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Title of Journal: Sol Phys

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Abbravation: Solar Physics

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Publisher

Springer Netherlands

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DOI

10.1007/bf01382368

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ISSN

1573-093X

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Recent Developments of NEMO Detection of EUV Wave

Authors: O Podladchikova A Vuets P Leontiev R A M Van der Linden
Publish Date: 2011/11/29
Volume: 276, Issue: 1-2, Pages: 479-490
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Abstract

Recent developments in space instrumentation for solar observations and increased telemetry have necessitated the creation of advanced pattern recognition tools for different classes of solar events The Extreme Ultraviolet Imaging Telescope EIT onboard the SOHO spacecraft has uncovered a new class of eruptive events on the solar disk which are often identified as signatures of the initiation of coronal mass ejections CMEs The development of an automatic detection tool of these signatures is an important task The Novel EIT Wave Machine Observing NEMO code http//sidcbe/nemo is an operational tool that automatically detects EUV waves using a sequence of EUV images NEMO applies techniques based on the general statistical properties of the underlying physical mechanisms of eruptive events Originally the technique was applied to images taken with the EIT telescope In this work the most recent updates of the NEMO code are presented These updates include calculations of the area of the dimming region a novel clustering technique for the extraction of dimming regions and new criteria to identify eruptive dimmings based on their complex characteristics The efficiency of NEMO has been significantly increased and now permits the extraction of dimming regions observed near the solar limb and also the detection of smallscale events Furthermore the catalogs of solar eruptive events based on the updated NEMO may include a larger number of physical parameters associated with the dimming regions


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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. 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
  13. An Interpretation of a Possible Mechanism for the First Ground-Level Enhancement of Solar Cycle 24
  14. Velocities and Temperatures of an Ellerman Bomb and Its Associated Features
  15. Kink Wave Propagation in Thin Isothermal Magnetic Flux Tubes
  16. Ensemble Modeling of CMEs Using the WSA–ENLIL+Cone Model
  17. A Simple Way to Estimate the Soft X-ray Class of Far-Side Solar Flares Observed with STEREO/EUVI
  18. Multi-spacecraft Observations of CIR-Associated Ion Increases During the Ulysses 2007 Ecliptic Crossing
  19. Numerical Simulation of a Solar Active Region. I: Bastille Day Flare
  20. Magnetic Topology of Active Regions and Coronal Holes: Implications for Coronal Outflows and the Solar Wind
  21. 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
  22. Oscillations in Solar Faculae. III. The Phase Relations Between Chromospheric and Photospheric Line-of-Sight Velocities
  23. A Search for Helioseismic Signature of Emerging Active Regions
  24. Subsecond (0.1 s) Pulsations in the 11 April 2001 Radio Event
  25. Global Heliospheric Parameters and Cosmic-Ray Modulation: An Empirical Relation for the Last Decades
  26. Modeling of EIS Spectrum Drift from Instrumental Temperatures
  27. Preface
  28. Emission of Type II Radio Bursts – Single-Beam Versus Two-Beam Scenario
  29. Historical Heliophysical Series of the Ebro Observatory
  30. Dynamics of an Erupting Arched Magnetic Flux Rope in a Laboratory Plasma Experiment
  31. Eclipses Observed by Large Yield RAdiometer (LYRA) – A Sensitive Tool to Test Models for the Solar Irradiance
  32. The Self-Inversion of the Sign of Circular Polarization in “Halo” Microwave Sources
  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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