2001A&A...379...72C


Query : 2001A&A...379...72C

2001A&A...379...72C - Astronomy and Astrophysics, volume 379, 72-81 (2001/11-3)

Gravitational lensing potential reconstruction in quadruply imaged systems.

CARDONE V.F., CAPOZZIELLO S., RE V. and PIEDIPALUMBO E.

Abstract (from CDS):

We develop a semi-analytical method to reconstruct the lensing potential in quadruply imaged gravitational lens systems. Assuming that the potential belongs to a broad class of boxy non-elliptical models, we show how it is possible to write down a system of equations which can be numerically solved to recover the potential parameters directly from image positions and using physical constraints. We also describe a code developed to search for solutions of the system previously found and test it on simulated cases. Finally, we apply the method to the quadruple lens PG1115+080 which allows us to get also an estimate of the Hubble constant H0 from the measured time delay as H0=56–11+12km/s/Mpc.

Abstract Copyright:

Journal keyword(s): gravitational lensing - cosmology: distance scale - galaxies: structure - quasars: individual: PG 1115+080

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 8C 0958+561 QSO 10 01 20.6915852239 +55 53 55.595776916   17.16 16.95     ~ 706 3
2 QSO B1115+080A QSO 11 18 16.951 +07 45 58.23   16.61 16.44     ~ 640 2

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2021.08.03-07:23:46

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