129 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Jadavpur UniversityIN12 papers
- Saha Institute of Nuclear PhysicsIN11 papers
- St Xavier’s CollegeIN7 papers
- Bose InstituteIN5 papers
- St. Xavier's College (Autonomous)5 papers
- The University of OsakaJP4 papers
- Government of West BengalIN3 papers
- Scottish Church CollegeIN3 papers
- F.D. Ovcharenko Institute of Biocolloidal ChemistryUA2 papers
- Gopal Nagar High SchoolIN2 papers
- Indian Institute of Science Education and Research KolkataIN2 papers
- Inter-University Centre for Astronomy and AstrophysicsIN2 papers
52 papers
Heating of the intracluster medium by buoyant bubbles and sound waves
Asif Iqbal, Subhabrata Majumdar, Biman B. Nath +1
Active galactic nuclei (AGN) powered by the central Super-Massive Black Holes (SMBHs) play a major role in modifying the thermal properties of the intracluster medium (ICM). In thi…
Density perturbation and cosmological evolution in the presence of magnetic field in gravity models
Samarjit Chakraborty, Sarbari Guha
In this paper, we have investigated the density perturbations and cosmological evolution in the FLRW universe in presence of a cosmic magnetic field, which may be assumed to mimic…
Dynamical conditions and causal transport of dissipative spherical collapse in gravity
Sarbari Guha, Uttaran Ghosh
In this paper, we have investigated the non-adiabatic spherical gravitational collapse in the framework of the theory of gravity with a locally anisotropic fluid that unde…
Bounds on Dark Matter Annihilation Cross-sections from Inert Doublet Model in the context of 21 cm Cosmology of Dark Ages
Rupa Basu, Madhurima Pandey, Debasish Majumdar +1
We study the fluctuations in the brightness temperature of 21-cm signal at the dark ages () with a dark matter candidate in Inter Doublet Model (IDM). We then e…
Chandrasekhar limit for rotating quark stars
Ashadul Halder, Shibaji Banerjee, Sanjay K. Ghosh +1
The limiting mass is a significant characteristic for compact exotic stars. In the case of quark stars, the limiting mass can be expressed in terms of fundamental constants and the…
On Structure space of the ring
A. Deb Ray, Atanu Mondal
In this article, we continue our study of the ring of Baire one functions on a topological space , denoted by and extend the well known M. H. Stones's theorem from…
The Violation of Equivalence Principle and Four Neutrino Oscillations for Long Baseline Neutrinos
Madhurima Pandey, Debasish Majumdar, Amit Dutta Banik +1
Violation of equivalence principle predicts that neutrinos of different flavor couple differently with gravity. Such a scenario can give rise to gravity induced flavor oscillations…
An investigation on gravitational entropy of cosmological models
Samarjit Chakraborty, Sarbari Guha, Rituparno Goswami
In this paper, we investigate the entropy of the free gravitational field for a given epoch for some well-known isotropic and anisotropic cosmologies. We use the definition of grav…
Estimation of Baryon Asymmetry from Dark Matter Decaying into IceCube Neutrinos
Tista Mukherjee, Madhurima Pandey, Debasish Majumdar +1
The recent results of IceCube Neutrino Observatory include an excess of PeV neutrino events which appear to follow a broken power law different from the other lower energy neutrino…
Addressing -ray emissions from dark matter annihilations in 45 milky way satellite galaxies and in extragalactic sources with particle dark matter models
Ashadul Halder, Shibaji Banerjee, Madhurima Pandey +1
The mass to luminosity ratio of the dwarf satellite galaxies in the Milky Way suggests that these dwarf galaxies may contain substantial dark matter. The dark matter at the dense r…
On the gravitational entropy of accelerating black holes
Sarbari Guha, Samarjit Chakraborty
In this paper we have examined the validity of a proposed definition of gravitational entropy in the context of accelerating black hole solutions of the Einstein field equations, w…
Evolution of FRW universe in variable modified Chaplygin gas model
Samarjit Chakraborty, Sarbari Guha, D. Panigrahi
In this paper we study the evolution of the FRW universe filled with variable modified Chaplygin gas (VMCG). We begin with a thermodynamical treatment of VMCG described by the equa…
A Study of the Dynamics of a new Piecewise Smooth Map
Dhrubajyoti Biswas, Soumyajit Seth, Mita Bor
In this article, we have studied a 1D map, which is formed by combining the two well-known maps i.e. the tent and the logistic maps in the unit interval i.e. [0, 1]. The proposed m…
Mass and Life Time of Heavy Dark Matter Decaying into IceCube PeV Neutrinos
Madhurima Pandey, Debasish Majumdar, Ashadul Halder +1
Considering that the ultrahigh energy (UHE) upgoing muon neutrino events around the PeV energy region observed by the IceCube are due to the decay of super heavy dark matter to neu…
Thermodynamics of FRW Universe With Chaplygin Gas Models
Samarjit Chakraborty, Sarbari Guha
In this paper we have examined the validity of the generalized second law of thermodynamics (GSLT) in an expanding Friedmann Robertson Walker (FRW) universe filled with different v…
Confidential Encrypted Data Hiding and Retrieval Using QR Authentication System
Somdip Dey, Asoke Nath, Shalabh Agarwal
Now, security and authenticity of data is a big challenge. To solve this problem, we propose an innovative method to authenticate the digital documents. In this paper, we propose a…
Five-dimensional warped product space-time with time-dependent warping and a scalar field in the bulk
Sarbari Guha, Pinaki Bhattacharya
We have considered gravity in a five-dimensional warped product space-time, with a time-dependent warp factor and a time-dependent extra dimension. The five-dimensional field equat…
Strong Lensing of a Regular Black Hole with an Electrodynamics Source
Tuhina Manna, Farook Rahaman, Sabiruddin Molla +2
In this paper we have investigated the gravitational lensing phenomenon in the strong field regime for a regular, charged, static, non-linear black hole having a electrodynamics so…
Partial Domination in Graphs
Angsuman Das
Let be a graph. For some with , a subset of is said to be a -partial dominating set if . The size of a smallest such is cal…
A Study of the Time Evolution of Brans-Dicke Parameter and its Role in Cosmic Expansion
Sudipto Roy, Soumyadip Chowdhury
The dependence of Brans-Dicke (BD) parameter upon the scalar field, for different cosmological era of the expanding universe, has been explored. The time dependence of the scalar f…
A new class of relativistic model of compact stars of embedding class I
Piyali Bhar, Ksh. Newton Singh, Tuhina Manna
In the present paper we have constructed a new relativistic anisotropic compact star model having a spherically symmetric metric of embedding class one. Here we have assumed an arb…
On Perfectness of Intersection Graph of Ideals of
Angsuman Das
In this paper, we characterize the positive integers for which intersection graph of ideals of is perfect.
Dark energy stars: Stable configurations
Piyali Bhar, Tuhina Manna, Farook Rahaman +1
In present paper a spherically symmetric stellar configuration has been analyzed by assuming the matter distribution of the stellar configuration is anisotropic in nature and compa…
Time Evolution of the Matter Content of the Expanding Universe in the Framework of Brans-Dicke Gravity
Sudipto Roy
A cosmological model has been constructed in the framework of Brans-Dicke (BD) gravity, based on an inter-conversion between matter and dark energy, for a spatially flat universe i…