Advanced search
1 file | 6.02 MB

Non-parametric strong lens inversion of SDSS J1004+4112

Author
Organization
Abstract
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 developed strong lens inversion procedure that is designed to handle a wide variety of constraints is applied to this lensing system and compared to results reported in other works. Without the inclusion of a tentative central image of one of the galaxies as a constraint, we find that the model recovered by the other constraints indeed predicts an image at that location. An inversion which includes the central image provides tighter constraints on the shape of the central part of the mass map. The resulting model also predicts a central image of a second galaxy where indeed an object is visible in the available Advanced Camera for Surveys images. We find masses of 2.5 × 1013 and 6.1 × 1013Msolar within a radius of 60 and 110 kpc, respectively, confirming the results from other authors. The resulting mass map is compatible with an elliptical generalization of a projected NFW profile, with rs = 58+21-13 arcsec and cvir = 3.91 +/- 0.74. The orientation of the elliptical NFW profile closely follows the orientation of the central cluster galaxy and the overall distribution of cluster members.
Keywords
gravitational lensing, QUASAR SDSS-J1004+4112, galaxies: clusters: individual: SDSS J1004+4112, dark matter, methods: data analysis, GENETIC ALGORITHM, TIME-DELAY, 5TH IMAGE, SEPARATION, CLUSTER, SYSTEMS, DISCOVERY, EVOLUTION, GALAXIES

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 6.02 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Liesenborgs, Jori, Sven De Rijcke, Herwig Dejonghe, and Philippe Bekaert. 2009. “Non-parametric Strong Lens Inversion of SDSS J1004+4112.” Monthly Notices of the Royal Astronomical Society 397 (1): 341–349.
APA
Liesenborgs, J., De Rijcke, S., Dejonghe, H., & Bekaert, P. (2009). Non-parametric strong lens inversion of SDSS J1004+4112. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 397(1), 341–349.
Vancouver
1.
Liesenborgs J, De Rijcke S, Dejonghe H, Bekaert P. Non-parametric strong lens inversion of SDSS J1004+4112. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2009;397(1):341–9.
MLA
Liesenborgs, Jori, Sven De Rijcke, Herwig Dejonghe, et al. “Non-parametric Strong Lens Inversion of SDSS J1004+4112.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 397.1 (2009): 341–349. Print.
@article{954273,
  abstract     = {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 developed strong lens inversion procedure that is designed to handle a wide variety of constraints is applied to this lensing system and compared to results reported in other works. Without the inclusion of a tentative central image of one of the galaxies as a constraint, we find that the model recovered by the other constraints indeed predicts an image at that location. An inversion which includes the central image provides tighter constraints on the shape of the central part of the mass map. The resulting model also predicts a central image of a second galaxy where indeed an object is visible in the available Advanced Camera for Surveys images. We find masses of 2.5 {\texttimes} 1013 and 6.1 {\texttimes} 1013Msolar within a radius of 60 and 110 kpc, respectively, confirming the results from other authors. The resulting mass map is compatible with an elliptical generalization of a projected NFW profile, with rs = 58+21-13 arcsec and cvir = 3.91 +/- 0.74. The orientation of the elliptical NFW profile closely follows the orientation of the central cluster galaxy and the overall distribution of cluster members.},
  author       = {Liesenborgs, Jori and De Rijcke, Sven and Dejonghe, Herwig and Bekaert, Philippe},
  issn         = {0035-8711},
  journal      = {MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
  language     = {eng},
  number       = {1},
  pages        = {341--349},
  title        = {Non-parametric strong lens inversion of SDSS J1004+4112},
  url          = {http://dx.doi.org/10.1111/j.1365-2966.2009.14912.x},
  volume       = {397},
  year         = {2009},
}

Altmetric
View in Altmetric
Web of Science
Times cited: