Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Formation of Coronal Mass Ejection and Post-eruption Flow of Solar Wind
  on 2010 August 18 event   The state of the space environment plays a significant role for forecasting
of geomagnetic storms produced by disturbances of the solar wind (SW). Coronal
mass ejections (CMEs) passing through the heliosphere often have a prolonged
(up to several days) trail with declining speed, which affects propagation of
the subsequent SW streams. We studied the CME and the post-eruption plasma
flows behind the CME rear in the event on 2010 August 18 observed in quadrature
by several space-based instruments. Observations of the eruption in the corona
with EUV telescopes and coronagraphs revealed several discrete outflows
followed by a continuous structureless post-eruption stream. The interplanetary
coronal mass ejection (ICME), associated with this CME, was registered by
PLAsma and SupraThermal Ion Composition (PLASTIC) instrument aboard the Solar
TErrestrial RElations Observatory (STEREO-A) between August 20, 16:14 UT and
August 21, 13:14 UT, after which the SW disturbance was present over 3 days.
Kinematic consideration with the use of the gravitational and Drag-Based models
has shown that the discrete plasma flows can be associated with the ICME,
whereas the post-eruption outflow was arrived in the declining part of the SW
transient. We simulated the Fe-ion charge distributions of the ICME and
post-CME parts of SW using the plasma temperature and density in the ejection
region derived from the Differential Emission Measure analysis. The results
demonstrate that in the studied event the post-ICME trailing region was
associated with the post-eruption flow from the corona, rather then with the
ambient SW entrained by the CME.

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The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
16
The categories of this paper are: stat
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph