Please use this identifier to cite or link to this item:
Title: Radio synthesis imaging of scatter-broadening at small solar elongations
Authors: Anantharamaiah, K.R.
Gothoskar, Pradeep
Cornwell, T.J.
Keywords: Solar wind
Synthesis imaging
Issue Date: 1995
Publisher: Indian Academy of Sciences, Bangalore, India.
Citation: Journal of Astrophysics and Astronomy Supplement, 1995, Vol. 16, p265-267.
Abstract: When the lines of sight to distant radio sources pass close to the Sun, the radiation from the source undergoes scattering due to electron density irregularities in the outflowing solar wind plasma and phenomenon such as intensity scintillations and angular broadening can be observed. At small solar elongations (E < 4°) the scattering is sufficiently strong that the scatter-broadened image can be resolved using radio synthesis arrays such as the VLA1. The measured visibilities and the reconstructed image can be used to study the turbulence spectrum and anisotropy in the solar wind. We present here some results of observations of three strong radio sources at several elongations in the range 0.5°- 4° using the A-configuration of the VLA (maximum baseline 35 km) at wavelengths of 2,3.5,6, and 20cm.
Description: Proceedings of the 6th Asian Pacific regional meeting on astronomy of the IAU, Pune, 1993.
ISSN: 0250-6335
Copyright: Indian Academy of Sciences, Bangalore, India.
Appears in Collections:Research Papers (A&A)

Files in This Item:
File Description SizeFormat 
1995 JAA Suppl V16 p265.pdf3p.109.86 kBAdobe PDFView/Open

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.