385 citations · 3.9k across the 94 of their papers we have counts for
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Frame-dragging and the kinematics of Galactic-Center stars
Rahul Kannan, Prasenjit Saha
We calculate the effects of frame dragging on the Galactic-Center stars. Assuming the stars are only slightly relativistic, we derive an approximation to the Kerr metric, which tur…
The cluster lens ACO 1703: redshift contrast and the inner profile
Prasenjit Saha, Justin I. Read
ACO 1703 is a cluster recently found to have a variety of strongly lensed objects: there is a quintuply-imaged system at z=0.888 and several other lensed objects from z=2.2 to 3.0…
Interpreting the Kustaanheimo-Stiefel transform in gravitational dynamics
Prasenjit Saha
The Kustaanheimo-Stiefel transform turns a gravitational two-body problem into a harmonic oscillator, by going to four dimensions. In addition to the mathematical-physics interest,…
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses VII. Time delays and the Hubble constant from WFI J2033-4723
C. Vuissoz, F. Courbin, D. Sluse +10
Gravitationally lensed quasars can be used to map the mass distribution in lensing galaxies and to estimate the Hubble constant H0 by measuring the time delays between the quasar i…
Unveiling dark halos in lensing galaxies
Ignacio Ferreras, Prasenjit Saha, Scott Burles
We present a spatially resolved comparison of the stellar-mass and total-mass surface distributions of nine early-type galaxies. The galaxies are a subset of the Sloan Lens ACS sur…
Mapping the distribution of luminous and dark matter in strong lensing galaxies
I. Ferreras, P. Saha, L. L. R. Williams +1
We present the distribution of luminous and dark matter in a set of strong lensing (early-type) galaxies. By combining two independent techniques - stellar population synthesis and…