On the occurrence of blue asymmetry in chromospheric flare spectra

Details On the occurrence of blue asymmetry in chromospheric flare spectra On the occurrence of blue asymmetry in chromospheric flare spectra

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994soph..152..393h&link_type=abstract

Solar Physics, vol. 152, no. 2, p. 393-408

Astronomy and Astrophysics

Astronomy

30

Chromosphere, H Alpha Line, Light (Visible Radiation), Line Spectra, Mathematical Models, Microwave Emission, Radio Astronomy, Radio Spectra, Solar Flares, Solar Spectra, Solar X-Rays, Spectrum Analysis, X Ray Astronomy, X Ray Spectra, Balmer Series, Charge Coupled Devices, Filtergrams, Goes Satellites, Solar Corona, Spectrographs

Scientific paper

We present observations of optical spectra of a flare in which blue line asymmetry was seen for more than 4 min close to the flare onset. The maximum blue asymmetry coincided with the maximum of a hard X-ray and microwave burst. We discuss possible interpretations of the blue asymmetry and conclude that the most plausible one is electron-beam heating with return current. Although this process predicts downflows in the lower transition region and upper chromosphere, its ultimate effect on the line profiles can be blue asymmetry: the upper layers moving away from us absorb the radiation of the red peak thus lowering its intensity in comparison to the blue one.

Affiliated with

Also associated with

No associations

Rating

On the occurrence of blue asymmetry in chromospheric flare spectra does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the occurrence of blue asymmetry in chromospheric flare spectra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the occurrence of blue asymmetry in chromospheric flare spectra will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-824206