3 papers
astro-ph.GA2026
The X-ray photon index Eddington ratio relation in radio-quiet quasars from XMM-Newton and SDSS
SH. M. Shehata, Baraa Hany, Reham Mostafa
This study presents a comprehensive X-ray spectroscopic analysis of 642 quasars, obtained by cross-matching the XMM-Newton Serendipitous Source Catalog (DR11) with the Sloan Digita…
astro-ph.GA2026
Hidden Connections: Tracing the BCG Stellar Mass-Halo Mass Relation in the SDSS-GalWCat19 Cluster Catalog
Mohamed H. Abdullah, Rasha M. Samir, Nouran E. Abdelhamid +5
The stellar-to-halo mass (SMHM) relation of brightest cluster galaxies (BCGs) provides key insight into the connection between BCG growth and the assembly of their host halos. We a…
astro-ph.GA2025
The Role of Stellar Mass and Star Formation in Shaping X-ray Emission of Radio-Loud and Radio-Quiet AGN
SH. M. Shehata, F. Shaban, R. M. Samir
Galaxy evolution and extragalactic astronomy research depend on an understanding of the interactions between active galactic nuclei (AGN) and their host galaxies. We investigate th…