E-Print Archive

There are 4145 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
Non-Stationary Fast-Driven Self-Organized Criticality in Solar Flares View all abstracts by submitter

Markus J Aschwanden   Submitted: 2019-09-18 13:40

The original concept of self-organized criticality (Bak et al. 1987), applied to solar flare statistics (Lu and Hamilton 1991), assumed a slow-driven and stationary flaring rate, which warrants time scale separation (between flare durations and inter-flare waiting times), it reproduces power-law distributions for flare peak fluxes and durations, but predicts an exponential waiting time distribution. In contrast to these classical assumptions we observe: (i) multiple energy dissipation episodes during most flares, (ii) violation of the principle of time scale separation, (iii) a fast-driven and non-stationary flaring rate, (iv) a power law distribution for waiting times Δ t, with a slope of α Δ t ≈ 2.0, as predicted from the universal reciprocality between mean flaring rates and mean waiting times; and (v) pulses with rise times and decay times of the dissipated magnetic free energy on time scales of 12±6 min, up to 13 times in long-duration (≈ 4 hrs) flares. These results are inconsistent with coronal long-term energy storage (Rosner and Vaiana 1978), but require photospheric-chromospheric current injections into the corona.

Authors: Markus J. Aschwanden
Projects: SDO-AIA

Publication Status: ApJ (subm)
Last Modified: 2019-09-18 23:40
Go to main E-Print page  The Eruption of Outer Spine-like Loops Leading to a Double-stage Circular-ribbon Flare  Global Energetics of Solar Flares. IX. Refined Magnetic Modeling  Edit Entry  Download Preprint  Submitter's Homepage 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
Spectral magnetic helicity of solar active regions between 2006 and 2017
The Effect of Anisotropic Viscosity on the Nonlinear Kink Instability
Solar Cycle Variation of Coronal Temperature, Emission Measure, and Soft X-ray Irradiance Observed with Yohkoh Soft X-ray Telescope
Magnetic Rayleigh-Taylor Instability at a Contact Discontinuity With Oblique Magnetic Field
Spectropolarimetric Insight into Plasma-Sheet Dynamics of a Solar Flare
IRIS Mg II Observations and Non-LTE Modeling of Off-limb Spicules in a Solar Polar Coronal Hole
Measuring relative abundances in the solar corona with optimised linear combinations of spectral lines
Spectral characteristic of mid-term quasi-periodicities in sunspots data
On the Origin of Solar Torsional Oscillations and Extended Solar Cycle
Measuring and modeling the rate of separator reconnection between an emerging and existing active region
A Compact Source for Quasi-Periodic Pulsation in an M-class Solar Flare
Onset Mechanism of M6.5 Solar Flare Observed in Active Region 12371
Lorentz Force Evolution Reveals the Energy Build-up Processes during Recurrent Eruptive Solar Flares
Measurement of the Height of the Chromospheric Network Emission from Solar Dynamics Observatory Images
Submillimeter radiation as the thermal component of the Neupert Effect
A Very Narrow RHESSI X-ray Flare on 25 September 2011
First Detection of Plasmoids from Breakout Reconnection on the Sun
A New Type of Jets in a Polar Limb of Solar Coronal Hole
First imaging spectroscopy observations of solar drift pair bursts
Round-Trip Slipping Magnetic Reconnection Observed in a Fan-Spine Jet

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