Astronomy and Astrophysics – Astronomy
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.3804x&link_type=abstract
American Astronomical Society, 200th AAS Meeting, #38.04; Bulletin of the American Astronomical Society, Vol. 34, p.699
Astronomy and Astrophysics
Astronomy
Scientific paper
In August/September 1999, we obtained high resolution images of several active regions at the Big Bear Solar Observatory. The data set consists of near-infrared (1560 nm), Ca I (610.3 nm), and broad-band (520 nm) images. In addition, we took magnetograms with the improved digital vector magnetograph (DVMG). All data were obtained quasi-simultaneously, i. e., the temporal evolution of small-scale features is negligible. By using speckle masking technique, we reconstructed images of diffraction limit resolution. In this presentation, we present our preliminary results from this high quality data set focussing on the following three topics: 1. Comparison of contrasts of faculae and pores in three wavelengths regimes which cover three different solar atmopsheric heights. 2. Center-to-limb variation of facular contrasts. 3. The relationship between magnetic field strength and the contrasts of faculae and pores.
Denker Carsten
Jing Ji-liang
Ma Jian
Qiu Jianwei
Spirock Thomas
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