Numerical simulation of solar wind density fluctuations and their effects on VLF radio interferometry

Radio Science ◽  
1990 ◽  
Vol 25 (5) ◽  
pp. 743-755
Author(s):  
Robert S. Williamson ◽  
Dayton L. Jones
Keyword(s):  
Numerical Simulation ◽  
Solar Wind ◽  
Density Fluctuations ◽  
Radio Interferometry ◽  
Solar Wind Density

scholarly journals INTERMITTENCY OF SOLAR WIND DENSITY FLUCTUATIONS FROM ION TO ELECTRON SCALES

2014 ◽  
Vol 789 (1) ◽  
pp. L8 ◽  
Author(s):  
C. H. K. Chen ◽  
L. Sorriso-Valvo ◽  
J. Šafránková ◽  
Z. Němeček
Keyword(s):  
Solar Wind ◽  
Density Fluctuations ◽  
Solar Wind Density

scholarly journals Arbitrary-order Hilbert Spectral Analysis and Intermittency in Solar Wind Density Fluctuations

2018 ◽  
Vol 859 (1) ◽  
pp. 27 ◽  
Author(s):  
Francesco Carbone ◽  
Luca Sorriso-Valvo ◽  
Tommaso Alberti ◽  
Fabio Lepreti ◽  
Christopher H. K. Chen ◽  
...  
Keyword(s):  
Solar Wind ◽  
Spectral Analysis ◽  
Arbitrary Order ◽  
Density Fluctuations ◽  
Solar Wind Density

Observing solar wind turbulence in the corona with ground-based radio telescopes

2021 ◽  
Author(s):  
Du Toit Strauss ◽  
Gert Botha ◽  
James Chibueze ◽  
Eduard Kontar ◽  
Eugene Engelbrecht ◽  
...  
Keyword(s):  
Solar Wind ◽  
Density Fluctuations ◽  
Radial Dependence ◽  
Radio Sources ◽  
Radio Telescopes ◽  
Solar Wind Density ◽  
Small Scales ◽  
Square Kilometer Array ◽  
Initial Results ◽  
Dissipation Range

<p>When point-like galactic and extragalactic radio sources are observed through the solar corona by ground-based radio telescopes, plasma density fluctuations in the turbulent solar wind scatter these photons, leading to an observed broadening and/or elongation of such sources. By observing this broadening for several sources, over several days, we can get information about e.g. the wavenumber and radial dependence of solar wind density fluctuations at very small scales (~30m - 8km) inside the Alfven radius, thereby capturing details of the turbulence dissipation range. Here, we present very initial results of such a study with the MeerKAT radio telescope in South Africa (being, of course, a precursor to the much larger Square Kilometer Array, SKA), discuss the preliminary results, and compare these with theoretical estimates and previous observations.</p>

scholarly journals Nearly incompressible fluids: Decay of solar wind density fluctuations

2008 ◽  
Vol 113 (A11) ◽  
pp. n/a-n/a ◽  
Author(s):  
P. Hunana ◽  
G. P. Zank ◽  
J. Heerikhuisen ◽  
D. Shaikh
Keyword(s):  
Solar Wind ◽  
Incompressible Fluids ◽  
Density Fluctuations ◽  
Solar Wind Density

MHD simulations of magnetospheric response to a strong solar wind density pulse

2021 ◽  
Author(s):  
Andrey Samsonov ◽  
Jennifer A. Carter ◽  
Graziella Branduardi-Raymont ◽  
Steven Sembay
Keyword(s):  
Solar Wind ◽  
Dynamic Pressure ◽  
Solar Wind Density ◽  
Ionospheric Currents ◽  
X Ray ◽  
Interplanetary Coronal Mass Ejection ◽  
Explorer Mission ◽  
The One ◽  
Mass Ejection ◽  
Present Simulation

<p>On 16-17 June 2012, an interplanetary coronal mass ejection with an extremely high solar wind density (~100 cm<sup>-3</sup>) and mostly strong northward (or eastward) interplanetary magnetic field (IMF) interacted with the Earth’s magnetosphere. We have simulated this event using global MHD models. We study the magnetospheric response to two solar wind discontinuities. The first is characterized by a fast drop of the solar wind dynamic pressure resulting in rapid magnetospheric expansion. The second is a northward IMF turning which causes reconfiguration of the magnetospheric-ionospheric currents. We discuss variations of the magnetopause position and locations of the magnetopause reconnection in response to the solar wind variations. In the second part of our presentation, we present simulation results for the forthcoming SMILE (Solar wind Magnetosphere Ionosphere Link Explorer) mission. SMILE is scheduled for launch in 2024. We produce two-dimensional images that derive from the MHD results of the expected X-ray emission as observed by the SMILE Soft X-ray Imager (SXI). We discuss how SMILE observations may help to study events like the one presented in this work.</p>

Sign in / Sign up

Export Citation Format

Share Document