E-Print Archive

There are 4310 abstracts currently viewable.


Advanced Search
Main Page Add New E-Print Submitter
News Help/FAQ About Preferences
Manage Key Phrase
* News 04/04/20 * The archive is using a new backend database. This has thrown up a few SQL errors in the last few days. If you have any issues please email adavey@nso.edu with either the number of eprint you are trying to edit or a link to your preprint.

Numerical simulations of spicule formation in the solar atmosphere View all abstracts by submitter

Kris Murawski   Submitted: 2010-05-01 10:10

Context. We study the upward propagation of a localized velocity pulse that is initially launched below the transition region within the solar atmosphere. The pulse quickly steepens into a shock, which may lead to the formation of spicules. Aims. We aim to explore the spicule formation scenario in the framework of rebound shock model. Methods. We solve two-dimensional time-dependent magnetohydrodynamic equations numerically to find out spatial and temporal dynamics of spicules. Results. The numerical simulations show that the strong initial pulse may lead to the quasi periodic raising of chromospheric material into the lower corona in the form of spicules. The periodicity results from the nonlinear wake that is formed behind the pulse in the stratified atmosphere. The superposition of raising and falling off plasma portions resembles the time sequence of single and double (sometimes even triple) spicules, which is consistent with observational findings. Conclusions. The two-dimensional rebound shock model may explain the observed speed, width and heights of type I spicules as well as observed multi-structure and bi-directional flows. The model also predicts the appearance of spicules with 3 - 5 min period due to the consecutive shocks.

Authors: K. Murawski, T.V. Zaqarashvili
Projects: None

Publication Status: submitted
Last Modified: 2010-05-02 13:50
Go to main E-Print page  Testing magnetofrictional extrapolation with the Titov-D?moulin model of solar active regions  GeV Particle Acceleration in Solar Flares and Ground Level Enhancement (GLE) Events  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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
Thermal-nonthermal energy partition in solar flares derived from X-ray, EUV, and bolometric observations
From Pseudostreamer Jets to Coronal Mass Ejections: Observations of the Breakout Continuum
Designing a New Coronal Magnetic Field Energy Diagnostic
A Three-Dimensional Velocity of an Erupting Prominence Prior to a Coronal Mass Ejection
Spectroscopic observations of a flare-related coronal jet
Catalog of Solar Failed Eruptions and Other Dynamic Features Registered by SDO/AIA
The non-Fourier image reconstruction method for the STIX instrument
Observation and Modeling of Solar Jets
Challenges and Advances in Modeling of the Solar Atmosphere: A White Paper of Findings and Recommendations
Non-equilibrium Flux Rope Formation by Confined Flares Preceding a Solar Coronal Mass Ejection
Radio Measurements of the Magnetic Field in the Solar Chromosphere and the Corona
A Fast, Simple, Robust Algorithm for Coronal Temperature Reconstruction
Nonlinear Alfvén Wave Model of Stellar Coronae and Winds from the Sun to M dwarfs
Possibility of Diagnostics of the Beginning of Solar Cycle 25 Based on Its Precursors at Mid-Heliolatitudes
The chromospheric component of coronal bright points. Coronal and chromospheric responses to magnetic-flux emergence
Structure of the Solar Atmosphere: A Radio Perspective
Signatures of Cross-sectional Width Modulation in Solar Spicules due to Field-aligned Flows
ALMA and IRIS Observations of the Solar Chromosphere II: Structure and Dynamics of Chromospheric Plage
ALMA and IRIS Observations of the Solar Chromosphere I: an On-Disk Type II Spicule
Evolution of a Steamer-Blowout CME as Observed by Imagers on Parker Solar Probe and the Solar Terrestrial Relations Observatory

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

© 2000-2020 Solar Physics Group - Montana State University