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Title of Journal: Sol Phys

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Abbravation: Solar Physics

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Springer Netherlands

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DOI

10.1007/s00117-015-0023-4

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1573-093X

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Observational Signatures of Impulsively Heated Cor

Authors: Y Taroyan R Erdélyi S J Bradshaw
Publish Date: 2011/01/19
Volume: 269, Issue: 2, Pages: 295-307
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Abstract

It has been established that small scale heating events known as nanoflares are important for solar coronal heating if the powerlaw distribution of their energies has a slope α steeper than −2 α−2 Forward modeling of impulsively heated coronal loops with a set of prescribed powerlaw indices α is performed The powerlaw distribution is incorporated into the governing equations of motion through an impulsive heating term The results are converted into synthetic Hinode/EIS observations in the 40″ imaging mode using a selection of spectral lines formed at various temperatures It is shown that the intensities of the emission lines and their standard deviations are sensitive to changes in α A method based on a combination of observations and forward modeling is proposed for determining whether the heating in a particular case is due to small or large scale events The method is extended and applied to a loop structure that consists of multiple strands


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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. Estimating Electric Current Densities in Solar Active Regions
  7. Total Solar Irradiance Measurement and Modelling during Cycle 23
  8. Reduced Coronal Emission Above Large Isolated Sunspots
  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

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