Atmospheric Seismology: Observed co-temporal oscillations by CDS and
TRACE and the implicatons for Solar-B instrumentation
R. W. Walsh and M. Marsh
This paper focuses upon a sunspot active region that was imaged with
the CDS wide slit (with high time resolution in He I , O V, Mg IX) and
also co-temporally in TRACE 171. 3-min oscillations were observed above
the sunspot umbra in He I and O V.These oscillations are then observed
to propagate along the active region loops observed in TRACE with both
displaying resonance-like multiple frequencies. It appears clear that
these propagations are the same wave phenomena travelling through the
chromosphere and transition region before dissipating in the corona. As
a consequence of this work, the characteristics of these propagations
will be much better defined when observed with the instrumentation
onboard Solar-B. For example, observations using the EIS slots in
different temperature lines coupled with high time resolution XRT images
will provide the ideal data set to build upon these CDS/TRACE
observations. Simultaneously, direction observations of the source of
these waves will be undertaken using SOT. Typical exposure times and
line lists for EIS oscillation studies will be outlined as well as a
brief discussion on the extent to which Solar-B will further develp our
of understanding of solar atmospheric seismology.
Correspondence
Robert Walsh (rwwalsh@uclan.ac.uk), University of Central Lancashire
presentation
poster