Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/7215
Title: Turbulent Density Fluctuations and Proton Heating Rate in the Solar Wind from 9–20 R ⊙
Authors: Sasikumar Raja, K
Subramanian, P
Ramesh, R
Vourlidas, Angelos
Ingale, M
Keywords: Occultations;Scattering;Solar wind;Sun: corona;Sun: radio radiation;Turbulence
Issue Date: 1-Dec-2017
Publisher: IOP Publishing
Citation: The Astrophysical Journal, Vol. 850, No. 2, 129
Abstract: We obtain scatter-broadened images of the Crab Nebula at 80 MHz as it transits through the inner solar wind in 2017 and 2016 June. These images are anisotropic, with the major axis oriented perpendicular to the radially outward coronal magnetic field. Using these data, we deduce that the density modulation index (δ {N}e/{N}e) caused by turbulent density fluctuations in the solar wind ranges from 1.9× {10}-3 to 7.7× {10}-3 between 9 and 20 R ⊙. We also find that the heating rate of solar wind protons at these distances ranges from 2.2× {10}-13 to 1.0× {10}-11 {erg} {{cm}}-3 {{{s}}}-1. On two occasions, the line of sight intercepted a coronal streamer. We find that the presence of the streamer approximately doubles the thickness of the scattering screen.
Description: Restricted Access
URI: http://hdl.handle.net/2248/7215
ISSN: 0004-637X
???metadata.dc.rights???: © The American Astronomical Society
???metadata.dc.relation.uri???: https://doi.org/10.3847/1538-4357/aa94cd
Appears in Collections:IIAP Publications

Files in This Item:
File Description SizeFormat 
Turbulent_Density_Fluctuations_and_Proton_Heating_Rate.pdfRestricted Access922.98 kBAdobe PDFView/Open    Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.