Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparative case study of two methods to assess the eruptive potential
  of selected active regions   Solar eruptive events, like flares and coronal mass ejections, are
characterized by the rapid release of energy that can give rise to emission of
radiation across the entire electromagnetic spectrum and to an abrupt
significant increase in the kinetic energy of particles. These energetic
phenomena can have important effects on the Space Weather conditions and
therefore it is necessary to understand their origin, in particular, what is
the eruptive potential of an active region (AR). In these case studies, we
compare two distinct methods that were used in previous works to investigate
the variations of some characteristic physical parameters during the pre-flare
states of flaring ARs. These methods consider: i) the magnetic flux evolution
and the magnetic helicity accumulation, and ii) the fractal and multi-fractal
properties of flux concentrations in ARs. Our comparative analysis is based on
time series of photospheric data obtained by the Solar Dynamics Observatory
between March 2011 and June 2013. We selected two distinct samples of ARs: one
is distinguished by the occurrence of more energetic M- and X-class flare
events, that may have a rapid effect on not just the near-Earth space, but also
on the terrestrial environment; the second is characterized by no-flares or
having just few C- and B-class flares. We found that the two tested methods
complement each other in their ability to assess the eruptive potentials of ARs
and could be employed to identify ARs prone to flaring activity. Based on the
presented case study, we suggest that using a combination of different methods
may aid to identify more reliably the eruptive potentials of ARs and help to
better understand the pre-flare states.

18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph