Q0045-3337: models including strong lensing by a spiral galaxy
نویسندگان
چکیده
منابع مشابه
Lensing Probabilities for Spectroscopically Selected Galaxy-galaxy Strong Lenses
Spectroscopic galaxy-galaxy lens searches are presently the most prolific method of identifying strong lens systems in large data sets. We study the probabilities associated with these lens searches, namely the probability of identifying a candidate with rogue [O II] emission lines in a galaxy’s spectrum, and the probability that the candidate will show features of strong lensing in follow-up p...
متن کاملGravitational Lensing By Spiral Galaxies
We study gravitational lensing by spiral galaxies, using realistic models consisting of halo, disk, and bulge components combined to produce a flat rotation curve. Proper dynamical normalization of the models is critical because a disk requires less mass than a spherical halo to produce the same rotation curve—a face-on Mestel disk has a lensing cross section only 41% as large as a singular iso...
متن کاملGravitomagnetic corrections to the lensing deflection angle for spiral galaxy models
We investigate the effects of the gravitomagnetic corrections to the usual gravitational lens quantities for a specific lensing mass distribution modelled after spiral galaxies. An exponential disk is embedded into two different spherical halo models where disk and haloes parameters are fixed according to the observed mass to light ratios, galaxy magnitudes and rotation curves. The general expr...
متن کاملConstraining Galaxy Mass Profiles with Strong Gravitational Lensing
Measured time delays between the images of a gravitationally lensed source can lead to a determination of the Hubble constant (Ho), but only if the lensing mass distribution is well understood. The inability to sufficiently constrain galaxy mass models results in large uncertainties on the derived Ho, and severely hampers the cosmological application of this otherwise elegant method. At the sam...
متن کاملStrong and Weak Lensing Constraints on Galaxy Mass Distribution
Gravitational Lensing is a unique tool to constrain the mass distribution of collapsed structures, this is particularly true for galaxies, either on a case by case basis using multiple images of background sources (such as quasars), or statistically using the so called galaxy-galaxy lensing technique. First, I will present the lensing theory, and then discuss the various methods applied to curr...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20066837