First Results from the EUV SpectroPhotometer (ESP) on the SDO Extreme Ultraviolet Variability Experiment (EVE)

Details First Results from the EUV SpectroPhotometer (ESP) on the SDO Extreme Ultraviolet Variability Experiment (EVE) First Results from the EUV SpectroPhotometer (ESP) on the SDO Extreme Ultraviolet Variability Experiment (EVE)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh11a1595d&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH11A-1595

Astronomy and Astrophysics

Astrophysics

[7538] Solar Physics, Astrophysics, And Astronomy / Solar Irradiance

Scientific paper

First results from SDO/EVE/ESP in four spectral channels are presented. These results include solar irradiance measurements in the channels centered on 3.5, 17, 26, and 30.4 nm. The Quad Diode (QD) channels (0.1 - 7.0 nm) can be used as a solar flare detector that has a large dynamic range (covering B to X-class flares) and provides information on flare location. The QD may also provide a low-latency proxy for GOES-14 XRS-B (0.1-0.8 nm) irradiance. This proxy is important for Space Weather operations during the periods of solar eclipses observed by GOES-14. The ESP 30.4 nm channel will be used as a proxy for the long-term SOHO/SEM first-order 30.4 nm absolute EUV irradiance, which is of significant value to solar and Earth’s atmosphere and ionosphere physicists. ESP channels are providing high-cadence (0.25 sec) solar EUV irradiance measurements that are important for studying spectral variability and short timescale processes during the impulsive phase of solar flares.

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