6 papers
An information-theoretic bound on cosmic coherence in finite-volume simulations
Biswajit Pandey, Anindita Nandi
We quantify the physical memory of the cosmic density field using mutual information between -body snapshots at different redshifts, removing a random baseline to isolate gravit…
Separating halo and disk stars in galaxies with Fuzzy Set Theory
Amit Mondal, Biswajit Pandey
Disk and halo stars are generally classified using several conventional methods, such as the Toomre diagram, sharp cuts in metallicity ([Fe/H]), vertical distance (…
Tracing correlations between galaxy properties across the Cosmic Web: An IllustrisTNG-based study
Anindita Nandi, Biswajit Pandey, Prakash Sarkar
We explore the impact of cosmic web environments on galaxy properties such as colour, stellar mass, star formation rate, and stellar metallicity, using a stellar mass-matc…
Revealing a transitional epoch of large-scale cosmic anisotropy in the quasar distribution
Amit Mondal, Biswajit Pandey, Krishna Ghosh
The Cosmological Principle posits that the Universe is isotropic on the largest scales. While widely supported, this foundational assumption remains testable. We analyse the angula…
Spatial and velocity anisotropies of stellar halos across cosmic web environments: Insights from IllustrisTNG simulation
Amit Mondal, Biswajit Pandey, Anindita Nandi
The role of large-scale environment in shaping the structural and kinematic properties of stellar halos remains an open question. We investigate whether the cosmic web environments…
The long road to the Green Valley: Tracing the evolution of the Green Valley galaxies in the EAGLE simulation
Apashanka Das, Biswajit Pandey
We study the evolution of the progenitors of the present-day Green Valley (GV) galaxies across redshift using data from the EAGLE simulations. We identify the present-day…