Abstract
view Abstract Citations (19) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Nonlinear Evolution of Magnetized Solar Filaments Sparks, L. ; van Hoven, G. ; Schnack, D. D. Abstract Thermal instability driven by optically thin radiation is believed to initiate the formation of plasma filaments in the solar corona. The fact that filaments are observed generally to separate regions of opposite, line-of-sight, magnetic polarity in the underlying photosphere suggests that filament formation requires the presence of a highly sheared, local magnetic field. Two-dimensional, nonlinear, magnetohydrodynamic simulations of the local genesis and growth of solar filaments in a force-free, sheared, magnetic field were performed, and the evolution of generic perturbations possessing broad spatial profiles was traced. It was found that simulations of the evolution of initial random-noise perturbations produce filamentary plasma structures that exhibit densities and temperatures characteristic of observed solar filaments. Furthermore, in each of these simulations, the filament axis lies at a finite angle with respect to the local magnetic field, consistent with solar observations. Publication: The Astrophysical Journal Pub Date: April 1990 DOI: 10.1086/168617 Bibcode: 1990ApJ...353..297S Keywords: Evolution (Development); Force-Free Magnetic Fields; Solar Corona; Solar Prominences; Density Distribution; Magnetohydrodynamic Stability; Optical Thickness; Perturbation; Solar Magnetic Field; Temperature Distribution; Solar Physics; HYDROMAGNETICS; SUN: MAGNETIC FIELDS; SUN: PROMINENCES full text sources ADS |
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
