultaneously with the hard X-ray instruments, even a small Ha telescope shows us a rapid change of the flare kernel with one arcsec resolution. The problem in the high-cadence Ha observations has been the handling of huge amount of data produced by such a type of observations, but the recent advance of the computer technology enables us to handle vast data with a small computer. We started the regular observation with this system in July 2001, and we have had a collaboration with Yohkoh for half a year. After the HESSI's launch, we hope to collaborate with the HESSI to observe energetic phenomena of solar flares.
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