1 citations · 1 across the 4 of their papers we have counts for
5 papers
Passive Identification of Unequal Phase Grid Impedances by Phase-Domain Source Cancellation
Songyang Zhang, Xun Gong, Bo Cao +1
Passive grid impedance estimators that return a single resistance--inductance pair cannot represent a grid whose phase impedances are unequal. This paper identifies a separate pair…
A Six-Parameter Teleparallel Cosmology Beyond CDM: Sign-Changing Torsional Dark Energy and Implications for
Mohamed Bedair, Mahmoud Hashim, Jackson Levi Said +1
We investigate a particular case of the extended exponential infrared f(T) teleparallel gravity, in which the geometric sector naturally produces an effective dark-energy density t…
Cosmological Viability of Exponential Infrared Gravity
Mahmoud Hashim, Eleonora Di Valentino, Jackson Levi Said +1
We investigate the cosmological viability of exponential infrared teleparallel gravity using current cosmological observations. This framework realizes late-time cosmic acce…
Clustered unified dark sector cosmology: Background evolution and linear perturbations in light of observations
Mahmoud Hashim, Amr El-Zant
We consider unified dark sector models in which the fluid can collapse and cluster into halos, allowing for hierarchical structure formation to proceed as in standard cosmology. We…
Building stellar bulges and halo cores from massive clumps observed in the DYNAMO-HST sample
Mahmoud Hashim, Amr El-Zant, Antonino Del popolo
We present N-body simulations of the process of bulge formation in disc galaxies due to inward migration of massive stellar clumps. The process is accompanied by dark halo heating,…