Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole
We study two interesting features of a black hole with an ordinary as well as phantom global monopole. Firstly, we investigate null geodesics which imply unstable orbital motion of particles for both cases. Secondly, we evaluate deflection angle in strong field regime. We then find Einstein rings, m...
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| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2015/854264 |
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| author | M. Sharif Sehrish Iftikhar |
| author_facet | M. Sharif Sehrish Iftikhar |
| author_sort | M. Sharif |
| collection | DOAJ |
| description | We study two interesting features of a black hole with an ordinary as well as phantom global monopole. Firstly, we investigate null geodesics which imply unstable orbital motion of particles for both cases. Secondly, we evaluate deflection angle in strong field regime. We then find Einstein rings, magnifications, and observables of the relativistic images for supermassive black hole at the center of galaxy NGC4486B. We also examine time delays for different galaxies and present our results numerically. It is found that the deflection angle for ordinary/phantom global monopole is greater/smaller than that of Schwarzschild black hole. In strong field limit, the remaining properties of these black holes are quite different from the Schwarzschild black hole. |
| format | Article |
| id | doaj-art-c56f258cc6b540b8ad7a64521e081297 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-c56f258cc6b540b8ad7a64521e0812972025-02-03T05:46:35ZengWileyAdvances in High Energy Physics1687-73571687-73652015-01-01201510.1155/2015/854264854264Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global MonopoleM. Sharif0Sehrish Iftikhar1Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, PakistanDepartment of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, PakistanWe study two interesting features of a black hole with an ordinary as well as phantom global monopole. Firstly, we investigate null geodesics which imply unstable orbital motion of particles for both cases. Secondly, we evaluate deflection angle in strong field regime. We then find Einstein rings, magnifications, and observables of the relativistic images for supermassive black hole at the center of galaxy NGC4486B. We also examine time delays for different galaxies and present our results numerically. It is found that the deflection angle for ordinary/phantom global monopole is greater/smaller than that of Schwarzschild black hole. In strong field limit, the remaining properties of these black holes are quite different from the Schwarzschild black hole.http://dx.doi.org/10.1155/2015/854264 |
| spellingShingle | M. Sharif Sehrish Iftikhar Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole Advances in High Energy Physics |
| title | Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole |
| title_full | Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole |
| title_fullStr | Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole |
| title_full_unstemmed | Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole |
| title_short | Null Geodesics and Strong Field Gravitational Lensing of Black Hole with Global Monopole |
| title_sort | null geodesics and strong field gravitational lensing of black hole with global monopole |
| url | http://dx.doi.org/10.1155/2015/854264 |
| work_keys_str_mv | AT msharif nullgeodesicsandstrongfieldgravitationallensingofblackholewithglobalmonopole AT sehrishiftikhar nullgeodesicsandstrongfieldgravitationallensingofblackholewithglobalmonopole |