Initial Results On Active Region Loop Morphology From Hinode EIS And XRT.

Details Initial Results On Active Region Loop Morphology From Hinode EIS And XRT. Initial Results On Active Region Loop Morphology From Hinode EIS And XRT.

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.6307b&link_type=abstract

American Astronomical Society Meeting 210, #63.07; Bulletin of the American Astronomical Society, Vol. 39, p.172

Astronomy and Astrophysics

Astronomy

Scientific paper

Theoretically, magnetic fields are expected to expand as they rise above the photosphere and into the corona, so the apparent uniform cross-sections of active region coronal loops are difficult to understand. There has been some debate in the community as to whether coronal loops really have constant cross-sections (as suggested by TRACE and SXT), or are actually unresolved and composed of expanding threads within the constant cross-section envelopes. Furthermore, loop expansion is critical to the success or failure of hydrostatic models in reproducing the observed intensities and morphology in active region loops, bright points, and the full Sun. Hinode EIS and XRT provide unprecedented spatial resolution at high temperatures that can be used to reexamine the morphology of active region loops and provide new insights. Here we present initial results from our study of active region loop widths with EIS and XRT.

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