Zobrazeno 1 - 10
of 198
pro vyhledávání: '"Pandey, Biswajit"'
Autor:
Pandey, Biswajit, Nandi, Anindita
We analyze the evolution of red and blue galaxies in different cosmic web environments from redshift $z=3$ to $z=0$ using the IllustrisTNG simulation. We use Otsu's method to classify the red or blue galaxies at each redshift and determine their geom
Externí odkaz:
http://arxiv.org/abs/2410.23896
Autor:
Pandey, Biswajit
We address long-standing inconsistencies in relativistic thermodynamics, particularly the ambiguities in temperature transformations and entropy evolution in moving or accelerating frames. Traditional approaches often lead to spurious entropy dissipa
Externí odkaz:
http://arxiv.org/abs/2410.10930
Autor:
Nandi, Anindita, Pandey, Biswajit
We use Principal Component Analysis (PCA) to analyze a volume-limited sample from the SDSS and explore how cosmic web environments affect the interrelations between various galaxy properties, such as $(u-r)$ colour, stellar mass, specific star format
Externí odkaz:
http://arxiv.org/abs/2408.16731
Autor:
Sarkar, Suman, Pandey, Biswajit
We investigate how galaxy pairs are oriented in three dimensions within cosmic filaments using data from the EAGLE simulation. We identify filament spines using DisPerSE and isolate galaxies residing in filamentary environments. Employing a FoF algor
Externí odkaz:
http://arxiv.org/abs/2407.16675
Autor:
Das, Apashanka, Pandey, Biswajit
Publikováno v:
JCAP08(2024)060
We study the evolution of the red and blue galaxies from $z=3$ to $z=0$ using the EAGLE simulation. The galaxies in the blue cloud and the red sequence are separated at each redshift using a scheme based on Otsu's method. Our analysis shows that the
Externí odkaz:
http://arxiv.org/abs/2402.05788
Autor:
Nandi, Anindita, Gill, Sukhdeep Singh, Sarkar, Debanjan, Shaw, Abinash Kumar, Pandey, Biswajit, Bharadwaj, Somnath
We have measured the spherically averaged bispectrum of the SDSS DR17 main galaxy sample, considering a volume-limited $[273\, \rm Mpc]^3$ data cube with mean galaxy number density $1.76 \times 10^{-3} \, {\rm Mpc}^{-3}$ and median redshift $0.093$.
Externí odkaz:
http://arxiv.org/abs/2401.15958
We compare the spatial clustering and physical properties of the active galactic nuclei (AGN) and star-forming galaxies (SFG) at fixed stellar mass using a volume limited sample from the Sloan Digital Sky Survey (SDSS). The analysis of the two-point
Externí odkaz:
http://arxiv.org/abs/2310.12943
Autor:
Mondal, Amit, Pandey, Biswajit
Publikováno v:
MNRAS, Volume 533, Issue 3, Pages 3426-3421, 2024
We analyze the spatial anisotropy and the velocity anisotropy in a set of mock stellar halos from the Aquarius simulations. The spatial anisotropy in each mock stellar halo rises progressively with the increasing distance from the halo centre, eventu
Externí odkaz:
http://arxiv.org/abs/2309.10798
Autor:
Pandey, Biswajit
Publikováno v:
Entropy 2023, 25(7), 1094
We study the time evolution of the mutual information between the mass distributions in spatially separated but casually connected regions in an expanding universe. The evolution of the mutual information is primarily determined by the configuration
Externí odkaz:
http://arxiv.org/abs/2307.12959
Autor:
Pandey, Biswajit
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2024, 530, 4550
The green valley represents the population of galaxies that are transitioning from the actively star-forming blue cloud to the passively evolving red sequence. Studying the properties of the green valley galaxies is crucial for our understanding of t
Externí odkaz:
http://arxiv.org/abs/2306.09395