Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Windsock memory conditioned RAM (Co-Ram) pressure effect: forced
  reconnection in the Earth's magnetotail   Magnetic reconnection (MR) is a key physical concept explaining the addition
of magnetic flux to the magnetotail and closed flux lines back-motion to the
dayside magnetosphere. This scenario elaborated by \citet{dung63}, can explain
many aspects of solar wind-magnetosphere interaction processes, including
substorms. However, neither the Dungey model nor its numerous modifications
were able to explain fully the onset conditions for MR in the tail. In this
paper, we introduce new onset conditions for forced MR in the tail. We call our
scenario the "windsock memory conditioned ram pressure effect". Our
non-flux-transfer associated forcing is introduced by a combination of
large-scale windsock motions exhibiting memory effects and solar wind dynamic
pressure actions on the nightside magnetopause during northward oriented IMF.
Using global MHD GUMICS-4 simulation results, upstream data from WIND,
magnetosheath data from Cluster-1 and distant-tail data from the two-probe
ARTEMIS mission, we show that the simultaneous occurrence of vertical windsock
motions of the magnetotail and enhanced solar wind dynamic pressure introduces
strong nightside disturbances, including enhanced electric fields and
persistent vertical cross-tail shear flows. These perturbations, associated
with a stream interaction region in the solar wind, drive MR in the tail during
episodes of northward oriented interplanetary magnetic field (IMF). We detect
MR indirectly, observing plasmoids in the tail and ground based signatures of
Earthward moving fast flows. We also consider the application to solar system
planets and close-in exoplanets, where the proposed scenario can elucidate some
new aspects of solar/stellar wind - magnetosphere interactions.

29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs