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Sultanah Alotaibi

Assistant Professor

Faculty

علوم الحاسب والمعلومات
06|T028
المنشورات
مقال فى مجلة
2016
تم النشر فى:

Kernel Regression Estimates of Time Delays between Gravitationally Lensed Fluxes

, Sultanah AL Otaibi . 2016

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 datasets for the same quasar. We develop realistic artificial data sets in order to carry out controlled experiments to test of 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.

نوع عمل المنشور
PHD
رقم المجلد
459
رقم الانشاء
١
مجلة/صحيفة
Monthly Notices of the Royal Astronomical Society
الصفحات
573-584
مزيد من المنشورات
publications

We test whether a more principled treatment of delay estimation in lensed photon streams, compared with the standard kernel estimation method, can have benefits of more accurate (less biased) and/…

بواسطة Sultanah AL Otaibi , Peter Tiňo
2016
publications

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…

بواسطة Sultanah AL Otaibi , Peter Tiňo, Juan C. Cuevas-Tello, Ilya Mandel , Somak Raychaudhury
2016