Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spd....31.0143n&link_type=abstract
American Astronomical Society, SPD Meeting #31, #01.43; Bulletin of the American Astronomical Society, Vol. 32, p.1289
Astronomy and Astrophysics
Astronomy
Scientific paper
X-ray bright points (XBPs) form above magnetic bipoles in the quiet Sun, often at the site of convergence. According to models, the power radiated by the XBP is supplied by magnetic reconnection as flux is transfered from some overlying field into the bipole itself. It follows that the morphology of an XBP depends on both the bipole and on the large-scale overlying field. We demonstrate a novel technique which exploits this fact to map the horizontal component of the Sun's large-scale field using the morphology of observed XBPs. We test this technique using data from SOHO's Michaelson Doppler Interferometer (MDI) and EUV Imaging Telescope (EIT). The resulting measurements are compared to masurements made using standard polarimetric methods, and to models of the Sun's diffuse field. This material is based upon work supported by the National Science Foundation under Grant No. ATM-9733424.
Longcope Dana Warfield
Nelson Jessica L.
Pevtsov Alexander
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