activity
20122026
most citedNew mass limit for white dwarfs: super-Chandrasekhar type Ia supernova as a new standard candle

152 citations · 602 across the 20 of their papers we have counts for

collaborators

21 papers

astro-ph.HE2026

Is the Binary Black Hole Population Inference from Gravitational-Wave Data Robust?

Upasana Das, Suvodip Mukherjee

Gravitational-wave observations are playing an instrumental role in understanding the population of binary compact objects in the Universe. These observations have begun to hint at…

physics.flu-dyn2020★ 5 cited

Turbulent radiative diffusion and turbulent Newtonian cooling

Axel Brandenburg, Upasana Das

Radiation transport plays important roles in stellar atmospheres, but the effects of turbulence are being obscured by other effects such as stratification. Using radiative hydrodyn…

astro-ph.SR2019★ 1 cited

Possible formation of lowly luminous highly magnetized white dwarfs by accretion leading to SGRs/AXPs

B. Mukhopadhyay, M. Bhattacharya, A. R. Rao +2

We sketch a possible evolutionary scenario by which a highly magnetized super-Chandrasekhar white dwarf could be formed by accretion on to a commonly observed magnetized white dwar…

astro-ph.SR2019★ 5 cited

The time step constraint in radiation hydrodynamics

Axel Brandenburg, Upasana Das

Explicit radiation hydrodynamic simulations of the atmospheres of massive stars and of convection in accretion discs around white dwarfs suffer from prohibitively short time steps…

astro-ph.HE2018★ 22 cited

Internal instabilities in magnetized jets

Upasana Das, Mitchell C. Begelman

We carry out an extensive linear stability analysis of magnetized cylindrical jets in a global framework. Foregoing the commonly invoked force-free limit, we focus on the small-sca…

astro-ph.HE2017★ 34 cited

Instability in strongly magnetized accretion discs: A global perspective

Upasana Das, Mitchell C. Begelman, Geoffroy Lesur

We examine the properties of strongly magnetized accretion discs in a global framework, with particular focus on the evolution of magnetohydrodynamic instabilities such as the magn…