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VLA Observations of Angular Broadening Close to the Sun

  • Pradeep Gothoskar
  • K. R. Anantharamahaia
  • Ketan Desai
  • A. P. Rao
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Abstract

We present synthesis imaging of scatter-broadening of radio sources carried out usingthe Very Large Array (VLA)✭ at six radio frequencies during the period of solar minimum. Threecompact radio sources were observed from 2 to 16 solar radii around the sun. The data indicate highlyanisotropic scattering. The scatter-broadening was estimated from the area of the scattered imageand was found to be factor of two lower and orientation of magnetic fields was closer to the radialdirection. Present observations confirm the variation of scatter-broadening with solar elongation.

Keywords

Solar Wind Radio Source Density Fluctuation Solar Minimum Solar Radius 
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References

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Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  • Pradeep Gothoskar
    • 1
  • K. R. Anantharamahaia
    • 2
  • Ketan Desai
    • 3
  • A. P. Rao
    • 1
  1. 1.NCRA, TIFRPuneIndia
  2. 2.RRIBangaloreIndia
  3. 3.NRAOUSA

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