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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

10.1002/hep.28454

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1573-093X

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Modeling of EIS Spectrum Drift from Instrumental T

Authors: S Kamio H Hara T Watanabe T Fredvik V H Hansteen
Publish Date: 2010/08/04
Volume: 266, Issue: 1, Pages: 209-223
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Abstract

An empirical model has been developed to reproduce the drift of the spectrum recorded by the EIS on Hinode using instrumental temperatures and relative motion of the spacecraft The EIS spectrum shows an artificial drift in wavelength dimension in sync with the revolution of the spacecraft which is caused by temperature variations inside the spectrometer The drift amounts to 70 km s−1 in Doppler velocity and introduces difficulties in velocity measurements An artificial neural network is incorporated to establish a relationship between the instrumental temperatures and the spectral drift This empirical model reproduces observed spectrum shift with an rms error of 44 km s−1 This procedure is robust and applicable to any spectrum obtained with EIS regardless of the observing field In addition spectral curvatures and spatial offset in the north – south direction are determined to compensate for instrumental effects

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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
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  5. High-Energy Emission from a Solar Flare in Hard X-rays and Microwaves
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  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
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  18. Multi-spacecraft Observations of CIR-Associated Ion Increases During the Ulysses 2007 Ecliptic Crossing
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  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
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  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
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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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