Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Liesenborgs, J."'
Clustering algorithms are often used to find subpopulations in exploratory data analysis workflows. Not only the clusters themselves, but also their shape can represent meaningful subpopulations. In this paper, we present FLASC, an algorithm that det
Externí odkaz:
http://arxiv.org/abs/2311.15887
Autor:
Meneghetti, M., Natarajan, P., Coe, D., Contini, E., De Lucia, G., Giocoli, C., Acebron, A., Borgani, S., Bradac, M., Diego, J. M., Hoag, A., Ishigaki, M., Johnson, T. L., Jullo, E., Kawamata, R., Lam, D., Limousin, M., Liesenborgs, J., Oguri, M., Sebesta, K., Sharon, K., Williams, L. L. R., Zitrin, A.
Gravitational lensing by clusters of galaxies offers a powerful probe of their structure and mass distribution. Deriving a lens magnification map for a galaxy cluster is a classic inversion problem and many methods have been developed over the past t
Externí odkaz:
http://arxiv.org/abs/1606.04548
Autor:
Liesenborgs, J., De Rijcke, S.
The inversion of gravitational lens systems is hindered by the fact that multiple mass distributions are often equally compatible with the observed properties of the images. Besides using clear examples to illustrate the effect of the so-called monop
Externí odkaz:
http://arxiv.org/abs/1207.4692
In this article we study the well-known strong lensing system SDSS J1004+4112. Not only does it host a large-separation lensed quasar with measured time-delay information, but several other lensed galaxies have been identified as well. A previously d
Externí odkaz:
http://arxiv.org/abs/0904.2382
The cluster lens Cl 0024+1654 is undoubtedly one of the most beautiful examples of strong gravitational lensing, providing five large images of a single source with well-resolved substructure. Using the information contained in the positions and the
Externí odkaz:
http://arxiv.org/abs/0806.2609
The inversion of a gravitational lens system is, as is well known, plagued by the so-called mass-sheet degeneracy: one can always rescale the density distribution of the lens and add a constant-density mass-sheet such that the, also properly rescaled
Externí odkaz:
http://arxiv.org/abs/0801.4255
Galaxies acting as gravitational lenses are surrounded by, at most, a handful of images. This apparent paucity of information forces one to make the best possible use of what information is available to invert the lens system. In this paper, we explo
Externí odkaz:
http://arxiv.org/abs/0707.2538
Publikováno v:
Mon.Not.Roy.Astron.Soc. 367 (2006) 1209-1216
We present a non-parametric technique to infer the projected-mass distribution of a gravitational lens system with multiple strong-lensed images. The technique involves a dynamic grid in the lens plane on which the mass distribution of the lens is ap
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601124
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