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Thermal and Nonthermal Flare Emission Observed with the Nobeyama Radio Heliograph

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Fragmented Energy Release in Sun and Stars

Abstract

The early phases of three flares, observed by the Nobeyama Radio Heliograph, are studied. Nonthermal and thermal radio sources are identified by comparison with soft X-ray images taken by the Soft X-ray Telescope onboard the Yohkoh satellite. Two of the flares are mainly of nonthermal origin and their location coincides with one of the foot points of soft X-ray loops. Another flare has both thermal and nonthermal components which start to brighten simultaneously. This suggests that particle acceleration and plasma compression develop simultaneously.

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References

  • Acton, L.W., Feldman, U., Bruner, M.E. Doschek, G.A., Hirayama, T., Hudson, H.S., Lernen, J.R., Ogawara, Y., Strong, K.T., and Tsuneta, S.: 1992, P.A.S.J., 44, L71

    ADS  Google Scholar 

  • Bulk, A.D.: 1988, Ann.Rev.Astron.Astrophys., 23, 169

    Google Scholar 

  • Enome, S. Nakajima, H., Shibasaki, K., Nishio, M., Takano, T., Hanaoka, Y., Torii, C., Sekiguchi, H., Bushimata, T., Kawashima, S., Shinohara, N., Irimajiri, Y., Koshiishi, H., Kosugi, T., Shiomi, Y., Sawa, M., and Kai, K.:1993, ASP Conference Series, 46, 310

    ADS  Google Scholar 

  • Feldman, U., Doschek, G.A., and Kreplin, R.W.: 1980, Astrophy. J., 23, 365

    Article  ADS  Google Scholar 

  • Kosugi, T., Makishima, K., Murakami, T., Sakao, T., Dotani, T., Inda, M., Kai, K., Masuda, S., Nakajima, H., Ogawara, Y., Sawa, M., and Shibasaki, K.: 1991, Sol. Phys., 136, 17

    Article  ADS  Google Scholar 

  • Nakajima, H., Enome, S., Shibasaki, K., Nishio, M., Takano, T., Hanaoka, Y., Torii, C., Sekiguchi, H., Bushimata, T., Kawashima, S., Shinohara, N., Irimajiri, Y., Koshiishi, H., Kosugi, T., Shiomi, Y., Sawa, M., and Kai, K.:1994, in proceedings of IEEE, Design and Instrumentation of Antennas for Deep Space Telecommunications and Radioastronomy

    Google Scholar 

  • Nishio, M., Nakajima, H., Enome, S., Shibasaki, Takano, T., Hanaoka, Y., Torii, C., Sekiguchi, H., Bushimata, T., Kawashima, S., Shinohara, N., Irimajiri, Choi, Y.S., Y., Koshiishi, H., Shiomi, Y., Metcalf T., and Canfield R.C.: 1994, P.A.S.J. Letter, 46

    Google Scholar 

  • Takano, T. et al.: to be submitted

    Google Scholar 

  • Tsuneta, S., Acton, L., Bruner, M., Lernen, J., Brown, W., Caravalho, R., Catura, R., Freeland, S., Jurcevich, B., Morrison, M., Ogawara, Y., Hirayama, T., and Owens, J.: 1991, Sol. Phys., 136, 37

    Article  ADS  Google Scholar 

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© 1994 Springer Science+Business Media Dordrecht

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Shibasaki, K. et al. (1994). Thermal and Nonthermal Flare Emission Observed with the Nobeyama Radio Heliograph. In: Van den Oord, G.H.J. (eds) Fragmented Energy Release in Sun and Stars. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1014-3_30

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  • DOI: https://doi.org/10.1007/978-94-011-1014-3_30

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-4441-7

  • Online ISBN: 978-94-011-1014-3

  • eBook Packages: Springer Book Archive

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