Multi-Channel Observations of a Solar Flare

Details Multi-Channel Observations of a Solar Flare Multi-Channel Observations of a Solar Flare

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..405..125h&link_type=abstract

Solar Polarization 5: In Honor of Jan Stenflo ASP Conference Series, Vol. 405, proceedings of the conference held 17-21 Septembe

Astronomy and Astrophysics

Astronomy

Scientific paper

On August 13, 2006 we performed simultaneous observations in Ca IIH, G-band and Fe I 6303 Å of a complex sunspot in NOAA~10904 with the Swedish Solar Telescope (SST) on La Palma, Canary Islands. From spectro-polarimetric scans through the Fe I line with the tunable SOUP filter we computed the full Stokes vectors at each pixel of the field of view. At 8:47 UT a weak flare eruption (GOES class B7.8) was registered in the line core of Ca IIH. We present the changing magnetic field and flow topologies in the underneath penumbral photosphere during the flaring phase. The unmatched spatial resolution of SST observations allows detailed simultaneous mapping of chromospheric and photospheric events.

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