%0 Generic %1 lenart2022biasfree %A Lenart, Aleksander Łukasz %A Bargiacchi, Giada %A Dainotti, Maria Giovanna %A Nagataki, Shigehiro %A Capozziello, Salvatore %D 2022 %K library %T A bias-free cosmological analysis with quasars alleviating $H_0$ tension %U http://arxiv.org/abs/2211.10785 %X Cosmological models and their parameters are widely debated because of theoretical and observational mismatches of the standard cosmological model, especially the current discrepancy between the value of the Hubble constant, $H_0$, obtained by Type Ia supernovae (SNe Ia), and the Cosmic Microwave Background Radiation (CMB). Thus, considering high-redshift probes like quasars (QSOs), having intermediate redshifts between SNe Ia and CMB, is a necessary step. In this work, we use SNe Ia and the most updated QSO sample, reaching redshifts up to $z\sim7.5$, applying the Risaliti-Lusso QSO relation based on a non-linear relation between ultraviolet and X-ray luminosities. We consider this relation both in its original form and corrected for selection biases and evolution in redshift through a reliable statistical method also accounting for the circularity problem. We also explore two approaches: with and without calibration on SNe Ia. We then investigate flat and non-flat standard cosmological models and a flat $w$CDM model, with a constant dark energy equation of state parameter $w$. Remarkably, when correcting for the evolution as a function of cosmology, we obtain closed constraints on $Ømega_M$ using only non-calibrated QSOs. We find that considering non-calibrated QSOs combined with SNe Ia and accounting for the same correction, our results are compatible with a flat $Łambda$CDM model with $Ømega_M = 0.3$ and $H_0 = 70 \, km\,s^-1\,Mpc^-1$. Intriguingly, the $H_0$ values obtained place halfway between the one from SNe Ia and CMB, paving the way for new insights into the $H_0$ tension.

@misc{lenart2022biasfree, abstract = {Cosmological models and their parameters are widely debated because of theoretical and observational mismatches of the standard cosmological model, especially the current discrepancy between the value of the Hubble constant, $H_{0}$, obtained by Type Ia supernovae (SNe Ia), and the Cosmic Microwave Background Radiation (CMB). Thus, considering high-redshift probes like quasars (QSOs), having intermediate redshifts between SNe Ia and CMB, is a necessary step. In this work, we use SNe Ia and the most updated QSO sample, reaching redshifts up to $z\sim7.5$, applying the Risaliti-Lusso QSO relation based on a non-linear relation between ultraviolet and X-ray luminosities. We consider this relation both in its original form and corrected for selection biases and evolution in redshift through a reliable statistical method also accounting for the circularity problem. We also explore two approaches: with and without calibration on SNe Ia. We then investigate flat and non-flat standard cosmological models and a flat $w$CDM model, with a constant dark energy equation of state parameter $w$. Remarkably, when correcting for the evolution as a function of cosmology, we obtain closed constraints on $\Omega_M$ using only non-calibrated QSOs. We find that considering non-calibrated QSOs combined with SNe Ia and accounting for the same correction, our results are compatible with a flat $\Lambda$CDM model with $\Omega_M = 0.3$ and $H_0 = 70 \, \mathrm{km\,s^{-1}\,Mpc^{-1}}$. Intriguingly, the $H_0$ values obtained place halfway between the one from SNe Ia and CMB, paving the way for new insights into the $H_0$ tension.}, added-at = {2022-11-22T09:00:01.000+0100}, author = {Lenart, Aleksander Łukasz and Bargiacchi, Giada and Dainotti, Maria Giovanna and Nagataki, Shigehiro and Capozziello, Salvatore}, biburl = {https://www.bibsonomy.org/bibtex/285939038187a5f2e1d732b768acd68f8/gpkulkarni}, description = {A bias-free cosmological analysis with quasars alleviating $H_0$ tension}, interhash = {b2544cfaaa68b3a441b3a342c83895b1}, intrahash = {85939038187a5f2e1d732b768acd68f8}, keywords = {library}, note = {cite arxiv:2211.10785Comment: Accepted to be published in ApJS; 24 pages, 12 figures}, timestamp = {2022-11-22T09:00:01.000+0100}, title = {A bias-free cosmological analysis with quasars alleviating $H_0$ tension}, url = {http://arxiv.org/abs/2211.10785}, year = 2022 }