Sayak Datta
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View article: Eccentricity evolution of spinning binaries and its dependence on the equation of state of the components
Eccentricity evolution of spinning binaries and its dependence on the equation of state of the components Open
We study the evolution of the eccentricity of an eccentric orbit with spinning components. We develop a prescription to express the evolving eccentricity in terms of reference eccentricity and frequency. For that purpose we considered the …
View article: Effect of pH on photocatalytic degradation of methylene blue in water by facile hydrothermally grown TiO2 nanoparticles under natural sunlight
Effect of pH on photocatalytic degradation of methylene blue in water by facile hydrothermally grown TiO2 nanoparticles under natural sunlight Open
Each year, the production of synthetic dye wastewater reaches a trillion tons. This poses a significant global challenge of water scarcity. Hence, wastewater must be treated to reverse to useable water and prevent water scarcity. Failing t…
View article: A multi-parameter expansion for the evolution of asymmetric binaries in astrophysical environments
A multi-parameter expansion for the evolution of asymmetric binaries in astrophysical environments Open
Compact binaries with large mass asymmetries - such as Extreme and Intermediate Mass Ratio Inspirals - are unique probes of the astrophysical environments in which they evolve. Their long-lived and intricate dynamics allow for precise infe…
View article: Binary black holes in the heat of merger
Binary black holes in the heat of merger Open
A black hole binary approaching merger undergoes changes in its inspiral rate as energy and angular momentum are lost from the orbits into the horizons. This effect strengthens as the black holes come closer. We use numerical relativity da…
View article: Enhancing Fenton-like Photo-degradation and Electrocatalytic Oxygen Evolution Reaction (OER) in Fe-doped Copper Oxide (CuO) Catalysts
Enhancing Fenton-like Photo-degradation and Electrocatalytic Oxygen Evolution Reaction (OER) in Fe-doped Copper Oxide (CuO) Catalysts Open
Although hydrogen generation by water electrolysis is the cheapest of all other available sources, water splitting still occurs with sluggish kinetics. It is a challenging barrier for H2 production on a large scale. Moreover, research is s…
View article: Effect of pH on photocatalytic degradation of Methylene Blue in water by facile hydrothermally grown TiO2 Nanoparticles under Natural Sunlight
Effect of pH on photocatalytic degradation of Methylene Blue in water by facile hydrothermally grown TiO2 Nanoparticles under Natural Sunlight Open
Each year, the production of synthetic dye wastewater reaches a trillion tons, posing a significant challenge to addressing water scarcity on a global level. Hence, the treatment of wastewater to prevent water scarcity is of prime importan…
View article: Horizon fluxes of binary black holes in eccentric orbits
Horizon fluxes of binary black holes in eccentric orbits Open
We compute the rate of change of mass and angular momentum of a black hole, namely tidal heating, in an eccentric orbit. The change is caused due to the tidal field of the orbiting companion. We compute the result for both the spinning and…
View article: Tidal heating as a discriminator for horizons in equatorial eccentric extreme mass ratio inspirals
Tidal heating as a discriminator for horizons in equatorial eccentric extreme mass ratio inspirals Open
Tidal heating in a binary black hole system is driven by the absorption of energy and angular momentum by the black hole’s horizon. Previous works have shown that this phenomenon becomes particularly significant during the late stages of a…
View article: Black holes immersed in dark matter: Energy condition and sound speed
Black holes immersed in dark matter: Energy condition and sound speed Open
In this work, we study the impact of the environment around a black hole in detail. We introduce nonvanishing radial pressure in a manner analogous to compact stars. We examine both isotropic and anisotropic fluid configurations with and w…
View article: Tidal heating as a discriminator for horizons in equatorial eccentric extreme mass ratio inspirals
Tidal heating as a discriminator for horizons in equatorial eccentric extreme mass ratio inspirals Open
Tidal heating in a binary black hole system is driven by the absorption of energy and angular momentum by the black hole's horizon. Previous works have shown that this phenomenon becomes particularly significant during the late stages of a…
View article: Enhanced photocatalytic degradation of organic pollutants in water using copper oxide (CuO) nanosheets for environmental application
Enhanced photocatalytic degradation of organic pollutants in water using copper oxide (CuO) nanosheets for environmental application Open
Rapid, inexpensive, and low-power/solar light-driven photocatalytic degradation of organic pollutants to deal with annually produced trillion tons of synthetic dye wastewater to prevent water scarcity issues, ecotoxicological risks, and hu…
View article: Eccentricity-tide coupling: Impact on binary neutron stars and extreme mass ratio inspirals
Eccentricity-tide coupling: Impact on binary neutron stars and extreme mass ratio inspirals Open
We study the effect of tidal interaction between two compact bodies in an eccentric orbit. We assume the tidal fields to be static. Therefore, we ignore the dynamic tides and resonant excitations. Using the results, we find the analytical …
View article: Black holes immersed in dark matter: energy condition and sound speed
Black holes immersed in dark matter: energy condition and sound speed Open
In this work, we study the impact of the environment around a black hole in detail. We introduce non-vanishing radial pressure in a manner analogous to compact stars. We examine both isotropic and anisotropic fluid configurations with and …
View article: Phenomenological gravitational waveform model of binary black holes incorporating horizon fluxes
Phenomenological gravitational waveform model of binary black holes incorporating horizon fluxes Open
