Skip to main content
SpringerLink
Log in

Solar-wind properties at the Earth as predicted by the two-fluid model

  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

The two-fluid equations for the solar wind are written down in a simplified form, similar to that suggested by Roberts (1971) for the one-fluid model. The equations are shown to depend only on one parameter,

$$K = GM\kappa _e m_p (\varepsilon _\infty T_0 )^{{3 \mathord{\left/ {\vphantom {3 2}} \right. \kern-\nulldelimiterspace} 2}} /4k^2 Fe,$$

, where G is the gravitational constant, M the mass of the star, κ e the thermal electron conductivity, m p the proton mass, k the Boltzman constant, kɛ ∞T0 the residual energy per particle at infinity and F e the electron-particle flux. For a variety of values of the density and temperature at the base of the corona we compute the solutions of the two-fluid solar wind model and compare the predicted and observed solar wind parameters at the Earth.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Axford, W. I.: 1968, Space Sci. Rev. 8, 331.

    Google Scholar 

  • Barnes, A., Hartle, R. E., and Bredekamp, J. H.: 1971, Astrophys. J. Letters 166, 153.

    Google Scholar 

  • Burlaga, L. F. and Ogilvie, K. W.: 1970a, Solar Phys. 15, 61.

    Google Scholar 

  • Burlaga, L. F. and Ogilvie, K. W.: 1970b, Astrophys. J. 159, 659.

    Google Scholar 

  • Chamberlain, J. W.: 1961, Astrophys. J. 133, 675.

    Google Scholar 

  • Cuperman, S. and Harten, A.: 1971, Astrophys. J. 163, 383.

    Google Scholar 

  • Durney, B. R.: 1971, Astrophys. J. 166, 669.

    Google Scholar 

  • Durney, B. R.: 1972, J. Geophys. Res. 77, 4042.

    Google Scholar 

  • Durney, B. R. and Roberts, P. H.: 1971, Astrophys. J. 170, 319.

    Google Scholar 

  • Durney, B. R. and Werner, N. E.: 1972, Astrophys. J. 171, 609.

    Google Scholar 

  • Fredericks, R. W.: 1969, J. Geophys. Res. 74, 2919.

    Google Scholar 

  • Freeman, N. C. and Johnson, R. S.: 1972, Proc. Roy. Soc., Series A 329, 241.

    Google Scholar 

  • Hartle, R. E. and Sturrock, P. A.: 1968, Astrophys. J. 151, 1155.

    Google Scholar 

  • Hartle, R. E. and Barnes, A.: 1970, J. Geophys. Res. 75, 6915.

    Google Scholar 

  • Hollweg, J. V.: 1971, J. Geophys. Res. 76, 7491.

    Google Scholar 

  • Hollweg, J. V.: 1973, Astrophys. J. 181, 547.

    Google Scholar 

  • Holzer, T. E. and Axford, W. I.: 1970, Ann. Rev. Astron. Astrophys. 8, 31.

    Google Scholar 

  • Hundhausen, A. J.: 1968, Space Sci. Rev. 8, 690.

    Google Scholar 

  • Hundhausen, A. J.: 1970, Rev. Geophys. Space Phys. 8, 729.

    Google Scholar 

  • Hundhausen, A. J.: 1972, Coronal Expansion and Solar Wind, Springer-Verlag, New York.

    Google Scholar 

  • Hundhausen, A. J., Bame, S. J., and Ness, N. F.: 1967, J. Geophys. Res. 72, 5265.

    Google Scholar 

  • Hundhausen, A. J., Bame, S. J., Asbridge, J. R., and Sydoriak, S. J.: 1970, J. Geophys. Res. 75, 4643.

    Google Scholar 

  • Leer, E. and Axford, W. I.: 1972, Solar Phys. 23, 238.

    Google Scholar 

  • Lucas, R. D.: 1973, submitted to the Astrophys. J.

  • Mihalov, J. D. and Wolfe, J. H.: 1971, Cosmic Electrodyn. 2, 326.

    Google Scholar 

  • Montgomery, M. D.: 1972, in Sonett, C. P., P. J. Coleman Jr., and J. M. Wilcox (eds.), Proceedings of the Asilomar Conference on the Solar Wind, p. 208.

  • Montgomery, M. D., Bame, S. J., and Hundhausen, A. J.: 1968, J. Geophys. Res. 73, 4999.

    Google Scholar 

  • Neugebauer, M. and Snider, C. W.: 1966, J. Geophys. Res. 71, 4469.

    Google Scholar 

  • Parker, E. N.: 1958, Astrophys. J. 128, 664.

    Google Scholar 

  • Parker, E. N.: 1964a, Astrophys. J. 139, 72.

    Google Scholar 

  • Parker, E. N.: 1964b, Astrophys. J. 139, 93.

    Google Scholar 

  • Roberts, P. H.: 1971, Astrophys. Letters 9, 79.

    Google Scholar 

  • Roberts, P. H. and Soward, A. M.: 1972, Proc. Roy. Soc., Series A, 328, 185.

  • Sturrock, P. A. and Hartle, R. E.: 1966, Phys. Rev. Letters 16, 628.

    Google Scholar 

  • Weber, E. J.: 1970, Solar Phys. 14, 480.

    Google Scholar 

  • Weber, E. J.: 1972, Cosmic Electrodyn. 3, 116.

    Google Scholar 

  • Whang, Y. C. and Chang, C. C.: 1965, J. Geophys. Res. 70, 4175.

    Google Scholar 

  • Wolff, C. L., Brandt, J. C., and Southwick, R. G.: 1971, Astrophys. J. 165, 181.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Advanced Study Program, National Center for Atmospheric Research, Boulder, Colo., U.S.A.

    B. R. Durney

Authors
  1. B. R. Durney
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

The National Center for Atmospheric Research is sponsored by the National Science Foundation.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Durney, B.R. Solar-wind properties at the Earth as predicted by the two-fluid model. Sol Phys 30, 223–234 (1973). https://doi.org/10.1007/BF00156191

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00156191

Keywords

Search

Navigation