Electron Temperature and Emission Measure Determinations of Very Faint Solar Flares

Details Electron Temperature and Emission Measure Determinations of Very Faint Solar Flares Electron Temperature and Emission Measure Determinations of Very Faint Solar Flares

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...461..465f&link_type=abstract

Astrophysical Journal v.461, p.465

Astronomy and Astrophysics

Astronomy

11

Sun: Flares, Sun: X-Rays, Gamma Rays

Scientific paper

We have studied 28 flares in the X-ray magnitude range of A2-A9 using high-resolution Bragg crystal spectrometer data obtained from instrumentation flown on the Yohkoh spacecraft. Flares in the A-class category can be detected in spectral lines of He-like ions formed at low temperatures. Their average temperature is approximately 5 x 106 K, and their emission measure as determined from the S XV resonance line near 5 Å varies between 2 x 1046 and 1 x 1048 cm-3.

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