Gravitational lens equation: critical solutions and magnification near folds and cusps
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Gravitational lens equation: critical solutions and magnification near folds and cusps
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| Creator |
Alexandrov, A.N.
Koval, S.M. Zhdanov, V.I. |
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| Description |
We study approximate solutions of the gravitational lens equation and corresponding lens magnification factor near the critical point. This consideration is based on the Taylor expansion of the lens potential in powers of coordinates and an introduction of a proximity parameter characterising the closeness of a point source to the caustic. Second-order corrections to known approximate solutions and magnification are found in case of a general fold point. The first-order corrections near a general cusp are found as well.
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| Date |
2017-06-06T18:27:25Z
2017-06-06T18:27:25Z 2012 |
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| Type |
Article
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| Identifier |
Gravitational lens equation: critical solutions and magnification near folds and cusps / A.N. Alexandrov, S.M. Koval, V.I. Zhdanov // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 184-187. — Бібліогр.: 12 назв. — англ.
2227-1481 http://dspace.nbuv.gov.ua/handle/123456789/119397 |
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| Language |
en
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| Relation |
Advances in Astronomy and Space Physics
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| Publisher |
Головна астрономічна обсерваторія НАН України
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