124 citations · 386 across the 11 of their papers we have counts for
6 papers · 1 filter
The thickness of HI in galactic discs under MOND: theory and application to the Galaxy
F. J. Sanchez-Salcedo, K. Saha, C. A. Narayan
The outskirts of galaxies are a very good laboratory for testing the nature of the gravitational field at low accelerations. By assuming that the neutral hydrogen gas is in hydrost…
Constraints on the halo density profile using HI flaring in the outer Galaxy
C. A. Narayan, K. Saha, C. J. Jog
The observed flaring of HI disk in the outer region of galaxies has been used in the past to determine the shape of the dark matter halo. Previous studies based on this concept sug…
The puzzle about the radial cut-off in galactic disks
Chaitra A. Narayan, Chanda J. Jog
The stellar disk in a spiral galaxy is believed to be truncated physically because the disk surface brightness is observed to fall faster than that for an exponential in the outer,…
Vertical scaleheights in a gravitationally coupled, three-component Galactic disk
Chaitra A. Narayan, Chanda J. Jog
The vertical scaleheight of the atomic hydrogen gas shows a remarkably flat distribution with the galactocentric radius in the inner Galaxy. This has been a long-standing puzzle (O…
Origin of Radially Increasing Stellar Scaleheight in a Galactic Disk
Chaitra A. Narayan, Chanda J. Jog
For the past twenty years, it has been accepted that the vertical scaleheight of the stellar disk in spiral galaxies is constant with radius. However, there is no clear physical ex…
Vertical Distribution of Galactic Disc Stars and Gas Constrained by a Molecular Cloud Complex
Chanda J. Jog, Chaitra A. Narayan
We investigate the dynamical effects of a molecular cloud complex with a mass of about 10**7 M_sun and a size of a few 100 pc on the vertical distribution of stars and atomic hydro…