Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.1213r&link_type=abstract
American Astronomical Society, SPD meeting #40, #12.13; Bulletin of the American Astronomical Society, Vol. 41, p.830
Astronomy and Astrophysics
Astronomy
Scientific paper
The temperature response of an EUV imager provides the user with the temperature range over which the instrument or passband is sensitive. These response curves appear to be highly peaked, implying a narrow range of temperature sensitivity. However, in the past, these response functions have been calculated using quiet sun spectra or constant density, assumptions which are relevant only in specific circumstances. The multithermal response of the EUV imagers - TRACE, SOHO/EIT, STEREO/EUVI, PROBA2/SWAP and SDO/AIA were investigated. It was found that a highly peaked response curve is only appropriate when looking at cooler material. However, studying higher temperature emission from e.g. active regions and flares produces a very broad, almost flat response between 105 and 107 K for all instruments. CLR is supported by an SPD studentship and the ESA/Prodex grant administered by Enterprise Ireland.
Bloomfield S.
Gallagher Peter
Raftery Claire
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