E-Print Archive

There are 4172 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
A correlation in the waiting-time distributions of solar flares View all abstracts by submitter

Hugh Hudson   Submitted: 2020-02-08 07:01

In a limited sample of isolated solar active regions, we find that the waiting times between flares may correlate well with flare magnitudes as determined by the Geostationary Operational Environmental Satellites (GOES) soft X-ray fluxes. A 'build-up and release' (BUR) scenario for magnetic energy storage in the solar corona suggests the existence of such a relationship, relating the slowly varying subphotospheric energy sources to the sudden coronal energy releases of flares and coronal mass ejections (CMEs). Substantial amounts of research effort had not previously found any obvious observational evidence for such a BUR process. This has posed a puzzle since coronal magnetic energy storage represents the consensus view of the basic flare mechanism. We have revisited the GOES soft X-ray flare statistics for any evidence of correlations, using two isolated active regions, and have found significant evidence for a 'saturation' correlation. Rather than a 'reset' form of this relaxation, in which the time before a flare correlates with its magnitude, the 'saturation' relationship results in the time after the flare showing the correlation. The observed correlation competes with the 'obscuration' effect of reduced GOES sensitivity following a strong event, by which weaker events can be under-reported systematically. This complicates the observed correlation, and we discuss several approaches to remedy this.

Authors: Hugh Hudson
Projects: None

Publication Status: MNRAS, published, 2020MNRAS.491.4435H
Last Modified: 2020-02-11 09:57
Go to main E-Print page  Cosmic ray interactions in the solar atmosphere  Alternative Models of Zebra Patterns in the Event on June 21, 2011  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
The Distribution of Time Delays Between Nanoflares in Magnetohydrodynamic Simulations
Data-driven MHD Simulation of the Formation and Initiation of a Large-scale Pre-flare Magnetic Flux Rope in Solar Active Region 12371
NVST observations of collision-induced apparent fan-shaped jets
Cosmic ray interactions in the solar atmosphere
A correlation in the waiting-time distributions of solar flares
Alternative Models of Zebra Patterns in the Event on June 21, 2011
Torsional slow-mode oscillations discovered in the magnetic free energy during solar flares
Particle acceleration in coalescent and squashed magnetic islands II. Particle-In-cell approach
The time step constraint in radiation hydrodynamics
Continuous Null-Point Magnetic Reconnection Builds Up a Torus Unstable Magnetic Flux Rope Triggering the X9.3 Flare in Solar Active Region~12673
A Comparison of Flare Forecasting Methods. IV. Evaluating Consecutive-Day Forecasting Patterns
The New 2018 Version of the Meudon Spectroheliograph
Longitudinal filament oscillations enhanced by two C-class flares
Spatio-temporal energy partitioning in a non-thermally dominated two-loop solar flare
Meteospace, a New Instrument for Solar Survey at the Calern Observatory
Correcting the effect of magnetic tongues on the tilt angle of bipolar active regions
Hi-C 2.1 Observations of Jetlet-like Events at Edges of Solar Magnetic Network Lanes
Fine-scale Explosive Energy Release at Sites of Prospective Magnetic Flux Cancellation in the Core of the Solar Active Region Observed by Hi-C 2.1, IRIS, and SDO
Remote coronal dimmings related to a circular-ribbon flare
Formation and Eruption of a Mini-sigmoid Originating in Coronal Hole

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