Electron properties of high-speed solar wind from polar coronal holes obtained by ulysses thermal noise spectroscopy: Not so dense, not so hot

Geophysical Research Letters

Volumn 35, Issue 19, 2008, Pages

  Issautier, Karine ^a   Le Chat, G ^a   Meyer Vernet, N ^a   Moncuquet, M ^a   Hoang, S ^a   MacDowall, R J ^b   McComas, D J ^c  

^a UNIVERSITÉ PARIS DIDEROT   (France)

^b NASA GODDARD SPACE FLIGHT CENTER   (United States)

^c SOUTHWEST RESEARCH INSTITUTE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

SOLAR ENERGY; THERMAL NOISE;

CORONAL HOLES; ELECTRON DENSITIES; ELECTRON PROPERTIES; FAST SCANS; FAST SOLAR WINDS; IN-SITU; NOISE SPECTROSCOPIES; RADIO OBSERVATIONS; SCALE PROPERTIES; SOLAR ACTIVITIES; SOLAR MINIMUMS; ULYSSES;

SOLAR WIND;

CORONAL MASS EJECTION; ELECTRON DENSITY; IN SITU MEASUREMENT; NOISE; POLAR REGION; SOLAR WIND; SPECTRAL ANALYSIS;

EID: 57749189781     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2008GL034912     Document Type: Article

References (23)

1. Bame, S. J., et al. (1992), Ulysses solar wind plasma experiment, Astron. Astrophys. Suppl. Ser., 92(2), 237.
2. Issautier, K., N. Meyer-Vernet, M. Moncuquet, and S. Hoang (1998), Solar wind radial and latitudinal structure: Electron density and core temperature from Ulysses thermal noise spectroscopy, J. Geophys. Res., 103, 1969-1979.
3. Issautier, K., N. Meyer-Vernet, M. Moncuquet, S. Hoang, and D. McComas (1999a), Quasi-thermal noise in a drifting plasma: Theory and application to solar wind diagnostic on Ulysses, J. Geophys. Res., 104, 6691-6704.
4. Issautier, K., N. Meyer-Vernet, M. Moncuquet, and S. Hoang (1999b), High-speed solar wind from Ulysses measurements and comparison with exospheric models, in Proceedings of the Ninth International Solar Wind Conference, edited by S. R. Habbal et al., AIP Conf. Proc., 471, 581-585.
5. Issautier, K., R. M. Skoug, J. T. Gosling, S. P. Gary, and D. J. McComas (2001), Solar wind plasma parameters on Ulysses: Detailed comparison between the URAP and SWOOPS experiments, J. Geophys. Res., 106, 15,665-15,675.
6. Issautier, K., et al. (2003), Large-scale structure of the polar solar wind at solar maximum: Ulysses/URAP observations, in 10th International Conference on Solar Wind, edited by M. Velli, AIP Conf. Proc., 679, 263-266.
7. Issautier, K., M. Moncuquet, and S. Hoang (2004), Solar wind electron parameters from Ulysses/URAP quasi-thermal noise measurements at solar maximum, Sol. Phys., 221, 351-360.
8. Luhmann, J. G., et al. (2002), Solar cycle changes in coronal holes and space weather cycles, J. Geophys. Res., 107(A8), 1154, doi:10.1029/2001JA007550.
9. Makarov, V. I., A. G. Tlatov, and D. K. Callebaut (2004), Long-term changes of polar activity of the Sun, Sol. Phys., 224, 49-59.
10. McComas, D. J., et al. (2000), Solar wind observations over Ulysses' first full polar orbit, J. Geophys. Res., 105, 10,419-10,433.
11. McComas, D. J., et al. (2002), Ulysses' second fast-latitude scan: Complexity near solar maximum and the reformation of polar coronal holes, Geophys. Res. Lett., 29(9), 1290, doi:10.1029/2001GL014164.
12. McComas, D. J., et al. (2003), The three-dimensional solar wind around solar maximum, Geophys. Res. Lett., 30(10), 1517, doi:10.1029/ 2003GL017136.
13. McComas, D. J., et al. (2008), Weaker solar wind from the polar coronal holes and the whole Sun, Geophys. Res. Lett., doi:10.1029/ 2008GL034896, in press.
14. Meyer-Vernet, N., and K. Issautier (1998), Electron temperature in the solar wind: Generic radial variation from kinetic collisionless models, J. Geophys. Res., 103, 29,705-29,717.
15. Meyer-Vernet, N., et al. (1998), Measuring plasma parameters with thermal noise spectroscopy, in Measurement Techniques in Space Plasmas: Fields, Geophys. Monograph Ser., vol. 103, edited by R. Pfaff et al., pp. 205-210, AGU, Washington, D. C.
16. Neugebauer, M. (2001), The solar wind and heliospheric magnetic field in three dimensions, in The Heliosphere Near Solar Minimum: The Ulysses Perspective, edited by A. Balogh, R. Marsden, and E. J. Smith, pp. 43-99, Springer, New York.
17. Phillips, J., et al. (1995), Ulysses solar wind plasma observations from pole to pole, Geophys. Res. Lett., 22, 3301-3304.
18. Richardson, I. G., E. W. Cliver, and H. V. Cane (2002), Long-term trends in interplanetary magnetic field strength and solar wind structure during the twentieth century, J. Geophys. Res., 107(A10), 1304, doi:10.1029/2001JA000507.
19. Smith, E. J., and A. Balogh (2008), Decrease in heliospheric magnetic flux in this solar minimum: Recent Ulysses magnetic field observations, Geophys. Res. Lett., doi:10.1029/2008GL035345, in press.
20. Smith, E. J., et al. (2003), The Sun and the heliosphere at solar maximum, Science, 302, 1165-1169.
21. Stone, R. G., et al. (1992), The unified radio and plasma wave investigation on Ulysses, Astron. Astrophys. Suppl., 92, 291.
22. von Steiger, R., et al. (2001), The 3-D heliosphere from the Ulysses and ACE Solar Wind Ion Composition experiments, Space Sci. Rev., 97, 123-127.
23. Weiss, N. O. (1994), Solar and stellar dynamos, in Lectures on Solar and Planetary Dynamos, edited by M. R. E. Proctor and A. D. Gilbert, pp. 59-95, Cambridge Univ. Press, New York.