28 citations · 78 across the 29 of their papers we have counts for
9 papers · 1 filter
Investigating the effects of gravitational lensing by Hu-Sawicki gravity black holes
Gayatri Mohan, Nashiba Parbin, Umananda Dev Goswami
In this work, gravitational lensing in the weak and strong field limits is investigated for black hole spacetime within the framework of Hu-Sawicki gravity. We employ the Is…
Modelling Cosmic Rays Flux with Pierre Auger and Telescope Array Data in and Theories of Gravity
Swaraj Pratim Sarmah, Umananda Dev Goswami
We investigate the effects of the magnetic field and the redshift on the propagation of galactic and extragalactic cosmic rays (CRs) in a modified theory of gravity (MTG) and an al…
Observational constraints on cosmological parameters in the Bianchi type III Universe with f(R,T) gravity theory
Pranjal Sarmah, Umananda Dev Goswami
Bianchi type III (BIII) metric is an interesting anisotropic model for studying cosmic anisotropy as it has an additional exponential term multiplied to a directional scale factor.…
Anisotropic cosmology in Bumblebee gravity theory
Pranjal Sarmah, Umananda Dev Goswami
The Bumblebee vector model of spontaneous Lorentz symmetry breaking (LSB) in Bianchi type I (BI) Universe to observe its effect on cosmological evolution is an interesting aspect o…
Quasinormal modes, thermodynamics and shadow of black holes in Hu-Sawicki f(R) gravity theory
Ronit Karmakar, Umananda Dev Goswami
We derive novel black hole solutions in a modified gravity theory, namely the Hu-Sawicki model of gravity. After obtaining the black hole solution, we study the horizon radi…
Main sequence of star formation and colour bimodality considering galaxy environment
Pius Privatus, Umananda Dev Goswami
This study involves the use of friend-of-friend method on the volume limited samples constructed from the Sloan Digital Sky Survey Data Release 12 (SDSS DR12) to classify the galax…
Dynamical system analysis of LRS-BI Universe with f(Q) gravity theory
Pranjal Sarmah, Umananda Dev Goswami
Considering the Universe as a dynamic system, the understanding of its evolution is an interesting aspect of study in cosmology. Here, we investigate the anisotropic locally rotati…
AstroSat Observation of Recent Outburst in the Be/X-ray Binary LS V +4417/RX J0440.9+4431
Arshad Hussain, Umananda Dev Goswami
A Be/X-ray binary system known as RX J0440.9+4431 (or LS V +44 17) is a potential member of the uncommon gamma-ray binary class. With an orbital period of 150 days, this system con…
Isolated and group environment dependence of stellar mass and different star formation rates
Pius Privatus, Umananda Dev Goswami
In this study, we explored the impact of isolated and group environments on stellar mass, star formation rate (SFR), and specific star formation rate (SSFR, i.e., the rate of star…