3 papers
astro-ph.GA2025
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 (…
astro-ph.CO2025
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…
astro-ph.GA2025
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…