Hubble diagram at higher redshifts: model independent calibration of quasars

ABSTRACT In this paper, we present a model-independent approach to calibrate the largest quasar sample. Calibrating quasar samples is essentially constraining the parameters of the linear relation between the log  of the ultraviolet (UV) and X-ray luminosities. This calibration allows quasars to be...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2021-10, Vol.507 (1), p.919-926
Hauptverfasser:	Li, Xiaolei, Keeley, Ryan E, Shafieloo, Arman, Zheng, Xiaogang, Cao, Shuo, Biesiada, Marek, Zhu, Zong-Hong
Format:	Artikel
Sprache:	eng
Schlagworte:	Calibration Candles Cold dark matter Conditional probability Gaussian process Hubble diagram Luminosity Parameters Quasars Red shift Regression models Statistical analysis Supernovae
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