Subjected to the tidal field of its companion, each component of a coalescing black hole binary suffers a slow change in its mass (tidal heating) and spin (tidal torquing) during the inspiral and merger. This effect modifies the phase and …
View article: Eccentricity evolution of spinning binaries and its dependence on the equation of state of the components
Eccentricity evolution of spinning binaries and its dependence on the equation of state of the components Open
We study the evolution of the eccentricity of an eccentric orbit with spinning components. We develop a prescription to express the evolving eccentricity in terms of reference eccentricity and frequency. For that purpose we considered the …
View article: Horizon fluxes of binary black holes in eccentric orbits
Horizon fluxes of binary black holes in eccentric orbits Open
We compute the rate of change of mass and angular momentum of a black hole, namely tidal heating, in an eccentric orbit. The change is caused due to the tidal field of the orbiting companion. We compute the result for both the spinning and…
View article: Eccentricity-tide coupling: Impact on binary neutron stars and extreme mass ratio inspirals
Eccentricity-tide coupling: Impact on binary neutron stars and extreme mass ratio inspirals Open
We study the effect of tidal interaction between two compact bodies in an eccentric orbit. We assume the tidal fields to be static. Therefore, we ignore the dynamic tides and resonant excitations. Using the results, we find the analytical …
View article: Toward establishing the presence or absence of horizons in coalescing binaries of compact objects by using their gravitational wave signals
Toward establishing the presence or absence of horizons in coalescing binaries of compact objects by using their gravitational wave signals Open
The quest for distinguishing black holes from horizonless compact objects using gravitational wave signals from coalescing compact binaries can be helped by utilizing the phenomenon of tidal heating, which leaves its imprint on the binary …
View article: Probing horizon scale quantum effects with Love
Probing horizon scale quantum effects with Love Open
Future gravitational wave (GW) detectors have been projected to be able to probe the nature of compact objects in great detail. In this work, we study the potential observability of the small length scale physics near black hole horizon wi…
View article: Towards establishing the presence or absence of horizons in coalescing binaries of compact objects by using their gravitational wave signals
Towards establishing the presence or absence of horizons in coalescing binaries of compact objects by using their gravitational wave signals Open
The quest for distinguishing black holes (BH) from horizonless compact objects using gravitational wave (GW) signals from coalescing compact binaries can be helped by utilizing the phenomenon of tidal heating (TH), which leaves its imprint…
View article: Imprint of black hole area quantization and Hawking radiation on inspiraling binary
Imprint of black hole area quantization and Hawking radiation on inspiraling binary Open
We study the potential of gravitational wave astronomy to observe the quantum aspects of black holes with tidal heating. According to Bekenstein's quantization, we find that black hole area discretization can have observable imprints on th…
View article: Constraining neutron star properties with a new equation of state insensitive approach
Constraining neutron star properties with a new equation of state insensitive approach Open
Instead of parameterizing the pressure-density relation of a neutron star (NS), one can parameterize its macroscopic properties such as mass ($M$), radius ($R$), and dimensionless tidal deformability ($Λ$) to infer the equation of state (E…
View article: Tidal heating of black holes and exotic compact objects on the brane
Tidal heating of black holes and exotic compact objects on the brane Open
During the early phase of in-spiral of a binary system, the tidal heating of\na compact object due to its companion plays a significant role in the\ndetermination of the orbital evolution of the binary. The phenomenon depends\ncrucially on…
View article: Recognizing black holes in gravitational-wave observations: Challenges in telling apart impostors in mass-gap binaries
Recognizing black holes in gravitational-wave observations: Challenges in telling apart impostors in mass-gap binaries Open
We study how by careful monitoring of the presence or absence of tidal deformability (TD) and tidal-heating (TH) in the inspiral signal of compact object binaries in ground-based gravitational wave (GW) detectors, one can test if its compo…
View article: Probing horizon scale quantum effects with Love
Probing horizon scale quantum effects with Love Open
Future gravitational wave detectors have been projected to be able to probe the nature of compact objects in great detail. In this work, we study the potential observability of the small length scale physics near black hole horizon with th…
View article: Probing Planck scale physics with quantum Love
Probing Planck scale physics with quantum Love Open
Future gravitational wave detectors have been projected to be able to probe the nature of compact objects in great detail. In this work, we study the potential observability of the Planck length physics with the tidal deformability of the …
View article: Possible connection between the reflection symmetry and existence of equatorial circular orbit
Possible connection between the reflection symmetry and existence of equatorial circular orbit Open
We study a viable connection between the circular-equatorial orbits and\nreflection symmetry across the equatorial plane of a vacuum stationary\naxis-symmetric spacetime in general relativity. The behavior of the circular\nequatorial orbit…
View article: Tidal heating of quantum black holes and their imprints on gravitational waves
Tidal heating of quantum black holes and their imprints on gravitational waves Open
The characteristic difference between a black hole and other exotic compact\nobjects (ECOs) is the presence of the horizon. The horizon of a classical black\nhole acts as a one-way membrane. Due to this nature, any perturbation on the\nbla…