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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

10.1016/j.apergo.2012.07.007

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1573-093X

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Velocities and Temperatures of an Ellerman Bomb an

Authors: Heesu Yang Jongchul Chae EunKyung Lim Hyungmin Park Kyuhyoun Cho Ram Ajor Maurya Donguk Song YeonHan Kim Philip R Goode
Publish Date: 2013/07/26
Volume: 288, Issue: 1, Pages: 39-53
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Abstract

We investigated the velocity and temperature characteristics of an Ellerman bomb EB and its associated features based on observations made with the Fast Imaging Solar Spectrograph FISS and a broadband TiO filter of the 16 meter New Solar Telescope at Big Bear Solar Observatory In the TiO images of the photospheric level we found a granular cell expanding in two opposite directions near the site of the EB When one end of this granule reached the EB site the transverse speed of the tip of the expanding granule rapidly decreased and the EB brightened The wings of the Hα profile of the EB indicated that the EB was blueshifted up to 7 km s−1 About 260 s after the EB brightening a surge was seen in absorption and varied from a blueshift of 20 km s−1 to a redshift of 40 km s−1 seen in the Hα and Ca ii 8542 Å lines From the Doppler absorption width of the two lines determined by applying the cloud model we estimated the mean temperature of the surge material to be about 29000 K and the mean speed of nonthermal motion to be about 11 km s−1 We discuss the physical implications of our results in terms of magnetic reconnection and processes related to itWe greatly appreciate the referee’s constructive comments We are grateful to the BBSO team for their technical support for the observations This work was supported by the National Research Foundation of Korea 20110028102 EK Lim is supported by the “Study of nearEarth effects by CME/HSS” project and basic research funding from KASI YeonHan Kim and EunKyung Lim were supported by the Construction of Korean Space Weather Center the project of KASI and the KASI basic research fund

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  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. Observational Signatures of Impulsively Heated Coronal Loops: Power-Law Distribution of Energies
  10. Transition of the Sunspot Number from Zurich to Brussels in 1980: A Personal Perspective
  11. Very High-Resolution Solar X-Ray Imaging Using Diffractive Optics
  12. Tracking of Coronal White-Light Events by Texture
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  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
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  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
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  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)
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  35. Evidence that Synchrotron Emission from Nonthermal Electrons Produces the Increasing Submillimeter Spectral Component in Solar Flares
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