Statistics of Extreme Gravitational Lensing Events. II. The Finite Shear Case | Zendy

Yun Wang | Zendy; Edwin L. Turner | Zendy

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Statistics of Extreme Gravitational Lensing Events. II. The Finite Shear Case

Author(s) -

Yun Wang,

Edwin L. Turner

Publication year - 1997

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/304115

Subject(s) - gravitational lens , physics , lens (geology) , shear (geology) , population , weak gravitational lensing , radiation , astrophysics , gravitational lensing formalism , gravitation , optics , classical mechanics , geology , galaxy , petrology , demography , redshift , sociology

We consider an astrophysical system with a population of sources and apopulation of lenses. For each pair of source and lens, there is a thin on-axistube-like volume behind the lens in which the radiation flux from the source isgreatly increased due to gravitational lensing. Any objects (such as dustgrains) which pass through such a thin tube will experience strong bursts ofradiation, i.e., Extreme Gravitational Lensing Events (EGLE). We study thephysics and statistics of EGLE for the case in which the shear is larger orcomparable to the finite source size. We find that the presence of shear hasonly a small effect on the EGLE statistics.Comment: 17 pages including 3 figures, using AAS LATEX macros v4.0. Submitted to Ap

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