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Article: Gravitational lensing by a smoothly variable three-dimensional mass distribution

TitleGravitational lensing by a smoothly variable three-dimensional mass distribution
Authors
KeywordsGravitational Lenses
Issue Date1990
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 1990, v. 357 n. 1, p. 32-37 How to Cite?
AbstractA smooth three-dimensional mass distribution is approximated by a model with multiple thin screens, with surface mass density varying smoothly on each screen. We find that 16 screens are sufficient for a good approximation of the three-dimensional distribution of matter. We also find that in this multiscreen model the distribution of amplifications of single images is dominated by the convergence due to matter within the beam. The shear caused by matter outside the beam has no significant effect. This finding considerably simplifies the modeling of lensing by a smooth three-dimensional mass distribution by effectively reducing the problem to one dimension, as it is sufficient to know the mass distribution along a straight light ray.
Persistent Identifierhttp://hdl.handle.net/10722/150939
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369

 

DC FieldValueLanguage
dc.contributor.authorLee, MHen_US
dc.contributor.authorPaczyński, Ben_US
dc.date.accessioned2012-06-26T06:15:05Z-
dc.date.available2012-06-26T06:15:05Z-
dc.date.issued1990en_US
dc.identifier.citationAstrophysical Journal Letters, 1990, v. 357 n. 1, p. 32-37en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/150939-
dc.description.abstractA smooth three-dimensional mass distribution is approximated by a model with multiple thin screens, with surface mass density varying smoothly on each screen. We find that 16 screens are sufficient for a good approximation of the three-dimensional distribution of matter. We also find that in this multiscreen model the distribution of amplifications of single images is dominated by the convergence due to matter within the beam. The shear caused by matter outside the beam has no significant effect. This finding considerably simplifies the modeling of lensing by a smooth three-dimensional mass distribution by effectively reducing the problem to one dimension, as it is sufficient to know the mass distribution along a straight light ray.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_US
dc.relation.ispartofAstrophysical Journal Lettersen_US
dc.subjectGravitational Lensesen_US
dc.titleGravitational lensing by a smoothly variable three-dimensional mass distributionen_US
dc.typeArticleen_US
dc.identifier.emailLee, MH:mhlee@hku.hken_US
dc.identifier.authorityLee, MH=rp00724en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0009174948en_US
dc.identifier.volume357en_US
dc.identifier.issue1en_US
dc.identifier.spage32en_US
dc.identifier.epage37en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLee, MH=7409119699en_US
dc.identifier.scopusauthoridPaczyński, B=7006739107en_US

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