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The Coalescence Instability in Solar Flares

Published online by Cambridge University Press:  04 August 2017

T. Tajima ,
F. Brunel ,
J.-I. Sakai ,
L. Vlahos  and
M. R. Kundu
T. Tajima
Affiliation:
University of Texas
F. Brunel
Affiliation:
University of Texas
J.-I. Sakai
Affiliation:
Toyama University and University of Maryland
L. Vlahos
Affiliation:
University of Maryland
M. R. Kundu
Affiliation:
University of Maryland

Abstract

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The non-linear coalescence instability of current carrying solar loops can explain many of the characteristics of the solar flares such as their impulsive nature, heating and high energy particle acceleration, amplitude oscillations of electromagnetic and emission as well as the characteristics of 2–D microwave images obtained during a flare. The plasma compressibility leads to the explosive phase of loop coalescence and its overshoot results in amplitude oscillations in temperatures by adiabatic compression and decompression. We note that the presence of strong electric fields and super–Alfvenic flows during the course of the instability play an important role in the production of non–thermal particles. A qualitative explanation on the physical processes taking place during the non–linear stages of the instability is given.

Type
Session III
Information
Symposium - International Astronomical Union , Volume 107: Unstable Current Systems and Plasma Instabilities , 1985 , pp. 197 - 210
Copyright
Copyright © Reidel 1985 

References

Bhattacharjee, A., Brunel, F. and Tajima, T.: 1983, IFSR #93, The University of Texas, Austin.Google Scholar
Brown, J.C., Melrose, D.B. and Spicer, D.S.: 1979, Ap. J., 228, 592.CrossRefGoogle Scholar
Brunel, F., Leboeuf, J.N., Tajima, T., Dawson, J.M., Makino, M. and Kamimura, T.: 1981, J. Comput. Phys. 43, 268.CrossRefGoogle Scholar
Brunel, F., Tajima, T. and Dawson, J.M.: 1982, Phys. Rev. Lett., 49, 323.CrossRefGoogle Scholar
Chupp, E.L., Forrest, D.J. and Suri, A.N.: 1974, in Solar Gamma-, X-, and EUV Radiation (edited by Kane, S.) (Reidel, Holland) p. 341.Google Scholar
Duijveman, A.P., Hoyng, P. and Machado, M.E.: 1982, Solar Physics, 81, 137.CrossRefGoogle Scholar
Forrest, D.J., Chupp, E.L., Rayan, J.M., Reppin, C., Rieger, E., Kanbach, G., Pinkau, K., Share, G., and Kinzer, G.: 1981, to be published in the Late Volumes of the 17th International Cosmic Ray Conference; Paris, France.Google Scholar
Furth, H.P., Killeen, J. and Rosenbluth, M.N.: 1963, Phys. Fluids, 6, 459.CrossRefGoogle Scholar
Gold, T. and Holye, F.: 1960, Monthly Notices Roy. Astron. Soc., 120, 8.CrossRefGoogle Scholar
Howard, R., Svestka, Z.: 1977, Solar Phys., 54, 65.CrossRefGoogle Scholar
Hoyng, P., Marsh, K.A., Zirin, H. and Dennis, R.B.: 1983, Ap. J., 285, 865.CrossRefGoogle Scholar
Kaufman, et al.: 1984, Solar Phys., 91, 354.Google Scholar
Kiplinger, A.L., Dennis, B.R., Emslie, A.G., Frost, K.J. and Orwig, L.E.: 1983, Solar Phys.Google Scholar
Kundu, M.R.: 1961, J. Geophys. Res., 66, 4308.CrossRefGoogle Scholar
Kundu, M.R., Schmahl, E.J., Velusamy, T. and Vlahos, L.: 1982, Astron. Astrophys., 108, 188.Google Scholar
Kundu, M.R.: this issue.Google Scholar
Langdon, A.B. and Lasinski, B.F.: 1976, Methods in Computational Physics, Academic Press, New York, Vol. 16, p. 327.Google Scholar
Leboeuf, J.N., Tajima, T. and Dawson, J.M.: 1982, Phys. Fluids, 25, 784.CrossRefGoogle Scholar
Lin, A.T., Dawson, J.M. and Okuda, H.: 1974, Phys. Fluids, 17, 1995.CrossRefGoogle Scholar
Marsh, K.A. and Hurford, G.T.: 1980, Ap. J. (Lett.), 240, 6111.CrossRefGoogle Scholar
Nakajima, H., Kosugi, T., Kai, K., and Enome, S.: 1983, Nature, (in press).Google Scholar
Parker, E.N.: 1963, Ap. J. Suppl. Ser., 77, 177.CrossRefGoogle Scholar
Petschek, H.E.: 1964, in Symposium on the Physics of Solar Flares, ed. by Hess, W.N., NASA, Washington, p. 425.Google Scholar
Pritchett, P.L. and Wu, C.C.: 1979, Phys. Fluids, 22, 440.CrossRefGoogle Scholar
Sagdeev, R.Z. and Shapiro, V.D.: 1973, JETP Lett., 17, 279.Google Scholar
Sakai, J.: 1982, Ap. J., 263, 970.CrossRefGoogle Scholar
Sturrock, P.A. ed.: 1980, Solar Flares: Monograph from Skylab Solar Workshop II, Colorado Associated University Press, Boulder.Google Scholar
Svestka, Z.: 1976, Solar Flares, D. Reidel Publ. Co., Holland.CrossRefGoogle Scholar
Svestka, Z. and Howard, R.: 1981, Solar Phys., 71, 349.CrossRefGoogle Scholar
Sweet, P.A.: 1958, Nuovo Cimento Suppl., 8, (Ser. 10), 188.CrossRefGoogle Scholar
Tajima, T.: 1982, in Fusion Energy – 1981, (International Atomic Energy Agency, ICTP, Trieste, 1982) p. 403. Also IFSR#4… Google Scholar
Tajima, T. and Dawson, J.M.: 1980, Nuclear Fusion, 20, 1129.CrossRefGoogle Scholar
Tanaka, M. and Papadopoulos, K.: 1983, Phys. Fluids, 26, 1697.CrossRefGoogle Scholar
Vlahos, L. and Papadopoulos, K.: 1979, Ap. J., 233, 717.CrossRefGoogle Scholar
Wu, C.C., Leboeuf, J.N., Tajima, T. and Dawson, J.M.: 1983, Phys. Fluids, submitted for publication.Google Scholar