Longitudinal intensity oscillations in coronal loops observed with TRACE I. Overview of Measured Parameters

Details Longitudinal intensity oscillations in coronal loops observed with TRACE I. Overview of Measured Parameters Longitudinal intensity oscillations in coronal loops observed with TRACE I. Overview of Measured Parameters

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002soph..209...61d&link_type=abstract

Solar Physics, v. 209, Issue 1, p. 61-88 (2002).

Physics

98

Scientific paper

In this paper we aim to give a comprehensive overview of geometric and physical properties of longitudinal oscillations in large coronal loops. The 38 examples of propagating disturbances were obtained from the analysis of high cadence, 171 Å TRACE data (JOP 83 and JOP 144). The majority of these outward propagating oscillations are found in the footpoints of large diffuse coronal loop structures, close to active regions. The disturbances travel outward with a propagation speed of the order of v≈122±43 km s-1. The variations in intensity are estimated to be roughly 4.1±1.5% of the background loop brightness. The propagating disturbances are found to be damped very quickly and are typically only detected in the first 8.9±4.4 Mm along the loop. Using a wavelet analysis, periods of the order of 282±93 s are found and the energy flux was estimated as 342±126 erg cm-2 s-1. We found highly filamentary behavior in the lower part of the coronal loops and showed that the intensity oscillations can be present for several consecutive hours, with a more or less constant period. It is evident that the longitudinal oscillations are a widespread, regularly occurring coronal phenomena. A companion paper is devoted to the interpretation and discussion of the results.

Affiliated with

Also associated with

No associations

Rating

Longitudinal intensity oscillations in coronal loops observed with TRACE I. Overview of Measured Parameters 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 Longitudinal intensity oscillations in coronal loops observed with TRACE I. Overview of Measured Parameters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Longitudinal intensity oscillations in coronal loops observed with TRACE I. Overview of Measured Parameters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1128442