Enhanced Emission at the Infrared Continuum in the Flare of 2001 March 10 | Zendy

Ying D. Liu | Zendy; M. D. Ding | Zendy; Cheng Fang | Zendy

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Enhanced Emission at the Infrared Continuum in the Flare of 2001 March 10

Author(s) -

Ying D. Liu,

M. D. Ding,

Cheng Fang

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.639

H-Index - 201

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/338734

Subject(s) - physics , flare , astrophysics , solar flare , radiative transfer , spectral line , emission spectrum , infrared , microwave , astronomy , optics , quantum mechanics

We have obtained a time series of two-dimensional spectra of H? and Ca II ?8542 for a flare on 2001 March 10. This flare showed an enhanced emission at the continuum near the Ca II 8542 ? line. The continuum contrast is estimated to be 3%-5%. This emission lasted about half a minute, showing a good time correlation with the peak of the microwave radio flux at 7.58 GHz. The flare can be classified as a type I white-light flare. A preliminary analysis shows that a nonthermal electron beam cannot directly produce the continuum emission. Heating in the lower atmosphere resulting from the radiative backwarming may account for the continuum enhancement.

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