310 citations · 507 across the 21 of their papers we have counts for
22 papers
Distinguishing Kilonovae from Binary Neutron Star and Neutron Star-Black Hole Mergers
Ish Gupta, Yugesh Bhoge, Rahul Kashyap +1
Kilonovae (KNe) are most informative when accompanied by a gravitational-wave signal, which can help identify the source as a binary neutron star (BNS) or a neutron star-black hole…
Nucleosynthesis in outflows of compact objects and detection prospects of associated kilonovae
Nick Ekanger, Mukul Bhattacharya, Shunsaku Horiuchi
We perform a comparative analysis of nucleosynthesis yields from binary neutron star (BNS) mergers, black hole-neutron star (BHNS) mergers, and core-collapse supernovae (CCSNe) wit…
Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars
Banibrata Mukhopadhyay, Mukul Bhattacharya
Over the past several years, there has been enormous interest in massive neutron stars and white dwarfs due to either their direct or indirect evidence. The recent detection of gra…
High-energy neutrino emission from magnetised jets of rapidly rotating protomagnetars
Mukul Bhattacharya, Jose Alonso Carpio, Kohta Murase +1
Relativistic jets originating from protomagnetar central engines can lead to long duration gamma-ray bursts (GRBs) and are considered potential sources of ultrahigh-energy cosmic r…
Systematic exploration of heavy element nucleosynthesis in protomagnetar outflows
Nick Ekanger, Mukul Bhattacharya, Shunsaku Horiuchi
We study the nucleosynthesis products in neutrino-driven winds from rapidly rotating, highly magnetised and misaligned protomagnetars using the nuclear reaction network SkyNet. We…
On the synthesis of heavy nuclei in protomagnetar outflows and implications for ultra-high energy cosmic rays
Mukul Bhattacharya, Shunsaku Horiuchi, Kohta Murase
It has been suggested that strongly magnetised and rapidly rotating protoneutron stars (PNSs) may produce long duration gamma-ray bursts (GRBs) originating from stellar core collap…
Highly magnetized white dwarfs: implications and current status
B. Mukhopadhyay, M. Bhattacharya, A. J. Hackett +3
Over the last decade or so, we have been developing the possible existence of highly magnetized white dwarfs with analytical stellar structure models. While the primary aim was to…
On explaining prompt emission from GRB central engines with photospheric emission model
Mukul Bhattacharya, Pawan Kumar
Although the observed spectra for gamma-ray burst (GRB) prompt emission is well constrained, the underlying radiation mechanism is still not very well understood. We explore photos…
Effect of field dissipation and cooling on the mass-radius relation of strongly magnetised white dwarfs
Mukul Bhattacharya, Alexander J. Hackett, Abhay Gupta +2
We investigate the luminosity suppression and its effect on the mass-radius relation as well as cooling evolution of highly magnetised white dwarfs. Based on the effect of magnetic…
Fast Radio Burst Dispersion Measure Distribution as a Probe of Helium Reionization
Mukul Bhattacharya, Pawan Kumar, Eric V. Linder
Fast radio burst (FRB) discoveries are occurring rapidly, with thousands expected from upcoming surveys. The dispersion measures (DM) observed for FRB include important information…
Explaining GRB prompt emission with sub-photospheric dissipation and Comptonization
Mukul Bhattacharya, Pawan Kumar
Even though the observed spectra for GRB prompt emission is well constrained, no single radiation mechanism can robustly explain its distinct non-thermal nature. Here we explore th…
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…
Constraining FRB progenitors from flux distribution
Mukul Bhattacharya
We present a generic formalism to constrain the cosmic rate density history and the source luminosity function of FRB progenitors from the statistical properties of the apparent fl…
Population modelling of FRBs from intrinsic properties
Mukul Bhattacharya, Pawan Kumar
We present a method to estimate the source properties of FRBs from observations by assuming a fixed DM contribution from a MW-like host galaxy, pulse temporal broadening models for…
Luminosity and cooling suppression in magnetized white dwarfs
Mukul Bhattacharya, Banibrata Mukhopadhyay, Subroto Mukerjee
We investigate the luminosity and cooling of highly magnetized white dwarfs where cooling occurs by the diffusion of photons. We solve the magnetostatic equilibrium and photon diff…
Mergers of black hole-neutron star binaries and rates of associated electromagnetic counterparts
Mukul Bhattacharya, Pawan Kumar, George Smoot
Black hole-neutron star (BHNS) binaries are amongst promising candidates for the joint detection of electromagnetic (EM) signals with gravitational waves (GWs) and are expected to…
On estimating the atomic hydrogen column density from the H I 21 cm emission spectra
Preetha Saha, Nirupam Roy, Mukul Bhattacharya
The 21 cm hyperfine transition of the atomic hydrogen (HI) in ground state is a powerful probe of the neutral gas content of the universe. This radio frequency transition has been…
Fast radio burst source properties and curvature radiation model
Pawan Kumar, Wenbin Lu, Mukul Bhattacharya
We use the observed properties of fast radio bursts (FRBs) and a number of general physical considerations to provide a broad-brush model for the physical properties of FRB sources…
Monte Carlo simulations of Photospheric emission in relativistic outflows
Mukul Bhattacharya, Wenbin Lu, Rodolfo Santana +1
We study the spectra of photospheric emission from highly relativistic gamma-ray burst outflows using a Monte Carlo (MC) code. We consider the Comptonization of photons with a fast…
Significantly super-Chandrasekhar limiting mass white dwarfs and their consequences
Banibrata Mukhopadhyay, Upasana Das, A. R. Rao +5
Since 2012, we have initiated a new idea showing that the mass of highly magnetized or modified Einstein's gravity induced white dwarfs could be significantly super-Chandrasekhar w…
Luminosity and cooling of highly magnetized white dwarfs: suppression of luminosity by strong magnetic fields
Mukul Bhattacharya, Banibrata Mukhopadhyay, Subroto Mukerjee
We investigate the luminosity and cooling of highly magnetized white dwarfs with electron-degenerate cores and non-degenerate surface layers where cooling occurs by diffusion of ph…
Study of motion around a static black hole in Einstein and Lovelock gravity
Mukul Bhattacharya, Naresh Dadhich, Banibrata Mukhopadhyay
We study motion around a static Einstein and pure Lovelock black hole in higher dimensions. It is known that in higher dimensions, bound orbits exist only for pure Lovelock black h…