344 citations · 1.6k across the 39 of their papers we have counts for
40 papers
On the Origin of the Ly Damping Wing in Galaxies at : Explorations using the NINJA Simulations
Sukanya Mallik, Raghunathan Srianand, Nishikanta Khandai
Ly damping wing measurements of galaxies at with the JWST provide a powerful probe of the Epoch of Reionization. We combine the large-scale cosmological hydrodyn…
The Stellar Mass Function of Gas-Rich Galaxies and the Underlying Scaling Relation in the Local Universe
Tanya Tripty, Nishikanta Khandai, Saili Dutta +1
We estimate the Galaxy Stellar Mass Function (GSMF) of HI gas-rich galaxies using the 100\% ALFALFA () catalog, of which have optical counterparts in the Sloan Digit…
NISER-IUCAA New Simulations of JWST GAlaxies and Quasars(NINJA): Properties of galaxies at
Ranit Behera, Raghunathan Srianand, Nishikanta Khandai +1
We present the NINJA suite of cosmological hydrodynamical simulations developed to investigate galaxy formation and evolution at in the era of JWST. Using our fiducia…
Universality of Halo Shape and its Morphological Evolution across Cosmic Time
Ayan Nanda, Nishikanta Khandai, J. S. Bagla +1
We investigate the evolution of dark matter halo shapes in cosmological N-body simulations both in scale free Einstein-De Sitter (EdS) and CDM cosmologies. We compute the axis r…
Forecasting properties of detectable massive binary black hole mergers in the era of space based gravitational-wave detectors
Sourabh Magare, Abhinav Roy, Shasvath J. Kapadia +2
Gravitational waves (GWs) from massive black hole (MBH) mergers will provide a novel way to probe the high-redshift universe and are key to understanding galactic dynamics and evol…
Dispersion in the Hubble-Lemaître constant measurements from gravitational clustering
Swati Gavas, J S Bagla, Nishikanta Khandai
Measurements of the Hubble-Lemaître constant () require us to estimate the distance and recession velocity of galaxies independently. Gravitational clustering that leads to th…
Role of ionizing background on the statistics of metal absorbers in hydrodynamical simulations
Sukanya Mallik, Raghunathan Srianand, Soumak Maitra +2
We study the statistical properties of O VI, C IV, and Ne VIII absorbers at low- (i.e., ) using Sherwood simulations with "WIND" only and "WIND+AGN" feedback and Massive…
Halo mass function in scale invariant models
Swati Gavas, J S Bagla, Nishikanta Khandai +1
Sheth-Tormen mass function has been widely used to quantify the abundance of dark matter halos. It is a significant improvement over the Press-Schechter mass function as it uses el…
The Dark Matter Halos of HI Selected Galaxies
Saili Dutta, Nishikanta Khandai, Sandeep Rana
We present the neutral hydrogen mass () function (HIMF) and velocity width () function (HIWF) based on a sample of 7857 galaxies from the 40% data release of…
Redshift space three-point correlation function of IGM at
Soumak Maitra, Raghunathan Srianand, Prakash Gaikwad +1
The Ly forest decomposed into Voigt profile components allow us to study clustering properties of the intergalactic medium and its dependence on various physical quantities. Her…
Simulated X-ray Emission in Galaxy Clusters with Feedback from Active Galactic Nuclei
Rudrani Kar Chowdhury, Soumya Roy, Suchetana Chatterjee +3
To investigate the effect of feedback from active galactic nuclei (AGN) on their surrounding medium, we study the diffuse X-ray emission from galaxy groups and clusters by coupling…
The Distribution of Neutral Hydrogen in the Color-Magnitude Plane of Galaxies
Saili Dutta, Nishikanta Khandai
We present the conditional HI (neutral hydrogen) Mass Function (HIMF) conditioned on observed optical properties, (-band absolute magnitude) and (…
