7 papers
The Role of Inner Halo Angular Momentum (Spin) in Shaping Dark Matter Bars in Milky Way Analogs
Shouvik Ghosh, Sandeep Kumar Kataria
Studies of galactic bars have primarily focused on stellar bars, since they can be directly observed through ultraviolet to infrared wavebands. Cosmological as well as idealised si…
The Environmental Switch in Black Hole Feeding: Bar-Driven vs. Merger-Driven Growth in IllustrisTNG50
Harsh Uttam, Sandeep Kumar Kataria
The relative roles of secular disc processes and galaxy interactions in driving the growth of supermassive black hole (SMBH) remain unclear. We present a time-resolved, per galaxy…
Is Milky Way gravitationally stable? A TNG50 view from cosmic noon to the present day
K. Aditya, Sandeep Kataria
We investigate the stability of Milky Way analogs (MWAs) in the \texttt{TNG50} simulation against the growth of local axisymmetric instabilities, tracing their evolution from cosmi…
Can A Kinematically Hot and Thick Disk Form A Bar? : Role of Highly Spinning Dark Matter Halos
Sandeep Kumar Kataria
Recent JWST observations claim the existence of a significant fraction of bars in the kinematically hotter and thicker disk at high redshift Universe. These observations challenge…
Dependency of the Bar Formation Timescale On The Halo Spin
Bin-Hui Chen, Sandeep Kumar Kataria, Juntai Shen +1
Bars are among the most prominent structures in disk galaxies. While the widely accepted swing-amplification theory provides a qualitative framework for their formation, the detail…
Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars
Behzad Tahmasebzadeh, Shashank Dattathri, Monica Valluri +7
Barred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on whether the X-wings meet at t…