The Nature and Time-variability of TRACE Moss

Details The Nature and Time-variability of TRACE Moss The Nature and Time-variability of TRACE Moss

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spd....37.0102l&link_type=abstract

American Astronomical Society, SPD meeting #37, #1.02; Bulletin of the American Astronomical Society, Vol. 38, p.215

Astronomy and Astrophysics

Astronomy

Scientific paper

The nature of coronal "moss" seen in Transition Region and Coronal Explorer (TRACE) images is investigated using a time series set of SOHO Coronal Diagnostic Spectrometer (CDS) and TRACE measurements of a moss region seen face-on. Spectral line fluxes obtained at different times are used to construct differential emission measure distribution snapshots in the moss line-of-sight, paying special attention to subtraction of background from unassociated structures. The results are used to investigate the variability of the moss itself and of the purported overlying hot loops whose footpoints Berger et al (1999) and Fletcher & De Pontieu (1999) have proposed as the origin of the moss emission. We conclude by discussing whether or not the loop footpoint nature of moss is compatible with our observations.

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