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Green’s function of compressible Petschek-type magnetic reconnection
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10.1063/1.2193088
/content/aip/journal/pop/13/5/10.1063/1.2193088
http://aip.metastore.ingenta.com/content/aip/journal/pop/13/5/10.1063/1.2193088

Figures

Image of FIG. 1.
FIG. 1.

The Cagniard contour for and in the complex plane. The cross indicates the endpoint of the integration .

Image of FIG. 2.
FIG. 2.

The density distribution at . Seen are different wave and shock structures, namely the tube wave from branch point 3 , the slow waves from the upper and the lower half plane (, ), as well as the slow shocks and Alfvén discontinuities from both half planes .

Image of FIG. 3.
FIG. 3.

(Color) The density distribution in the plane. The first front is a fast wave arising from . Also clearly visible are contribution from the Alfvén discontinuities, the slow shocks, the slow waves, and from the tube waves (which all coincide for the upper and the lower half plane in the symmetric case).

Image of FIG. 4.
FIG. 4.

The density distribution at for asymmetric magnetic fields and low plasma in the upper half plane. Seen are different wave and shock structures, namely the tube waves from both half planes , the slow wave from the upper and the fast wave from the lower half plane , the slow shocks and Alfvén discontinuity from both half planes , as well as the surface wave from ().

Image of FIG. 5.
FIG. 5.

(Color) Variations of the plasma density (upper left panel), the total pressure (upper right panel), the component of the magnetic field (lower left panel), and the component of the velocity (lower right panel) for the low plasma case.

Image of FIG. 6.
FIG. 6.

The shock structure according to the solution of the Riemann problem. The dashed lines indicate the location of the separations , while the solid lines show the Alfvén waves , and the slow shocks , while the dotted line indicates the contact discontinuity ().

Image of FIG. 7.
FIG. 7.

Density variations in the upper half space for in the high case. Clearly visible is the fact that for a high plasma the contribution from BP1 and BP2 give a fast wave . It is followed by the other perturbations as listed in Table III.

Image of FIG. 8.
FIG. 8.

(Color) The density distribution in the plane. The first front is a fast wave arising from and from the BP2. Also clearly visible are the contributions from the Alfvén discontinuities, the slow shocks, the surface and the tube wave.

Image of FIG. 9.
FIG. 9.

Density variations in the upper half space for in the case where side waves arise.

Image of FIG. 10.
FIG. 10.

(Color) The density distribution in the plane. The first side wave arises from the Alfvén discontinuity, the second from the slow shock, the third one from the slow wave. The fourth side wave, which comes from the tube wave is separated from the other side waves by a lagoon. After the four side waves, the wave structure is similar to the previous examples.

Tables

Generic image for table
Table I.

Location and velocity of the wave and shock structures found for the case of symmetric, antiparallel magnetic fields (compare with Fig. 2).

Generic image for table
Table II.

The different wave structures for the low case with corresponding propagation velocities and the location at for the upper half plane (compare with Fig. 4).

Generic image for table
Table III.

The different wave structures for the high case with corresponding propagation velocities and the location at for the upper half plane (compare with Fig. 7).

Generic image for table
Table IV.

The different wave structures with corresponding propagation velocities and the location at for the upper half plane (compare with Fig. 9) for the side wave case.

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/content/aip/journal/pop/13/5/10.1063/1.2193088
2006-05-10
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Green’s function of compressible Petschek-type magnetic reconnection
http://aip.metastore.ingenta.com/content/aip/journal/pop/13/5/10.1063/1.2193088
10.1063/1.2193088
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