Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-28T18:48:52.604Z Has data issue: false hasContentIssue false
  • English
  • Français

Study of Interplanetary Disturbances Using IPS

Published online by Cambridge University Press:  12 April 2016

S. Ananthakrishnan
S. Ananthakrishnan*
Affiliation:
National Centre for Radio AstrophysicsTata Institute of Fundamental ResearchPoona University CampusPune 411 007, India

Abstract

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 usefulness of Interplanetary Scintillation (IPS) data, which provide solar wind velocities (V) and relative scintillation indices (g), for predicting interplanetary disturbances is examined. Analysis of two years of g-map data from Cambridge shows that atleast two IPS stations are required for more definitive identification of events. Campaigns were made in April-May 1992 to map predicted solar wind disturbances simultaneously from two widely separated telescopes at Cambridge and Ooty. These show that apriori knowledge of strong flare activity helps in detecting scintillation enhancement. On the other hand, other events have been observed at Ooty, which show that both flares and coronal holes may be responsible for producing interplanetary disturbances, and hence it is premature to identify any one type of solar event as the sole cause of the disturbances.

Type
IPS and Other Remote Sensing Measurements
Information
International Astronomical Union Colloquium , Volume 154: Solar and Interplanetary Transients , 1996 , pp. 215 - 219
Copyright
Copyright © Kluwer 1997

References

Dryer, M. and Smart, D.F.: 1984, Adv. Space Res. 4, 291 CrossRefGoogle Scholar
Janardhan, P. et al: 1995, Solar Physics, in pressGoogle Scholar
Leinbach, H., Ananthakrishnan, S. and Detman, T.R.: 1994, NOAA Technical Memorandum ERL SEL-83,Google Scholar
Manoharan, P.K. and Ananthakrishnan, S.: 1990, Mon. Not. Roy. astr. Soc 244, 691 Google Scholar
Manoharan, P.K., et al: 1995, Solar Physics 156, 377 CrossRefGoogle Scholar