3 papers
astro-ph.GA2023
The stellar bar - dark matter halo connection in the TNG50 simulations
Sioree Ansar, Mousumi Das
Stellar bars in disk galaxies grow as stars in near circular orbits lose angular momentum to their environments, including their Dark Matter (DM) halo, and transform into elongated…
astro-ph.GA2023
Bar formation and destruction in the FIRE-2 simulations
Sioree Ansar, Sarah Pearson, Robyn E. Sanderson +5
The physical mechanisms responsible for bar formation and destruction in galaxies remain a subject of debate. While we have gained valuable insight into how bars form and evolve fr…
astro-ph.CO2018
Impact of inhomogeneous CMB heating of gas on the HI 21-cm signal during dark ages
Sioree Ansar, Kanan K. Datta, Dhruba Dutta Chowdhury
Observations of redshifted 21-cm signal from neutral hydrogen (HI) appear to be the most promising probe of the cosmic dark ages. The signal carries information about the thermal s…