Paper Search Console

Home Search Page About Contact

Journal Title

Title of Journal: Sol Phys

Search In Journal Title:

Abbravation: Solar Physics

Search In Journal Abbravation:

Publisher

Springer Netherlands

Search In Publisher:

DOI

10.1016/j.bbrc.2012.12.081

Search In DOI:

ISSN

1573-093X

Search In ISSN:
Search In Title Of Papers:

Estimating Electric Current Densities in Solar Act

Authors: M S Wheatland
Publish Date: 2015/04/01
Volume: 290, Issue: 4, Pages: 1147-1157
PDF Link

Abstract

Electric currents in solar active regions are thought to provide the energy released via magnetic reconnection in solar flares Vertical electric current densities J z at the photosphere may be estimated from vector magnetogram data subject to substantial uncertainties The values provide boundary conditions for nonlinear forcefree modelling of active region magnetic fields A method is presented for estimating values of J z taking into account uncertainties in vector magnetogram field values and minimising J z2 across the active region The method is demonstrated using the boundary values of the field for a forcefree twisted bipole with the addition of noise at randomly chosen locations

Keywords:

References

.
Search In Abstract Of Papers:
Other Papers In This Journal:
  1. Coronal Mass Ejections from the Same Active Region Cluster: Two Different Perspectives
  2. Gnevyshev Peaks in the CME Average Speeds in Cycle 23
  3. Mapping Solar Wind Streams from the Sun to 1 AU: A Comparison of Techniques
  4. Non-reflective Propagation of Kink Waves in Coronal Magnetic Loops
  5. High-Energy Emission from a Solar Flare in Hard X-rays and Microwaves
  6. Total Solar Irradiance Measurement and Modelling during Cycle 23
  7. Reduced Coronal Emission Above Large Isolated Sunspots
  8. Observational Signatures of Impulsively Heated Coronal Loops: Power-Law Distribution of Energies
  9. Transition of the Sunspot Number from Zurich to Brussels in 1980: A Personal Perspective
  10. Very High-Resolution Solar X-Ray Imaging Using Diffractive Optics
  11. Tracking of Coronal White-Light Events by Texture
  12. An Interpretation of a Possible Mechanism for the First Ground-Level Enhancement of Solar Cycle 24
  13. Velocities and Temperatures of an Ellerman Bomb and Its Associated Features
  14. Kink Wave Propagation in Thin Isothermal Magnetic Flux Tubes
  15. Ensemble Modeling of CMEs Using the WSA–ENLIL+Cone Model
  16. A Simple Way to Estimate the Soft X-ray Class of Far-Side Solar Flares Observed with STEREO/EUVI
  17. Multi-spacecraft Observations of CIR-Associated Ion Increases During the Ulysses 2007 Ecliptic Crossing
  18. Numerical Simulation of a Solar Active Region. I: Bastille Day Flare
  19. Magnetic Topology of Active Regions and Coronal Holes: Implications for Coronal Outflows and the Solar Wind
  20. Variations in Ratio and Correlation of Solar Magnetic Fields in the Fe i 525.02 nm and Na i 589.59 nm Lines According to Mount Wilson Measurements During 2000 – 2012
  21. Oscillations in Solar Faculae. III. The Phase Relations Between Chromospheric and Photospheric Line-of-Sight Velocities
  22. A Search for Helioseismic Signature of Emerging Active Regions
  23. Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event
  24. Global Heliospheric Parameters and Cosmic-Ray Modulation: An Empirical Relation for the Last Decades
  25. Modeling of EIS Spectrum Drift from Instrumental Temperatures
  26. Preface
  27. Emission of Type II Radio Bursts – Single-Beam Versus Two-Beam Scenario
  28. Historical Heliophysical Series of the Ebro Observatory
  29. Dynamics of an Erupting Arched Magnetic Flux Rope in a Laboratory Plasma Experiment
  30. Eclipses Observed by Large Yield RAdiometer (LYRA) – A Sensitive Tool to Test Models for the Solar Irradiance
  31. The Self-Inversion of the Sign of Circular Polarization in “Halo” Microwave Sources
  32. Recent Developments of NEMO: Detection of EUV Wave Characteristics
  33. Design and Ground Calibration of the Helioseismic and Magnetic Imager (HMI) Instrument on the Solar Dynamics Observatory (SDO)
  34. Preface
  35. Evidence that Synchrotron Emission from Nonthermal Electrons Produces the Increasing Submillimeter Spectral Component in Solar Flares
Search Result: