Abstract
We have investigated the relationship between the thermal energy released from 29 solar flares and the propagation features of their associated interplanetary shock waves that were detected at 1 AU. The 29 interplanetary shock waves were identified unambiguously and their tracking from each solar flare was deduced by tracking their associated interplanetary type-II radio emission. The thermal energy released in the solar flares was estimated from the time-intensity profiles of 1–8 Å soft X-ray bursts from each flare. We find a good relationship between the flares' thermal energy with the IP shock-waves' transient velocity and arrival time at the Earth — that is, the largest flare energy released is associated with the faster shock waves. The IP shock velocity (without influence of solar wind) varies asW +0.32 and transit time varies asW −0.32, wereW is the energy. The actual transit velocity at the IP shock (shock velocity + solar wind velocity) is exponentially proportional to the associated flare's thermal energy,V actual≈W 0.13. The flare thermal energy-shock velocity relationship could, we suggest, be used to predict the arrival time at the flare-generated IP shock at the Earth. Finally, we discuss a possible scenario of formation of a shock wave during the early phase of the flare and its propagation features.
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References
Cane, H. V.: 1985,J. Geophys. Res. 90, 191.
Cane, H. V. and Stone, R. G.: 1984,Astrophys. J. 282, 339.
Cane, H. V., Stone, R. C., Fainberg, J., Steinberg, J. L., and Hoang, S.: 1982,Solar Phys. 78, 187.
Caroubalos, C.: 1964,Ann. Astrophys. 27, 333.
de Jager, C., Boelee, A., and Rust, D. M.: 1984,Solar Phys. 92, 245.
Donnelly, R. F. and Bouwer, S. D.: 1980, NOAA Technical Memorandum ERL SEL-57.
Dryer, M.: 1974,Space Sci. Rev. 15, 403.
Hundhausen, A. J.: 1972,Coronal Expansion and Solar Wind, Springer-Verlag, New York.
King, J. H.: 1983,Interplanetary Medium Data Book, Supplement, NASA/GSFC, Greenbelt, Maryland.
Lee, T. S.: 1965,Phys. Fluids 8, 1266.
Pinter, S. and Dryer, M.: 1985, in preparation.
Roberts, J. A.: 1959,Australian J. Phys. 12, 327.
Rust, D. M., Simnett, G. M., and Smith, D. F.: 1985,Astrophys. J. 288, 407.
Sedov, L.: 1959, in M. Holt (ed.),Similarity and Dimensional Methods in Mechanics, Academic Press, New York.
Skirgiello, M.: 1978, preprint.
Smart, D. F. and Shea, M. A.: 1985,J. Geophys. Res. 90, 183.
Smerd, S. F., Sheridan, K. V., and Stewart, R. T.: 1975,Astrophys. Letters 16, 23.
Wu, S. T., Nakagawa, Y., Han, S. M., and Dryer, M.: 1982,Astrophys. J. 262, 369.
Zel'dovich, Y. B. and Raizer, Y. P.: 1967,Physics of Shock Waves and High-Temperature Hydrodynamic Phenomena, Academic Press, New York and London.
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On leave as Visiting Scholar sponsored by the U.S. National Academy of Sciences-Czechoslovak Academy of Sciences Bilateral Program.
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Pinter, S., Dryer, M. The influence of the energy emitted by solar flare soft X-ray bursts on the propagation of their associated interplanetary shock waves. Astrophys Space Sci 116, 51–60 (1985). https://doi.org/10.1007/BF00649273
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DOI: https://doi.org/10.1007/BF00649273