E-Print Archive

There are 1713 abstracts currently viewable.


Search:

Advanced Search
Options
Main Page Add New E-Print Submitter
Information
Feedback
News Help/FAQ About Preferences
Manage Key Phrase
Notification
Numerical simulation of the internal plasma dynamics of post-flare loops View all abstracts by submitter

andrea costa   Submitted: 2009-10-02 17:20

We integrate the MHD ideal equations of a slender flux tube to simulate the internal plasma dynamics of coronal post-flare loops. We study the onset and evolution of the internal plasma instability to compare with observations and to gain insight into physical processes and characteristic parameters associated with flaring events. The numerical approach uses a finite- 1 volume Harten-Yee TVD scheme to integrate the 1D 2 MHD equations specially designed to capture supersonic flow discontinuities. We could reproduce the observational sliding down and upwardly propagating of brightening features along magnetic threads of an event occurred on October 1st, 2001. We show that high?speed downflow perturbations, usually interpreted as slow magnetoacoustic waves, could be better interpreted as slow magnetoacoustic shock waves. This result was obtained considering adiabaticity in the energy balance equation. How- ever, a time?dependent forcing from the basis is needed to reproduce the reiteration of the event which resembles observational patterns -commonly known as quasi?periodic pulsations (QPPs)- which are related with large scale characteristic longitudes of coherence. This result reinforces the interpretation that the QPPs are a response to the pulsational flaring activity.

Authors: Fernández, Carlos, Costa, Andrea, Elaskar, Sergio, Schulz, Walkiria
Projects: TRACE

Publication Status: Accepted MNRAS
Last Modified: 2009-10-05 09:41
Go to main E-Print page  Plasma heating in the very early phase of solar flares  Numerical simulation of dark lanes in post-flare supra-arcade  Edit Entry  Download Preprint  Delete Entry 

Key
Go to main E-Print pageGo to main E-Print page.
Previous AbstractPrevious Abstract.
Next AbstractNext Abstract.
Download PreprintDownload Preprint.
Submitter's HomepageSubmitters Homepage.
Edit EntryEdit Entry.
View All Abstracts By SubmitterView all abstracts by submitter.
Delete AbstractDelete abstract.

Latest Entries
Statistical properties of H -alpha flares in relation to sunspots and active regions in the cycle 23
Diagnostics of energetic electrons with anisotropic distributions in solar flares I. Hard X-rays bremsstrahlung emission
On the Correlation between Spectra of Solar Microwave Bursts and Proton Fluxes near the Earth
Sun-as-a-Star, Chromospheric Lines, 1974-2009
FORMATION OF TORUS-UNSTABLE FLUX ROPES AND ELECTRIC CURRENTS IN ERUPTING SIGMOIDS
Resolving the Azimuthal Ambiguity in Vector Magnetogram Data with the Divergence-Free Condition: Application to Discrete Data
Minima of Solar Cycles 22/23 and 23/24 as Seen in SOHO/CELIAS/SEM Absolute Solar EUV Flux
HINODE OBSERVATIONS OF COHERENT LATERAL MOTION OF PENUMBRAL FILAMENTS DURING A X-CLASS FLARE
EUV SpectroPhotometer (ESP) in Extreme Ultraviolet Variability Experiment
The effect of wave-particle interactions on low energy cutoffs in solar flare electron spectra
Heliospheric Current Sheet Distortions from Adjacent Outflowing Transients: Multi-spacecraft Observations
A detailed investigation of the properties of a Vlasov-Maxwell equilibrium for the force-free Harris sheet}
On the Relationship between Equilibrium Bifurcations and Ideal MHD Instabilities for Line-Tied Coronal Loops}
Coronal Mass Ejections and Global Coronal Magnetic Field Reconfiguration
Relationship Between a Coronal Mass Ejection-Driven Shock and a Coronal Metric Type II Burst
An Intriguing Chromospheric Jet Observed by Hinode: I. Fine Structure Kinematics and Evidence of Unwinding Twists
A Code for Automated Tracing of Coronal Loops Approaching Visual Perception
Large Amplitude Oscillations in Prominences
An Extension of the Theory of Kinematic MHD Models of Collapsing Magnetic Traps to 2.5D with shear flow and to 3D
Confirming a Seismologically Inferred Coronal Temperature

Related Pages
MSU Solar Physics.
Max Millennium Science Mail Archive.
Max Millennium Message of the Day Mail Archive.
Max Millennium Flare Catalog

Archive Maintainer
Alisdair Davey



© 2003 Solar Physics Group - Montana State University