Non-Gaussian Line Profiles in a Large Solar Flare Observed on 2006 December 13

Details Non-Gaussian Line Profiles in a Large Solar Flare Observed on 2006 December 13 Non-Gaussian Line Profiles in a Large Solar Flare Observed on 2006 December 13

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...679l.155i&link_type=abstract

The Astrophysical Journal, Volume 679, Issue 2, pp. L155-L159.

Astronomy and Astrophysics

Astronomy

14

Sun: Corona, Sun: Flares

Scientific paper

We have studied the characteristics of the non-Gaussian line profile of the Fe XIV 274.20 Å line in and around a flare arcade. We found that broad non-Gaussian line profiles associated with redshifts are observed in the flare arcade. There were two typical types of broad line profiles. One was a distorted line profile caused by multiple flows, and the other was a symmetric line profile without any additional component. We successfully distinguished those two types using higher order statistical moments or M-the additional component contribution-defined in this Letter. The distorted/symmetric broad line profiles were preferentially observed in new/old flare loops, respectively.

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