Hydrodynamic Simulations of Longitudinal Intensity Oscillations Observed in Coronal Loops by TRACE

Details Hydrodynamic Simulations of Longitudinal Intensity Oscillations Observed in Coronal Loops by TRACE Hydrodynamic Simulations of Longitudinal Intensity Oscillations Observed in Coronal Loops by TRACE

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.0406t&link_type=abstract

American Astronomical Society, SPD meeting #34, #04.06; Bulletin of the American Astronomical Society, Vol. 35, p.811

Astronomy and Astrophysics

Astronomy

Scientific paper

Propagating intensity disturbances are often observed by TRACE in large coronal loops located at the perimeters of active regions (e.g., De Moortel et al., 2002, Solar Phys., 209, 61). On average, the disturbances have periods of 280 s, propagation speeds of 120 km s-1, intensity amplitudes of 4%, and surprisingly small damping (detection) lengths of 9000 km. In addition, there is a positive correlation between damping length and period. The preliminary interpretation of these disturbances is that they are rapidly dissipating slow magneto-acoustic waves.
To investigate this interpretation more rigorously, we have performed a series of detailed coronal loop simulations using our 1D hydrodynamic code, ARGOS. We generate waves in the loop by imposing a spatially localized oscillating force at the loop footpoint, using a range of different oscillation periods. We here report on the results of our study and, in particular, whether the damping lengths have the properties observed by TRACE.
This work was supported by NASA and ONR.

Affiliated with

Also associated with

No associations

Rating

Hydrodynamic Simulations of Longitudinal Intensity Oscillations Observed in Coronal Loops by TRACE 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 Hydrodynamic Simulations of Longitudinal Intensity Oscillations Observed in Coronal Loops by TRACE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrodynamic Simulations of Longitudinal Intensity Oscillations Observed in Coronal Loops by TRACE will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-985591