Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...431l..17d&link_type=abstract
Astronomy and Astrophysics, Volume 431, Issue 3, 2005, pp.L17-L20
Astronomy and Astrophysics
Astrophysics
10
Sun: Atmosphere, Transition Region, Off-Limb, Line, Broadening, Spicules
Scientific paper
Spectral lines formed in the solar transition region show an increase in the line width, peaking at ≈10 000 km above the limb. Looking at a region off-limb with no obvious spicules, the non-spicule region has a significantly smaller line width above 6000 km compared those taken in a spicule region. We suggest that this increase in line broadening is not due to small scale random motions but rather to unresolved line shifts due to spicules and/or macro-spicules activity.
Doyle Gerry J.
Giannikakis J.
Madjarska M. S.
Xia Li-Dong
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