E-Print Archive

There are 3775 abstracts currently viewable.


Advanced Search
Main Page Add New E-Print Submitter
News Help/FAQ About Preferences
Manage Key Phrase
Onset of a Large Ejective Solar Eruption from a Typical Coronal-Jet-Base Field Configuration View all abstracts by submitter

Navin Chandra Joshi   Submitted: 2017-07-04 22:04

Utilizing multiwavelength observations and magnetic field data from SDO/AIA, SDO/HMI, GOES and RHESSI, we investigate a large-scale ejective solar eruption of 2014 December 18 from active region NOAA 12241. This event produced a distinctive three-ribbon flare, having two parallel ribbons corresponding to the ribbons of a standard two-ribbon flare, and a larger-scale third quasi-circular ribbon offset from the other two ribbons. There are two components to this eruptive event. First, a flux rope forms above a strong-field polarity-inversion line and erupts and grows as the parallel ribbons turn on, grow, and spread part from that polarity-inversion line; this evolution is consistent with the tether-cutting-reconnection mechanism for eruptions. Second, the eruption of the arcade that has the erupting flux rope in its core under goes magnetic reconnection at the null point of a fan dome that envelops the erupting arcade, resulting in formation of the quasi-circular ribbon; this is consistent with the breakout reconnection mechanism for eruptions. We find that the parallel ribbons begin well before (12 min) circular ribbon onset, indicating that tether-cutting reconnection (or a non-ideal MHD instability) initiated this event, rather than breakout reconnection. The overall setup for this large-scale (circular-ribbon diameter 100000 km) eruption is analogous to that of coronal jets (base size 10000 km), many of which, according to recent findings, result from eruptions of small-scale minifilaments. Thus these findings confirm that eruptions of sheared-core magnetic arcades seated in fan-spine null-point magnetic topology happen on a wide range of size scales on the Sun.

Authors: Navin Chandra Joshi, Alphonse C. Sterling, Ronald L. Moore, Tetsuya Magara, Young-Jae Moon

Publication Status: Accepted for publication in ApJ Journal.
Last Modified: 2017-07-05 12:50
Go to main E-Print page  Quasi-Periodic Radio Bursts Associated with Fast-mode Waves near a Magnetic Null Point  Heating of an erupting prominence associated with a solar coronal mass   ejection on 2012 January 27  Edit Entry  Download Preprint  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
A Statistical Analysis of the Solar Phenomena Associated with Global EUV Waves
Imaging Spectroscopy of Solar Radio Burst Fine Structures
On a small-scale EUV wave: the driving mechanism and the associated oscillating filament
Type III Solar Radio Burst Source Region Splitting Due to a Quasi-Separatrix Layer
On a solar blowout jet: driven mechanism and the formation of cool and hot components
Understanding the Role of Mass-Unloading in Filament Eruptions
Surges and Si IV bursts in the solar atmosphere. Understanding IRIS and SST observations through RMHD experiments
The direct relation between the duration of magnetic reconnection and the evolution of GOES light curves in solar flares
Large-Amplitude Longitudinal Oscillations Triggered by the Merging of Two Solar Filaments: Observations and Magnetic Field Analysis
Statistical Study of Solar White-light Flares and Comparisons with Superflares on Solar-type Stars
Effect of local thermal equilibrium misbalance on long-wavelength slow magnetoacoustic waves
Characteristics of Sustained >100 γ-ray Emission Associated with Solar Flares
Characteristics that Produce White-Light Enhancements in Solar Flares Observed by Hinode/SOT
Solar Energetic Particle Forecasting Algorithms and Associated False Alarms
Magnetic swirls and associated fast magnetoacoustic kink waves in a solar chromospheric flux tube
High-wavenumber solar f-mode strengthening prior to active region formation
Block-induced complex structures building the flare-productive solar active region 12673
Reconstruction of a Large-scale Pre-flare Coronal Current Sheet Associated with an Homologous X-shaped Flare
Comparison of Two Coronal Magnetic Field Models for Reconstructing a Sigmoidal Solar Active Region With Coronal Loops
A Magnetic Bald-Patch Flare in Solar Active Region 11117

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