Observations of field-aligned density fluctuations in the inner solar wind

Citations Over TimeTop 10% of 1990 papers

Abstract

view Abstract Citations (136) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Observations of Field-aligned Density Fluctuations in the Inner Solar Wind Armstrong, J. W. ; Coles, W. A. ; Kojima, M. ; Rickett, B. J. Abstract This paper reports the results of radio wave scattering observations which show highly anisotropic density microstructure in the inner solar wind. These observations were made in October 1983 and 1985, using the National Radio Astronomy Observatory's Very Large Array. Heliocentric distances of the observations ranged from 2.2. to about 13 solar radii. The axial ratio of the density fluctuations, projected onto the plane of the sky, increased from about 4 at 10 solar radii to about 14 at 2.2 solar radii. The major axis appeared to be field aligned; that is, the irregularities were stretched out approximately along the radial. These results are, in general, consistent with the results of earlier observations. The present observations differ in that they were taken closer to the sun, they were sensitive to larger scale structures (up to about 35 km), and showed much higher anisotropy. Combining these data with previously taken data strongly indicates that the anisotropy is scale dependent; scales greater than 10 km appear to be more anisotropic than those less than 2 km. Publication: The Astrophysical Journal Pub Date: August 1990 DOI: 10.1086/169022 Bibcode: 1990ApJ...358..685A Keywords: Density Distribution; Electron Density (Concentration); Field Aligned Currents; Radio Waves; Solar Wind; Wave Scattering; Density Measurement; Periodic Variations; Spatial Distribution; Very Large Array (Vla); Solar Physics; SUN: SOLAR WIND full text sources ADS | data products SIMBAD (1)

Related Papers

• → Diagnosing solar wind origins usingin situmeasurements in the inner heliosphere(2018)61 cited
• → The Evolution of the 1/f Range within a Single Fast-solar-wind Stream between 17.4 and 45.7 Solar Radii(2023)26 cited
• → Properties of Steady Sub-Alfvénic Solar Wind in Comparison with Super-Alfvénic Wind from Parker Solar Probe Measurements(2023)13 cited
• → Solar wind speed within 20 R_S of the Sun estimated from limb coronal mass ejections(2006)15 cited
• → The Evolution of the 1/f Range Within a Single Fast-Solar-Wind Stream Between 17.4 and 45.7 Solar Radii(2023)3 cited