Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discovery of Spatial Periodicities in a Coronal Loop using Automated
  Edge-Tracking Algorithms   A new method for automated coronal loop tracking, in both spatial and
temporal domains, is presented. Applying this technique to TRACE data, obtained
using the 171 Angstrom filter on 1998 July 14, we detect a coronal loop
undergoing a 270s kink-mode oscillation, as previously found by Aschwanden et
al. (1999). However, we also detect flare-induced, and previously unnoticed,
spatial periodicities on a scale of 3500km, which occur along the coronal-loop
edge. Furthermore, we establish a reduction in oscillatory power for these
spatial periodicities of 45% over a 222s interval. We relate the reduction in
detected oscillatory power to the physical damping of these loop-top
oscillations.

1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess