Articles | Volume 18, issue 9
Ann. Geophys., 18, 1003–1008, 2000

Special issue: IXe EISCAT

Ann. Geophys., 18, 1003–1008, 2000

  30 Sep 2000

30 Sep 2000

Observations of interplanetary scintillation during the 1998 Whole Sun Month: a comparison between EISCAT, ORT and Nagoya data

P. J. Moran1, S. Ananthakrishnan2, V. Balasubramanian3, A. R. Breen1, A. Canals1, R. A. Fallows1, P. Janardhan*,4, M. Tokumaru5, and P. J. S. Williams1 P. J. Moran et al.
  • 1Physics Department, University of Wales Aberywyth, Penglais Hill, Aberystwyth, SY23 3BZ, UK
  • 2National Centre for Radio Astrophysics, TIFR, PO Box 3, Ganeshkhind, Pune 411 007, India
  • 3Radio Astronomy Centre, TIFR, PO Box 8, Udhagamandalam 643 001, India
  • 4Department of Astronomy, University of Maryland, College Park, MD 20742, USA
  • 5Solar-Terrestrial Environment Laboratory, Nagoya University, Toyokawa, Aichi 442, Japan
  • *On leave from the Physical Research Laboratory, Ahmedabad 380 009, India
  • Correspondence to: P. J. Moran
  • e-mail:

Abstract. Observations of interplanetary scintillation (IPS) allow accurate solar wind velocity measurements to be made at all heliographic latitudes and at a range of distances from the Sun. The data may be obtained with either single, double or multiple antennas, each requiring a different method of analysis. IPS data taken during the 1998 whole sun month (30th July-31st August 1998) by EISCAT, the ORT (Ooty Radio Telescope), India, and the Nagoya IPS system, Japan, allow the results of individual methods of analysis to be compared. Good agreement is found between the velocity measurements using each method, and when combined an improved understanding of the structure of the solar wind can be obtained.

Key words: Interplanetary physics (solar wind plasma; sources of the solar wind) - Solar physics, astrophysics and astronomy (instruments and techniques)

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