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A Morse-theoretical analysis of gravitational lensing by a Kerr-Newman black hole
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10.1063/1.2188209
/content/aip/journal/jmp/47/4/10.1063/1.2188209
http://aip.metastore.ingenta.com/content/aip/journal/jmp/47/4/10.1063/1.2188209
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The surfaces (top) and (bottom) are drawn here for the case and . The picture shows the (half-)plane , with on the horizontal and on the vertical axis. The spheres of radius and are indicated by dashed lines; they meet the equatorial plane in the photon circles. The boundary of the ergosphere coincides with the surface and is indicated in the bottom figure by a thick line; it meets the equatorial plane at .

Image of FIG. 2.
FIG. 2.

The regions , , and defined in Proposition 1 are shown here for the case and . Again, as in Fig. 1, we plot on the horizontal and on the vertical axis. Some of the spherical lightlike geodesics that fill the photon region are indicated. meets the equatorial plane in the photon circles at and and the axis at radius given by . This picture can also be found as Fig. 21 in the online article (Ref. 29).

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/content/aip/journal/jmp/47/4/10.1063/1.2188209
2006-04-14
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A Morse-theoretical analysis of gravitational lensing by a Kerr-Newman black hole
http://aip.metastore.ingenta.com/content/aip/journal/jmp/47/4/10.1063/1.2188209
10.1063/1.2188209
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