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On-Orbit Sensitivity Evolution of the EUV Imaging Spectrometer on Hinode View all abstracts by submitter

John Mariska   Submitted: 2012-11-20 09:27

Since its launch on 22 September 2006, the EUV Imaging Spectrometer onboard the Hinode satellite has exhibited a gradual decay in sensitivity. Using spectroheliograms taken in the Fe VIII 185.21 Angstrom and Si VII 275.35 Angstrom emission lines in quiet regions near Sun center we characterize that decay. For the period from December 2006 to March 2012, the decline in the sensitivity can be characterized as an exponential decay with an average time constant of 7358 ? 1030 days (20.2 ? 2.8 years). Emission lines formed at temperatures >106.1 K in the quiet-Sun data exhibit solar-cycle effects.

Authors: J. T. Mariska
Projects: Hinode/EIS

Publication Status: Solar Physics, in press
Last Modified: 2012-11-20 20:24
Go to main E-Print page  Field line reconstruction with magneto-acoustic cut-off frequency above sunspots  Are Decaying Magnetic Fields Above Active Regions Related to Coronal  Mass Ejection Onset?  Edit Entry  Download Preprint  Delete Entry 

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