Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-12T18:50:24.074Z Has data issue: false hasContentIssue false
  • English
  • Français

Composition of the Solar Wind, Secondary Ion Generation and Pick-Up

Published online by Cambridge University Press:  14 August 2015

Urs Mall
Urs Mall*
Affiliation:
Max-Planck Institut für Aeronomie, Max-Planck-Str. 2, D-37191 Katlenburg-Lindau, Germany

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The solar wind is an ionized gas which, as a consequence of a hot solar corona and a low fluid pressure in the interstellar space, continuously emanates from the Sun into space to define a region known as the heliosphere. Since the electrical conductivity of the solar wind is very high, diffusion of the magnetic field through the plasma is not taken into account. In this picture (the frozen-in approximation) one imagines that the solar magnetic field is dragged into the heliospheric space by the radially outflowing solar wind. The structure of the solar wind is therefore intimately related to the structure of the solar corona and the solar magnetic field. The solar wind plasma itself is composed of protons, electrons, alpha particles, and a minor fraction of heavy ions.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 11 , Issue 2: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part B), 1997 , 1998 , pp. 847 - 850
Copyright
Copyright © Kluwer 1998

References

Baraov, V.B., and Zaitsev, N.A. (1995) On the problem of the solar wind interaction with magnetized interstellar plasma, Astron. Astrophys, Vol. no. 304, pp. 631–637 Google Scholar
Chassefiere, E., Dalaudier, F., Bertaux, J.L. (1988) Estimate of interstellar helium parameters from Prognoz 6 and Voyager 1/2 – EUV resonance glow measurements taking into account a possible redshift in the solar line profile, Astron. Astrophys, Vol. no. 201, pp. 113–122 Google Scholar
Dalaudier, F., Bertaux, J.L., Kurt, V.G., Mironova, E.N. (1984) Characteristics of interstellar helium observed with Prognoz 6 58.4-nm photometers, Astron. Astrophys, Vol. no. 134, pp. 171–184 Google Scholar
Fahr, H.J. (1968), On the influence of neutral interstellar matter on the upper atmosphere, Astrophysics and Space Science, Vol. no. 2, pp. 474–495 Google Scholar
Geiss, J., Gloeckler, G., Mall, U., von Steiger, R., Galvin, A., Ogilvie, K.W. (1994) Interstellar oxygen, nitrogen and neon in the heliosphere, Astron. Astrophys, Vol. no. 282, pp. 924–933 Google Scholar
Gloeckler, G., Geiss, J., Balsiger, H., Fisk, L.A., Galvin, A. Ipavich, F.M., Ogilvie, K.W., von Steiger, R., Wilken, W. (1993) Detection of Interstellar Pick-Up Hydrogen in the Solar System, Science, Vol. no. 261, pp. 70–71 Google Scholar
Gloeckler, G., Geiss, J., Roelof, E.C., Fisk, L.A., Ipavich, F.M., Ogilvie, K.W., Lanzerotti, L.J., von Steiger, R., Wilken, B. (1994), Acceleration of interst. PUI’s in the disturbed solar wind observed on Ulysses, J. Geophys. Res., Vol. no. 99, pp. 17637–17643 Google Scholar
Moebius, E.D., Hovestadt, B., Klecker, D., Scholer, M., Gloeckler, G. (1993), Direct observation of He+ pick-up ions of interstellar origin in the solar wind, Nature, Vol. no. 318, pp. 426–429 Google Scholar
Ogilvie, K.W. and Coplan, M.A.,(1995), NASA progress report Google Scholar
Ripken, H.W., and Fahr, H.J. (1983), Modification of the local interstellar gas properties in the heliospheric interface, Astron. Astrophys, Vol. no. 122, pp. 181–192 Google Scholar
Rosenbauer, H., Fahr, H.J., Keppler, E., Witte, M., Hemmerich, P., Lauche, H., Loidl, A., Zwick, R. (1983), The ISPM Interstellar Neutral – Gas Experiment, In: The international Solar Polar Mission – Its Scientific Investigation, ESA SP-1050, pp. 123–139 Google Scholar
Rucinski, D., Bzowski, M. Fahr, H.J. (1997) Minor helium components in the expanding solar wind, Astron. Astrophys, in pressGoogle Scholar
Witte, M., Rosenbauer, H., Banaszkiewicz, M., Fahr, H.J., (1993) The Ulysses neutral gas experiment – Determination of the velocity and temperature of the interstellar neutral helium, Adv. Space Res., Vol. no. 13, (6), pp. 121–130 Google Scholar