Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Can solar wind viscous drag account for CME deceleration?   The forces acting on solar Coronal Mass Ejections (CMEs) in the
interplanetary medium have been evaluated so far in terms of an empirical drag
coefficient $C_{\rm D} \sim 1$ that quantifies the role of the aerodynamic drag
experienced by a typical CME due to its interaction with the ambient solar
wind. We use a microphysical prescription for viscosity in the turbulent solar
wind to obtain an analytical model for the drag coefficient $C_{\rm D}$. This
is the first physical characterization of the aerodynamic drag experienced by
CMEs. We use this physically motivated prescription for $C_{\rm D}$ in a
simple, 1D model for CME propagation to obtain velocity profiles and travel
times that agree well with observations of deceleration experienced by fast
CMEs.

18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg