Hα Line Polarization in the 2B/X4.8 Flare of 2002 July 23

Details Hα Line Polarization in the 2B/X4.8 Flare of 2002 July 23 Hα Line Polarization in the 2B/X4.8 Flare of 2002 July 23

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003chjaa...3..266x&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 3, p. 266-276

Astronomy and Astrophysics

Astrophysics

2

Polarization, Line: Profile, Sun: Flare

Scientific paper

On 2002 July 23, a 2B/X4.8 flare was observed in the Hα line spectropolarimetrically by the Large Solar Vacuum Telescope of Baikal Astrophysical Observatory. Linear polarization of 3%-10% was detected in the Hα line, particularly where the line showed central reversal. The linear polarization is mainly radial on the solar disk and appears at the impulsive phase of the hard X-ray and γ-ray bursts. It is limited to some relatively small regions of the flare. The polarization in a limited small region (˜ 4''-5'') changed its direction within a short period of time (˜10 s)

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