24 citations · 68 across the 14 of their papers we have counts for
14 papers
Forest without Trees is still Fruitful: Constraints on the thermal state of the neutral IGM at with the 21-cm forest power spectrum
Tomáš Šoltinský, Arnab Chakraborty, Girish Kulkarni +10
Neutral regions of the intergalactic medium (IGM) during the Epoch of Reionization (EoR) remain largely unexplored due to the limitations of existing probes. Owing to discoveries o…
TORRCH: Tomographic reconstruction of the reionization of cosmic hydrogen with Ly emitters and non-Ly-selected galaxies
Soumak Maitra, Girish Kulkarni, Vipul Arora +5
Tomographic reconstruction of reionization is a long-sought goal. It would move the field beyond global summary statistics, such as the volume-averaged ionised fraction, to direct,…
Efficient neutral-IGM inference from noisy 21-cm forest spectra with latent-space U-Net encoding and XGBoost
Sameer K. Patil, Tomáš Šoltinský, Soumak Maitra +1
The 21-cm forest, comprising narrow absorption features imprinted on the radio spectra of high-redshift radio-loud quasars by intervening neutral hydrogen, offers a uniquely sensit…
DeepCHART: Mapping the 3D dark matter density field from Ly forest surveys using deep learning
Soumak Maitra, Matteo Viel, Girish Kulkarni
We present DeepCHART (Deep learning for Cosmological Heterogeneity and Astrophysical Reconstruction via Tomography), a deep learning framework designed to reconstruct the three-dim…
The Lyman- emitter bispectrum as a probe of reionization morphology
Soumak Maitra, Girish Kulkarni, Shikhar Asthana +3
Ly emitters (LAEs) have now been discovered out to redshift , and are valuable probes of the reionization history at redshifts beyond the reach of other currently availabl…
Parameter estimation from Ly forest in Fourier space using Information Maximising Neural Network
Soumak Maitra, Stefano Cristiani, Matteo Viel +2
We aim to present a robust parameter estimation with simulated Lya forest spectra from Sherwood-Relics simulations suite using Information Maximizing Neural Network(IMNN) to extrac…
Higher order clustering of Ly forest
Soumak Maitra
Higher order clustering statistics of Ly forest provide a unique probe to study non-gaussianity in Intergalactic matter distribution up to high redshifts and from large to small…
Role of ionizing background and galactic feedback on the redshift space clustering of OVI absorbers in hydrodynamical simulations
Soumak Maitra, Sukanya Mallik, Raghunathan Srianand
We explore the effect of ionizing UV background (UVB) on the redshift space clustering of low- () OVI absorbers using Sherwood simulations incorpor…
Spectroscopy of QUBRICS quasar candidates: 1672 new redshifts and a Golden Sample for the Sandage Test of the Redshift Drift
Stefano Cristiani, Matteo Porru, Francesco Guarneri +10
The QUBRICS (QUasars as BRIght beacons for Cosmology in the Southern hemisphere) survey aims at constructing a sample of the brightest quasars with z>~2.5, observable with faciliti…
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…
Measurement of redshift-space two- and three-point correlation of Ly absorbers at : Implications on evolution of the physical properties of IGM
Soumak Maitra, Raghunathan Srianand, Prakash Gaikwad
We present redshift space two-point (), three-point () and reduced three-point (Q) correlations of Ly absorbers (Voigt profile components having HI column density, $N_{\rm…
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…
Three- and two-point spatial correlations of IGM at : Cloud based analysis using simulations
Soumak Maitra, Raghunathan Srianand, Prakash Gaikwad +3
Ly forest absorption spectra decomposed into multiple Voigt profile components (clouds) allow us to study clustering of intergalactic medium (IGM) as a function of HI column den…
Three- and two-point spatial correlations of intergalactic medium at using projected quasar triplets
Soumak Maitra, Raghunathan Srianand, Patrick Petitjean +4
We present analysis of two- and three-point correlation functions of Ly forest (at ) using X-Shooter spectra of three background quasar triplets probing transvers…