E-Print Archive

There are 4194 abstracts currently viewable.


Advanced Search
Main Page Add New E-Print Submitter
News Help/FAQ About Preferences
Manage Key Phrase
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 

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
HATS: A Ground-Based Telescope to Explore the THz Domain
Failed prominence eruptions near 24 cycle maximum
Properties of Streamer Wave Events Observed During the STEREO Era
Simulating Solar Flare Irradiance with Multithreaded Models of Flare Arcades
Counter-streaming strahls and heat flux dropouts as possible signatures of local particle acceleration in the solar wind
New Star Observations with NuSTAR: Flares from Young Stellar Objects in the ρ Ophiuchi Cloud Complex in Hard X-Rays
Accelerated Electrons Observed Down to <7 keV in a NuSTAR Solar Microflare
Magnetic helicity dissipation and production in an ideal MHD code
Magnetic twist profile inside magnetic clouds derived with a superposed epoch analysis
Properties of ICME-Induced Forbush decreases at Earth and Mars
White-light Emission and Chromospheric Response by an X1.8-class Flare on 2012 October 23
Helicity and winding fluxes as indicators of twisted flux emergence
Magnetic connectivity between the light bridge and penumbra in a sunspot
Can Sub-photospheric Magnetic Reconnection Change the Elemental Composition in the Solar Corona?
Response of SDO/HMI observables to heating of the solar atmosphere by precipitating high-energy electrons
3He-Rich Solar Energetic Particles: Solar Sources
Statistical Study of Hard X-Ray Emitting Electrons Associated with Flare-related Coronal Jets
Rapid Evolution of Type II Spicules Observed in Goode Solar Telescope On-Disk Hα Images
Diagnostics of plasma ionisation using torsional Alfvén waves
Nonequilibrium ionization and ambipolar diffusion in solar magnetic flux emergence processes

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