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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 226007.0, MPI für Astronomie / Publikationen_mpia
Theoretical modeling of weakly lensed polarized radio sources
Authors:Burns, Christopher R.; Dyer, Charles C.; Kronberg, Philipp P.; Röser, Hermann-Josef
Date of Publication (YYYY-MM-DD):2004
Title of Journal:The Astrophysical Journal
Start Page:672
End Page:681
Review Status:not specified
Audience:Not Specified
Abstract / Description:In this paper we present the theoretical basis
for the modeling of weakly gravitationally
lensed extended sources that are polarized. This
technique has been used in the past to constrain
the mass profiles of galaxies projected against
the jet of the quasar 3C 9. Since then, work has
been done to improve both the measurement and
theoretical modeling of the lensing signal,
which manifests itself as an alignment breaking
between the morphology and the polarization,
parametrized as etaG. To this end, we
present the mathematical derivation of the
theoretical value of etaG as well as
numerical simulations of expected signals in
polarized radio jets. We use the radio jet
sources 3C 9 and QSO 1253+104 as illustrative
examples of the measurement and modeling of the
etaG signal. For 3C 9, we present
constraints on the parameters of the two
intervening lenses and quantify their confidence
intervals. One lens has no measured redshift,
and in this case, we show the dependence of mass
and mass-to-light ratio on assumed redshift.
Free Keywords:Galaxies: Fundamental Parameters; Galaxies:
; Jets; Cosmology: Gravitational Lensing;
; Polarization; Galaxies: Quasars: Individual:
; Alphanumeric: 3C 9; Galaxies: Quasars:
; Individual: Alphanumeric: QSO 1253+104
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
External Affiliations:Swarthmore College, 500 College Avenue,
Swarthmore, PA 19081;
AB(Department of Astronomy and Astrophysics,
University of Toronto, 60 St. George Street,
Toronto, ON M5S 3H8, Canada;
AC(Institute of Geophysics and Planetary Physics,
Los Alamos National Laboratory, MS C305, Los
Alamos, NM 87501;
AD(Max-Planck-Institut fÛr Astronomie,
Heidelberg, Germany;
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi... [ID No:1]
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