106 citations · 832 across the 21 of their papers we have counts for
21 papers
A model-independent compact dynamical system formulation for exploring bounce and cyclic cosmological evolutions in gravity
A. S. Agrawal, Charlotte Louw, Saikat Chakraborty +1
Using the dynamical systems approach together with the cosmographic parameters, we present a model-independent dynamical system formulation for cosmology in f(R) gravity. The formu…
Global phase space analysis for a class of single scalar field bouncing solutions in general relativity
A. S. Agrawal, Saikat Chakraborty, B. Mishra +2
We carry out a compact phase space analysis of a non-canonical scalar field theory whose Lagrangian is of the form within general relativity. In particular, we focus on…
Bouncing cosmological models in a functional form of F(R) gravity
A. S. Agrawal, S. Mishra, S. K. Tripathy +1
We have investigated some bouncing cosmological models in an isotropic and homogeneous space time with the F(R) theory of gravity. Two functional forms of F(R) have been investigat…
Observationally constrained accelerating cosmological model with higher power of non-metricity and squared trace
A. S. Agrawal, B. Mishra, S. K. Tripathy
In this paper, a cosmological model of the Universe is presented in gravity and the parameters are constrained by cosmological data sets. Initially, a generalised form of…
Matter Bounce Scenario in Extended Symmetric Teleparallel Gravity
A. S. Agrawal, B. Mishra, P. K. Agrawal
In this paper, we have shown the matter bounce scenario of the Universe in an extended symmetric teleparallel gravity, the f(Q) gravity. Motivated from the bouncing scenario and lo…
Unimodular Gravity Traversable Wormholes
A. S. Agrawal, B. Mishra, P. H. R. S. Moraes
Wormholes are outstanding solutions of Einstein's General Relativity. They were worked out in the late 1980's by Morris and Thorne, who have figured out a recipe that wormholes mus…
f(R) wormholes embedded in a pseudo--Euclidean space
A. S. Agrawal, B. Mishra, Francisco Tello-Ortiz +1
This work is devoted to the study of analytic wormhole solutions within the framework of gravity theory. To check the possibility of having wormhole structures satisfying en…
Bouncing cosmology in extended gravity and its reconstruction as dark energy model
A. S. Agrawal, Francisco Tello-Ortiz, B. Mishra +1
In this paper, we have presented a bouncing cosmological model of the Universe in an extended theory of gravity. The dynamical behaviour of the model obtained from the flat FLRW sp…
Matter Bounce Scenario and the Dynamical aspects in f(Q,T) Gravity
A. S. Agrawal, Laxmipriya Pati, S. K. Tripathy +1
In the context of the late time cosmic acceleration phenomenon, many geometrically modified theories of gravity have been proposed in recent times. In this paper, we have investiga…
Wormhole solutions in Gravity
B. Mishra, A. S. Agrawal, S. K. Tripathy. Saibal. Ray
In this work, we have studied the traversable wormholes geometry in theory gravity, where be the Ricci scalar. The wormhole solution for some assumed functions ha…
Gravitational baryogenesis models comparison in f(R) Gravity
A. S. Agrawal, S. K. Tripathy, B. Mishra
We have studied the gravitational baryogenesis in f(R) theory of gravity with an anisotropic Bianchi I space-time. The matter field is considered to be that of perfect fluid. Two m…
Standard candles and sirens rescue
Aniket Agrawal, Teppei Okumura, Toshifumi Futamase
We show that future observations of binary neutron star systems with electromagnetic counterparts together with the traditional probes of low- and high-redshift Type Ia supernovae…
A clustering-based self-calibration of the richness-to-mass relation of CAMIRA galaxy clusters out to in the Hyper Suprime-Cam survey
I-Non Chiu, Teppei Okumura, Masamune Oguri +3
We perform a self-calibration of the richness-to-mass (-) relation of CAMIRA galaxy clusters with richness at redshift by modeling redshift-space tw…
Constraining neutrino mass and dark energy with peculiar velocities and lensing dispersions of Type Ia supernovae
Aniket Agrawal, Teppei Okumura, Toshifumi Futamase
We show that peculiar velocities of Type Ia supernovae can be used to derive constraints on the sum of neutrino masses, , and dark energy equation of state, $w = w_0+w_a(1-a)…
Comparing approximate methods for mock catalogues and covariance matrices III: Bispectrum
Manuel Colavincenzo, Emiliano Sefusatti, Pierluigi Monaco +19
We compare the measurements of the bispectrum and the estimate of its covariance obtained from a set of different methods for the efficient generation of approximate dark matter ha…
Comparing approximate methods for mock catalogues and covariance matrices II: Power spectrum multipoles
Linda Blot, Martin Crocce, Emiliano Sefusatti +19
We study the accuracy of several approximate methods for gravitational dynamics in terms of halo power spectrum multipoles and their estimated covariance matrix. We propagate the d…
Comparing approximate methods for mock catalogues and covariance matrices I: correlation function
Martha Lippich, Ariel G. Sánchez, Manuel Colavincenzo +19
This paper is the first in a set that analyses the covariance matrices of clustering statistics obtained from several approximate methods for gravitational structure formation. We…
Non-Gaussianity of Inflationary Gravitational Waves from the Field Equation
Aniket Agrawal
We demonstrate equivalence of the in-in formalism and Green's function method for calculating the bispectrum of primordial gravitational waves generated by vacuum fluctuations of t…
Tensor Non-Gaussianity from Axion-Gauge-Fields Dynamics : Parameter Search
Aniket Agrawal, Tomohiro Fujita, Eiichiro Komatsu
We calculate the bispectrum of scale-invariant tensor modes sourced by spectator SU(2) gauge fields during inflation in a model containing a scalar inflaton, a pseudoscalar axion a…
Large Tensor Non-Gaussianity from Axion-Gauge Fields Dynamics
Aniket Agrawal, Tomohiro Fujita, Eiichiro Komatsu
We show that an inflation model in which a spectator axion field is coupled to an SU(2) gauge field produces a large three-point function (bispectrum) of primordial gravitational w…
Generating Log-normal Mock Catalog of Galaxies in Redshift Space
Aniket Agrawal, Ryu Makiya, Chi-Ting Chiang +3
We present a public code to generate a mock galaxy catalog in redshift space assuming a log-normal probability density function (PDF) of galaxy and matter density fields. We draw g…