Cosmological Simulation of Galaxy Groups and Clusters-I: Global Effect of Feedback from Active Galactic Nuclei
Rudrani Kar Chowdhury, Suchetana Chatterjee, Anto . I. Lonappan +2
In this study we quantify the properties of the gas and dark matter around active galactic nuclei (AGN) in simulated galaxy groups and clusters and analyze the effect of AGN feedba…
The Population of Galaxies that Contribute to The HI Mass Function
Saili Dutta, Nishikanta Khandai, Biprateep Dey
We look at the contribution of different galaxy populations to the atomic hydrogen (HI) mass function (HIMF) and the HI density parameter, , in the local Universe. O…
Large-scale 3D mapping of the intergalactic medium using the Lyman Alpha Forest
Melih Ozbek, Rupert A. C. Croft, Nishikanta Khandai
Maps of the large-scale structure of the Universe at redshifts 2-4 can be made with the Lyman-alpha forest which are complementary to low redshift galaxy surveys. We apply the Wien…
Luminosity function of [OII] emission-line galaxies in the MassiveBlack-II simulation
KwangHo Park, Tiziana Di Matteo, Shirley Ho +4
We examine the luminosity function (LF) of [OII] emission-line galaxies in the high-resolution cosmological simulation MassiveBlack-II (MBII). From the spectral energy distribution…
Galaxy shapes and alignments in the MassiveBlack-II hydrodynamic and dark matter-only simulations
Ananth Tenneti, Rachel Mandelbaum, Tiziana Di Matteo +2
We compare the shapes and intrinsic alignments of galaxies in the MassiveBlack-II cosmological hydrodynamic simulation (MBII) to those in a dark matter-only (DMO) simulation perfor…
Intrinsic alignments of galaxies in the MassiveBlack-II simulation: analysis of two-point statistics
Ananth Tenneti, Sukhdeep Singh, Rachel Mandelbaum +3
The intrinsic alignment of galaxies with the large-scale density field is an important astrophysical contaminant in upcoming weak lensing surveys. We present detailed measurements…
Galaxy Shapes and Intrinsic Alignments in The MassiveBlack-II Simulation
Ananth Tenneti, Rachel Mandelbaum, Tiziana Di Matteo +2
The intrinsic alignment of galaxy shapes with the large-scale density field is a contaminant to weak lensing measurements, as well as being an interesting signature of galaxy forma…
The MassiveBlack-II Simulation: The Evolution of Halos and Galaxies to z~0
Nishikanta Khandai, Tiziana Di Matteo, Rupert Croft +5
(Abridged for arXiv)We investigate the properties of halos, galaxies and blackholes to z=0 in the high resolution hydrodynamical simulation MassiveBlack-II (MBII) which evolves a L…
Nonparametric 3D map of the IGM using the Lyman-alpha forest
Jessi Cisewski, Rupert A. C. Croft, Peter E. Freeman +4
Visualizing the high-redshift Universe is difficult due to the dearth of available data; however, the Lyman-alpha forest provides a means to map the intergalactic medium at redshif…
High redshift supermassive blackholes: accretion through cold flows
Yu Feng, Tiziana Di Matteo, Rupert Croft +1
We use zoom-in techniques to re-simulate three high-redshift (z > 5.5) halos which host 10^9 solar mass blackholes from the ~ Gpc volume, MassiveBlack cosmological hydrodynamic sim…
Theoretical predictions for the effect of nebular emission on the broad band photometry of high-redshift galaxies
Stephen M. Wilkins, William Coulton, Joseph Caruana +6
By combining optical and near-IR observations from the Hubble Space Telescope with NIR photometry from the Spitzer Space Telescope it is possible to measure the rest-frame UV-optic…
Interpreting the observed UV continuum slopes of high-redshift galaxies
Stephen M. Wilkins, Andrew Bunker, William Coulton +4
The observed UV continuum slope of star forming galaxies is strongly affected by the presence of dust. Its observation is then a potentially valuable diagnostic of dust attenuation…