Observations and Spectral Analyses of Solar Flares

Details Observations and Spectral Analyses of Solar Flares Observations and Spectral Analyses of Solar Flares

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jkas...36s..49d&link_type=abstract

Journal of the Korean Astronomical Society, vol. 36, S1, pp. S49-S54

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3

Line: Profiles, Sun: Flares, Sun: Photosphere

Scientific paper

We introduce the two-dimensional spectral observations of solar flares using the Solar Tower Telescope of Nanjing University, China. In particular, we introduce three typical events and the methods used to analyze the data. (1) The flare of November 11, 1998, which is a limb flare. We derive the temperature and density within the flaring loop using non-LTE calculations. The results show that the loop top may be hotter and denser than other parts of the loop, which may be a result of magnetic reconnection above the loop. (2) The flare of March 10, 2001, which is a white-light flare that shows an emission enhancement at the near infrared continuum. We propose a model of non-thermal electron beam heating plus backwarming to interpret the observations. (3) The flare of September 29, 2002, which shows unusual line asymmetries at one flare kernel. The line asymmetries are caused by an upward moving plasma that is accelerated and heated during the flare development.

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