165 citations · 872 across the 43 of their papers we have counts for
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Cloudy Atmosphere of the Extra-solar Planet HD189733b : A Possible Explanation of the Detected B-band Polarization
Sujan Sengupta
The peak amplitude of linear polarization detected recently from an extrasolar hot giant planet HD 189733b, is a few times of , more than an order of magnitude higher than…
Polarization of Starlight by Unresolved and Oblate Extra-solar Planet in Elliptical Orbit
Sujan Sengupta, Malay Maiti
We calculate the degree of linear polarization of radiation from stars having planets that may not be resolved spatially. We assume single scattering by water and silicate particul…
Polarization of L Dwarfs by Dust Scattering
Sujan Sengupta, Sun Kwok
The degree of polarization in L dwarfs of spectral types L0 to L6 resulting from dust scattering in a rotation-induced oblate photosphere is calculated. Assuming that forsterite is…
Observation of R-Band Variability of L Dwarfs
M. Maiti, S. Sengupta, P. S. Parihar +1
We report, for the first time, photometric variability of L dwarfs in band. Out of three L1 dwarfs (2MASS 1300+19, 2MASS 1439+19, and 2MASS 1658+70) observed, we have detected…
Effects of Dust Scattering in Expanding Spherical Nebulae
M. Srinivasa Rao, Sujan Sengupta
The mean intensity of planetary nebulae with an expanding atmosphere is modeled by considering dusty and dust-free atmospheres. The bulk matter density is determined from the adopt…
Sunyaev-Zel'dovich Effect by Multiple Sctattering : Numerical Solution of the Transfer Equations
Sujan K. Sengupta
The radiative transfer equations for multiple inverse Compton scattering of the Cosmic Microwave Background Radiation (CMBR) by the hot intra-cluster electrons are solved numerical…