Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-10-13
Astrophysical Journal Letters 706 (2009) L80-L85
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
Accepted to appear ApJL, 5 pages. Color figures and supporting movies can be found at http://download.hao.ucar.edu/pub/mscott/
Scientific paper
We present results of a multi-wavelength study of episodic plasma injection into the corona of AR 10942. We exploit long-exposure images of the Hinode and Transition Region and Coronal Explorer (TRACE) spacecraft to study the properties of faint, episodic, "blobs" of plasma that are propelled upward along coronal loops that are rooted in the AR plage. We find that the source location and characteristic velocities of these episodic upflow events match those expected from recent spectroscopic observations of faint coronal upflows that are associated with upper chromospheric activity, in the form of highly dynamic spicules. The analysis presented ties together observations from coronal and chromospheric spectrographs and imagers, providing more evidence of the connection of discrete coronal mass heating and injection events with their source, dynamic spicules, in the chromosphere.
de Pontieu Bart
McIntosh Scott W.
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