2017MNRAS.467.1997A

Query : 2017MNRAS.467.1997A

2017MNRAS.467.1997A - Mon. Not. R. Astron. Soc., 467, 1997-2008 (2017/May-2)

Reconstructing the cosmic horseshoe gravitational lens using the singular perturbative approach.

ALARD C.

Abstract (from CDS):

The reconstruction of the cosmic horseshoe gravitational lens using the perturbative method reveals the presence of significant third-order terms. The presence of these higher order terms is apparent in the numerical expansion of the perturbative fields in Fourier series. The expansion of the fields at order 2 produces a higher value of the chi-square. Expanding at order 3 provides a very significant improvement, while order 4 does not bring a significant improvement over order 3. The presence of the order 3 terms is not a consequence of limiting the perturbative expansion to the first order. The amplitude and signs of the third-order terms are recovered by including the contribution of the other group members. This analysis demonstrates that the fine details of the potential of the lens could be recovered independently of any initial assumptions by using the perturbative approach.

Abstract Copyright: © 2017 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): gravitational lensing: strong - methods: numerical - methods: numerical

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 CSWA 1 gLS 11 48 33.10 +19 30 03.2           ~ 90 0

Query : 2017MNRAS.467.1997A

Basic data :
CSWA 1 -- Gravitational Lens System (lens+images)
Other object types: otypes_help 		G ([DAA2009]), gLS (CSWA)
ICRS coord. (ep=J2000) : 		11 48 33.10 +19 30 03.2 (Optical) [ ] D 2009MNRAS.392..104B
FK4 coord. (ep=B1950 eq=1950) : 		11 45 58.02 +19 46 43.8 [ ]
Gal coord. (ep=J2000) : 		237.47808 +73.69230 [ ]
Fluxes (2) :
g 20.8 [~] D 2009MNRAS.392..104B
i 18.2 [~] D 2009MNRAS.392..104B
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Hierarchy : number of linked objects
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Identifiers (3) :
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CSWA 1 NAME Cosmic Horseshoe [DAA2009] SDSS J114833.14+193003.2

References (90 between 1850 and 2026) (Total 90)
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