3 papers
astro-ph.CO2025
Addressing the too-big-to-fail problem and the void phenomenon through a modified initial power spectrum
Hamed Kameli, Shant Baghram
We investigate the impact of early-time initial conditions on nonlinear structure formation and evolution within the framework of the semi-analytical Excursion Set Theory (EST). Ou…
astro-ph.CO2021
Primordial Black Holes in the Excursion Set Theory
Encieh Erfani, Hamed Kameli, Shant Baghram
We study primordial black holes (PBHs) formation in the excursion set theory (EST) in a vast range of PBHs masses with and without confirmed constraints on their abundance. In this…
astro-ph.CO2019
Modified initial power spectrum and too big to fail problem
Hamed Kameli, Shant Baghram
The galactic scale challenges of dark matter such as "missing satellite" problem and "too big to fail" problem are the main caveats of standard model of cosmology. These challenges…