4 citations · 4 across the 2 of their papers we have counts for
2 papers
astro-ph.HE2023★ 4 cited
X-ray properties of high-redshift Radio Loud and Radio Quiet Quasars observed by Chandra
F. Shaban, A. Siemiginowska, R. M. Suleiman +2
We performed a study of high redshift () quasars, looking for the main differences between Radio Loud Quasars (RLQ) and Radio Quiet Quasars (RQQ) in the X-ray band. Our sample…
astro-ph.SR2014
Determination of the Hubble Constant Using Cepheids
Mohamed Abdel-Sabour, Mohamed Ebrahim Nouh, Issa Ali Issa +5
This paper introduces a statistical treatment to use Cepheid variable stars as distance indicators. The expansion rate of the Universe is also studied here through deriving the val…