E-Print Archive

There are 3835 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
Simulating coronal loop implosion and compressible wave modes in a flare hit active region View all abstracts by submitter

Aveek Sarkar   Submitted: 2017-11-22 03:20

There is considerable observational evidence of implosion of magnetic loop systems inside solar coronal active regions following high energy events like solar flares. In this work, we propose that such collapse can be modeled in three dimensions quite accurately within the framework of ideal magnetohydrodynamics. We furthermore argue that the dynamics of loop implosion is only sensitive to the transmitted disturbance of one or more of the system variables, e.g. velocity generated at the event site. This indicates that to understand loop implosion, it is sensible to leave the event site out of the simulated active region. Towards our goal, a velocity pulse is introduced to model the transmitted disturbance generated at the event site. Magnetic field lines inside our simulated active region are traced in real time, and it is demonstrated that the subsequent dynamics of the simulated loops closely resemble observed imploding loops. Our work highlights the role of plasma β in regards to the rigidity of the loop systems and how that might affect the imploding loops' dynamics. Compressible magnetohydrodynamic modes such as kink and sausage are also shown to be generated during such processes, in accordance with observations.

Authors: Aveek Sarkar, Bhargav Vaidya, Soumitra Hazra, Jishnu Bhattacharyya
Projects: None

Publication Status: accepted in ApJ
Last Modified: 2017-11-22 13:21
Go to main E-Print page  Solar-wind predictions for the Parker Solar Probe orbit  Development of Solar Flares and Features of the Fine Structure of Solar Radio Emission  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 Ribbon Evolution and Reconnection Electric Fields in Eruptive and Confined Flares
Unambiguous Evidence of Filament Splitting-Induced Partial Eruptions
On the Origin of the Double-cell Meridional Circulation in the Solar Convection Zone
Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares
Diffusive transport of energetic electrons in the solar corona: X-ray and radio diagnotics
Plasma evolution within an erupting coronal cavity
Identification of multiple hard X-ray sources in solar flares: A Bayesian analysis of the February 20 2002 event
Flux Rope Breaking and Formation of a Rotating Blowout Jet
On-Orbit Performance of the Helioseismic and Magnetic Imager Instrument onboard the Solar Dynamics Observatory
Two-Phase Heating in Flaring Loops
Evidence For The Magnetic Breakout Model in an Equatorial Coronal-Hole Jet
Spontaneous flux concentrations from the negative effective magnetic pressure instability beneath a radiative stellar surface
Powerful Solar Flares of September 2017: Correspondence Between Parameters of Microwave Bursts and Proton Fluxes near Earth
Evaluation of Applicability of a Flare Trigger Model based on Comparison of Geometric Structures
Coronal hole evolution from multi-viewpoint data as input for a STEREO solar wind speed persistence model
Formation and Dynamics of a Solar Eruptive Flux Tube
The Instruments and Capabilities of the Miniature X-ray Solar Spectrometer (MinXSS) CubeSats
Fine Structures of Solar Radio Type III Bursts and their Possible Relationship with Coronal Density Turbulence
Influence of misalignments on the performance of externally occulted solar coronagraphs. Application to PROBA-3/ASPIICS
Observations of Electron-driven Evaporation during a Flare Precursor

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