68 citations · 283 across the 29 of their papers we have counts for
29 papers
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…
CMB Polarization by the Asymmetric Template of Scalar Perturbations
Jafar Khodagholizadeh, Rohoollah Mohammadi, S. M. S. Movahed
Inspired by a dipole asymmetric template for the CMB temperature map in the primordial scalar fluctuations observed by Planck at a large scale, we examine the contribution of a sim…
Homology Groups of Embedded Fractional Brownian Motion
H. Masoomy, S. Tajik, S. M. S. Movahed
A well-known class of non-stationary self-similar time series is the fractional Brownian motion (fBm) considered to model ubiquitous stochastic processes in nature. In this paper,…
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…
Persistent Homology of Fractional Gaussian Noise
H. Masoomy, B. Askari, M. N. Najafi +1
In this paper, we employ the persistent homology (PH) technique to examine the topological properties of fractional Gaussian noise (fGn). We develop the weighted natural visibility…
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…
Birefringent Graphene Oxide Liquid Crystals in Micro-channels for Optical Switch
M. Arshadi Pirlar, Y. Honarmand, M. Rezaei Mirghaed +2
We propose a mechanical-hydrodynamical experimental setup in which the microfluidic motion manipulates the optical birefringence of levitated graphene oxide liquid crystal. The bir…
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…
Light scattering through the graphene oxide liquid crystal in a micro-channel
M. Arshadi Pirlar, M. Rezaei Mirghaed, Y. Honarmand +2
In this paper, we examine the light scattering by the flow of levitated flakes in a micro-channel to characterize the tunable functionality of the graphene oxide liquid crystal in…
Long-range temporal correlation in Auditory Brainstem Responses to Spoken Syllable /da/
Marjan Mozaffarilegha, S. M. S. Movahed
The speech auditory brainstem response (sABR) is an objective clinical tool to diagnose particular impairments along the auditory brainstem pathways. We explore the scaling behavio…
Identification of Defective Two Dimensional Semiconductors by Multifractal Analysis: The Single-layer Case Study
Reza Shidpour, S. M. S. Movahed
Two dimensional semiconductor such as single-layer transition metal dichalcogenides (SL-TMD) have attracted most attentions as an atomically thin layer semiconductor materials. Typ…
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…
Spin Hall effect originated from fractal surface
I. Hajzadeh, S. M. Mohseni, S. M. S. Movahed +1
Spin hall effect (SHE) in thin films is inherited by surface roughness. Although roughness effect on SHE has been studied in thin films, but roughness is not only parameter in roug…
Crossing statistics of laser light scattered through a nanofluid
M. Arshadi Pirlar, S. M. S. Movahed, D. Razzaghi +1
In this paper, we investigate the crossing statistics of speckle patterns formed in Fresnel diffraction region by a laser beam scattering through a nanofluid. We extend $zero-cross…
Multifractal Analysis of Pulsar Timing Residuals: Assessment of Gravitational Wave Detection
I. Eghdami, H. Panahi, S. M. S. Movahed
We introduce a pipeline including multifractal detrended cross-correlation analysis (MF-DXA) modified by either singular value decomposition or the adaptive method to examine the s…
Dynamics of magnetic nano-flake vortices in Newtonian fluids
Nasim Bazazzadeh, Seyed Majid Mohseni, Amin Khavasi +3
We study the rotational motion of nano-flake ferromagnetic discs suspended in a Newtonian fluid, as a potential material owing the vortex-like magnetic configuration. Using analyti…