4 citations · 4 across the 3 of their papers we have counts for
3 papers
Analytic formulas for frequency and size dependence of absorption and scattering efficiencies of astronomical polycyclic aromatic hydrocarbons
Ashim K. Roy, Subodh K. Sharma, Ranjan Gupta +1
In a series of two recent papers, the frequency and size distribution dependence of extinction spectra for astronomical silicate and graphite grains was analyzed by us in the conte…
A study of frequency and size distribution dependence of extinction for astronomical silicate and graphite grains
Ashim K. Roy, Subodh K. Sharma, Ranjan Gupta
It is generally agreed that interstellar dust grains consist of two main components, namely, silicates and graphites. Some models, like MRN model, assume these grains to be homogen…
Large diamagnetic persistent currents
Sheelan Sengupta Chowdhury, P. Singha Deo, Ashim Kumar Roy +1
In multichannel rings, evanescent modes will always co-exist with propagating modes. The evanescent modes can carry a very large diamagnetic persistent current that can oscillate w…