68 citations · 283 across the 29 of their papers we have counts for
15 papers · 1 filter
CMB Bounds on Primordial Black Holes via Radiation Capture
Marzieh Farhang, S. M. S. Movahed
We explore the capture of neutrinos and photons in the cosmic neutrino and photon background by primordial black holes (PBHs). We model this phenomenon as a gravitational interacti…
Quantifying Weighted Morphological Content of Large-Scale Structures via Simulation-Based Inference
M. H. Jalali Kanafi, S. M. S. Movahed
We perform a simulation-based forecasting analysis to compare the cosmological constraining power of higher-order summary statistics of the large-scale structure, the Minkowski Fun…
Cosmic Strings-induced CMB anisotropies in light of Weighted Morphology
Adeela Afzal, M. Alakhras, M. H. Jalali Kanafi +1
Motivated by the morphological measures in assessing the geometrical and topological properties of a generic cosmological stochastic field, we propose an extension of the weighted…
Imprint of massive neutrinos on Persistent Homology of large-scale structure
M. H. Jalali Kanafi, S. Ansarifard, S. M. S. Movahed
Exploiting the Persistent Homology technique and its complementary representations, we examine the footprint of summed neutrino mass () in the various density fields simulated…
Probing the Anisotropy and Non-Gaussianity in the Redshift Space through the Conditional Moments of the First Derivative
M. H. Jalali Kanafi, S. M. S. Movahed
Focusing on the redshift space observations with plane-parallel approximation and relying on the rotational dependency of the general definition of excursion sets, we introduce the…
Planck Limits on Cosmic String Tension Using Machine Learning
M. Torki, H. Hajizadeh, M. Farhang +2
We develop two parallel machine-learning pipelines to estimate the contribution of cosmic strings (CSs), conveniently encoded in their tension (), to the anisotropies of the co…
Cosmological consequences of intrinsic alignments super-sample covariance
Saeed Ansarifard, S. M. S. Movahed
We examine cosmological constraints from high precision weak lensing surveys including super-sample covariance (SSC) due to the finite survey volume. Specifically, we focus on the…
Clustering of Local Extrema in Planck CMB maps
A. Vafaei Sadr, S. M. S. Movahed
The clustering of local extrema will be exploited to examine Gaussianity, asymmetry, and the footprint of the cosmic-string network on the CMB observed by Planck. The number densit…
CMB Cold Spot in the Planck light
Marzieh Farhang, M. Sadegh Movahed
The Cold Spot, with an unusually cold region surrounded by a hot ring, is a statistically significant anomaly in the Cosmic Microwave Background (CMB) sky. In this work we assess w…
The Three Hundred Project: correcting for the hydrostatic-equilibrium mass bias in X-ray and SZ surveys
S. Ansarifard, E. Rasia, V. Biffi +8
Accurate and precise measurements of masses of galaxy clusters are key to derive robust constraints on cosmological parameters. Rising evidence from observations, however, confirms…
The Integrated Sachs-Wolfe Effect in the Bulk Viscous Dark Energy Model
B. Mostaghel, H. Moshafi, S. M. S. Movahed
We examine linear perturbation theory to evaluate the contribution of viscosity coefficient in the growing of dark matter perturbations in the context of the bulk viscous dark ener…
Cosmic String Detection with Tree-Based Machine Learning
A. Vafaei Sadr, M. Farhang, S. M. S. Movahed +2
We explore the use of random forest and gradient boosting, two powerful tree-based machine learning algorithms, for the detection of cosmic strings in maps of the cosmic microwave…
Multi-Scale Pipeline for the Search of String-Induced CMB Anisotropies
A. Vafaei Sadr, S. M. S. Movahed, M. Farhang +2
We propose a multi-scale edge-detection algorithm to search for the Gott-Kaiser-Stebbins imprints of a cosmic string (CS) network on the Cosmic Microwave Background (CMB) anisotrop…
Non-minimal Derivative Coupling Scalar Field and Bulk Viscous Dark Energy
Behrang Mostaghel, Hossein Moshafi, S. M. S. Movahed
Inspired by thermodynamical dissipative phenomena, we consider bulk viscosity for dark fluid in a spatially flat two-component Universe. Our viscous dark energy model represents Ph…
Consistency of nonlinear interacting ghost dark energy with recent observations
E. Ebrahimi, H. Golchin, A. Mehrabi +1
In this paper we investigate ghost dark energy model in the presence of non-linear interaction between dark energy and dark matter. We also extend the analysis to the so called gen…