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Abstract
Strongly lensed variable quasars can serve as precise cosmological probes, provided that time delays between the image fluxes can be accurately measured. A number of methods have been proposed to address this problem. In this paper, we explore in detail a new approach based on kernel regression estimates, which is able to estimate a single time delay given several data sets for the same quasar. We develop realistic artificial data sets in order to carry out controlled experiments to test the performance of this new approach. We also test our method on real data from strongly lensed quasar Q0957+561 and compare our estimates against existing results.
Original language | English |
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Pages (from-to) | 573-584 |
Journal | Royal Astronomical Society. Monthly Notices |
Volume | 459 |
Issue number | 1 |
Early online date | 7 Mar 2016 |
DOIs | |
Publication status | Published - 11 Jun 2016 |
Keywords
- gravitational lensing: strong
- methods: data analysis
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Dive into the research topics of 'Kernel regression estimates of time delays between gravitationally lensed fluxes'. Together they form a unique fingerprint.Projects
- 1 Finished
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Personalised Medicine through Learning in the Model Space
Tino, P. (Principal Investigator)
Engineering & Physical Science Research Council
1/10/13 → 31/03/17
Project: Research Councils