Physics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsp41c..03u&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #SP41C-03
Physics
7509 Corona, 7524 Magnetic Fields, 7546 Transition Region, 7549 Ultraviolet Emissions
Scientific paper
The EUV Imaging Spectrometer (EIS) on board Hinode is providing unprecedented diagnostics of solar coronal plasmas. One of its less exploited capabilities is the ability to make instantaneous spectrally pure images with the 40'' slot. Simultaneous transition region (Mg VI, Mg VII, Si VII) and coronal (Fe XI - Fe XVI) images allow us to observe active region loops as we have not been able to before, given the spatial resolution (1arcsec pixels), cadence (70s) and, most importantly, the broad temperature coverage. Under this scrutiny two distinct populations of active region transition region loops can be differentiated: core loops that result from the cooling of several million degree plasma; and fan structures with their main contribution in the 0.6-1 MK temperature range. These results suggest that the cores of active regions are not as steady as commonly assumed and reinforce the idea of coexistance of differentiated loop populations within the active region topology. We present the properties of the loops and we discuss the implications that these new observations have for current transition region and coronal models.
Brooks David H.
Ugarte-Urra Ignacio
Warren Harry P.
No associations
LandOfFree
EIS: a new view of active region transition region loops does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with EIS: a new view of active region transition region loops, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and EIS: a new view of active region transition region loops will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1402587