Abstract
Low frequency radio observations (2.8 MHz-67 kHz) from the RAE-1 and IMP-6 satellites allow the tracking of type III solar burst exciters out to large distances from the Sun (of the order of 1 AU). A study of the interaction processes between the exciter and the interplanetary medium was made using the time-intensity profiles of the radio emission. We have investigated the change in exciter length with distance from the Sun, and the resulting exciter velocity dispersion which can be deduced from this change. From detailed measurements on 35 simple bursts we have found that the exciter length increases at a faster rate than a constant velocity dispersion would give. We have also investigated the damping of the radio emission and have concluded that some current theories of the damping mechanism give results which are not consistent with the low frequency observations.
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References
Alvarez, H. and Haddock, F.: 1971, UM/RAO Report 71-9.
Alvarez, H., Haddock, F., and Lin, R.: 1972, Solar Phys. 26, 468.
Aubier, M. and Boischot, A.: 1972, Astron. Astrophys. 19, 343.
Elgaroy, O.: 1965, in J. Aarons (ed.), Solar System Radio Astronomy, Plenum, New York.
Fainberg, J. and Stone, R.: 1971, Solar Phys. 17, 392.
Fainberg, J., Evans, L. G., and Stone, R.: 1972, Science 178, 743.
Graedel, T. and Lanzerotti, L.: 1971, J. Geophys. Res. 76, 6932.
Hartz, T.: 1969, Planetary Space Sci. 17, 267.
Harvey, C. and Aubier, M.: 1973, Astron. Astrophys. 22, 1.
Hughes, M. and Harkness, R.: 1963, Astrophys. J. 138, 239.
Lin, R.: 1970a, Solar Phys. 12, 266.
Lin, R.: 1970b, Solar Phys. 15, 453.
Lin, R. and Anderson, K.: 1967, Solar Phys. 1, 446.
Lin, R., Evans, L. G., and Fainberg, J.: 1973, Univ. of Calif., Berkeley, Space Sciences Laboratory Preprint, Series 14, Issue 26.
Malitson, H., Fainberg, J., and Stone, R.: 1973, Astrophys. J. 183, L35.
Malville, J.: 1962, Astrophys. J. 136, 266.
Sakurai, K. and Stone, R.: 1971, Solar Phys. 19, 247.
Smith, D.: 1970a, Adv. Astron. Astrophys. 7, 147.
Smith, D.: 1970b, Solar Phys. 15, 202.
Spitzer, L.: 1962, Physics of Fully Ionized Gases, Interscience, New York.
Van Allen, J. and Krimigis, S.: 1965, J. Geophys. Res. 70, 5737.
Weiss, A. and Sheridan, K.: 1962, J. Phys. Soc. Japan, Supp. A-II 17, 223.
Weiss, A. and Wild, J.: 1964, Australian J. Phys. 17, 282.
Whang, Y.: 1972, Astrophys. J. 178, 221.
Wild, J.: 1950, Australian J. Sci. Res. Ser. A3, 541.
Wild, J.: 1964, in W. Hess (ed.), AAS-NASA Symposium on the Physics of Solar Flares, NASA SP-50, p. 161.
Wild, J.: 1970, Proc. Astron. Soc. Australia 1, 365.
Wild, J. and Smerd, S.: 1972, Ann. Rev. Astron. Astrophys. 10, 159.
Wolff, C., Brandt, J., and Southwick, R.: 1971, Astrophys. J. 165, 181.
Zaitsev, V., Mityakov, N., and Rapoport, V.: 1972, Solar Phys. 24, 444.
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Work performed while a NRC/NAS Postdoctoral Resident Research Associate.
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Evans, L.G., Fainberg, J. & Stone, R.G. Characteristics of type III exciters derived from low frequency radio observations. Sol Phys 31, 501–511 (1973). https://doi.org/10.1007/BF00152825
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DOI: https://doi.org/10.1007/BF00152825