142 citations · 903 across the 31 of their papers we have counts for
34 papers
Model-independent Reconstruction of UV Luminosity Function and Reionization Epoch
Debabrata Adak, Dhiraj Kumar Hazra, Sourav Mitra +1
We conduct a first comprehensive study of the Luminosity Function (LF) using a non-parametric approach. We use Gaussian Process to fit available luminosity data between redshifts $…
Weak solutions and singular limits for a compressible fluid-structure interaction problem with slip boundary conditions
Yadong Liu, Sourav Mitra, Šárka Nečasová
We study a system describing the compressible barotropic fluids interacting with (visco) elastic solid shell/plate. In particular, the elastic structure is part of the moving bound…
Ruling out Strongly Interacting Dark Matter-Dark Radiation Models from Joint Observations of Cosmic Microwave Background and Quasar Absorption Spectra
Atrideb Chatterjee, Sourav Mitra, Amrita Banerjee
The cold dark matter (CDM) paradigm provides a remarkably good description of the Universe's large-scale structure. However, some discrepancies exist between its predictions and ob…
Bilinear R-parity violating supersymmetry under the light of neutrino oscillation, higgs and flavor data
Arghya Choudhury, Sourav Mitra, Arpita Mondal +1
In this work, we explore a well motivated beyond the Standard Model scenario, namely, R-parity violating Supersymmetry, in the context of light neutrino masses and mixing. We assum…
Non-parametric Reconstruction of Photon Escape Fraction from Reionization
Sourav Mitra, Atrideb Chatterjee
One of the most crucial yet poorly constrained parameters in modelling the ionizing emissivity is the escape fraction of photons from star-forming galaxies. Several theoretical and…
Existence of weak solution for a compressible multicomponent fluid structure interaction problem
Martin Kalousek, Sourav Mitra, Šárka Nečasová
We analyze a system of PDEs governing the interaction between two compressible mutually noninteracting fluids and a shell of Koiter type encompassing a time dependent 3D domain fil…
A phase-field approach to shape and topology optimization of acoustic waves in dissipative media
Harald Garcke, Sourav Mitra, Vanja Nikolić
We investigate the problem of finding the optimal shape and topology of a system of acoustic lenses in a dissipative medium. The sound propagation is governed by a general semiline…
Strong well-posedness, stability and optimal control theory for a mathematical model for magneto-viscoelastic fluids
Harald Garcke, Patrik Knopf, Sourav Mitra +1
In this article, we study the strong well-posedness, stability and optimal control of an incompressible magneto-viscoelastic fluid model in two dimensions. The model consists of an…
Existence of weak solutions to a diffuse interface model involving magnetic fluids with unmatched densities
Martin Kalousek, Sourav Mitra, Anja Schlömerkemper
In this article we prove the global existence of weak solutions for a diffuse interface model in a bounded domain (both in 2D and 3D) involving incompressible magnetic fluids with…
CosmoReionMC: A package for estimating cosmological and astrophysical parameters using CMB, Lyman-α absorption and global 21 cm data
Atrideb Chatterjee, Tirthankar Roy Choudhury, Sourav Mitra
We present a Markov Chain Monte Carlo (MCMC)-based parameter estimation package, CosmoReionMC, to jointly constrain cosmological parameters of the CDM model and the astrophysica…
Hybrid analytic and machine-learned baryonic property insertion into galactic dark matter haloes
Ben Moews, Romeel Davé, Sourav Mitra +2
While cosmological dark matter-only simulations relying solely on gravitational effects are comparably fast to compute, baryonic properties in simulated galaxies require complex hy…
Dark matter annihilation in Centauri: Astrophysical implications derived from the MWA radio data
Arpan Kar, Biswarup Mukhopadhyaya, Steven Tingay +6
We present an analysis of Murchison Widefield Array radio telescope data from Cen, possibly a stripped dwarf spheroidal galaxy core captured by our Galaxy. Recent interpretatio…
Global existence of weak solutions to a diffuse interface model for magnetic fluids
Martin Kalousek, Sourav Mitra, Anja Schlömerkemper
This article is devoted to the derivation and analysis of a system of partial differential equations modeling a diffuse interface flow of two Newtonian incompressible magnetic flui…
Observability and unique continuation of the adjoint of a linearized compressible fluid-structure model in a 2d channel
Sourav Mitra
Our objective is to study the observability and unique continuation property of the adjoint of a linearized compressible fluid structure interaction model in a 2D channel. Concerni…
Constraints on dark matter annihilation in dwarf spheroidal galaxies from low frequency radio observations
Arpan Kar, Sourav Mitra, Biswarup Mukhopadhyaya +2
We present the first observational limits on the predicted synchrotron signals from particle Dark Matter annihilation models in dwarf spheroidal galaxies at radio frequencies below…
Heavy dark matter particle annihilation in dwarf spheroidal galaxies: radio signals at the SKA telescope
Arpan Kar, Sourav Mitra, Biswarup Mukhopadhyaya +1
A weakly interacting dark matter candidate is difficult to detect at high-energy colliders like the LHC, if its mass is close to, or higher than a TeV. On the other hand, pair-anni…
Carleman estimate for an adjoint of a damped beam equation and an application to null controllability
Sourav Mitra
In this article we consider a control problem of a linear Euler-Bernoulli damped beam equation with potential in dimension one with periodic boundary conditions. We derive a new Ca…
First study of reionization in tilted flat and untilted non-flat dynamical dark energy inflation models
Sourav Mitra, Chan-Gyung Park, Tirthankar Roy Choudhury +1
We examine the effects of dark energy dynamics and spatial curvature on cosmic reionization by studying reionization in tilted spatially-flat and untilted non-flat XCDM and CDM…
Local existence of Strong solutions for a fluid-structure interaction model
Sourav Mitra
We are interested in studying a system coupling the compressible Navier-Stokes equations with an elastic structure located at the boundary of the fluid domain. Initially the fluid…
Can SKA--Phase 1 go much beyond the LHC in supersymmetry search?
Arpan Kar, Sourav Mitra, Biswarup Mukhopadhyaya +1
We study the potential of the Square Kilometre Array in the first phase (SKA1) in detecting dark matter annihilation signals from dwarf spheroidals in the form of diffuse radio syn…
Stabilization of the non-homogeneous Navier-Stokes equations in a 2d channel
Sourav Mitra
In this article we study the local stabilization of the non-homogeneous Navier- Stokes equations in a 2d channel around Poiseuille flow. We design a feedback control of the velocit…
First study of reionization in the Planck 2015 normalized closed CDM inflation model
Sourav Mitra, Tirthankar Roy Choudhury, Bharat Ratra
We study reionization in two non-flat CDM inflation models that best fit the Planck 2015 cosmic microwave background anisotropy observations, ignoring or in conjunction with bar…
Do astrophysical data disfavour the minimal supersymmetric standard model?
Arpan Kar, Sourav Mitra, Biswarup Mukhopadhyaya +1
If the minimal supersymmetric standard model (MSSM) is the only new physics around the TeV-scale, it has to account for the entire dark matter relic density, or else it will cease…
Constraining the contribution of active galactic nuclei to reionisation
Sultan Hassan, Romeel Davé, Sourav Mitra +3
Recent results have suggested that active galactic nuclei (AGN) could provide enough photons to reionise the Universe. We assess the viability of this scenario using a semi-numeric…