348 citations · 1.5k across the 73 of their papers we have counts for
10 papers · 1 filter
21cm Global Signal Extraction: Extracting the 21cm Global Signal using Artificial Neural Networks
Madhurima Choudhury, Abhirup Datta, Arnab Chakraborty
The study of the cosmic Dark Ages, Cosmic Dawn, and Epoch of Reionization (EoR) using the all-sky averaged redshifted HI 21cm signal, are some of the key science goals of most of t…
Probing the origin of diffuse radio emission in the cool-core of the Phoenix galaxy cluster
Ramij Raja, Majidul Rahaman, Abhirup Datta +7
Cool core galaxy clusters are considered to be dynamically relaxed clusters with regular morphology and highly X-ray luminous central region. However, cool core clusters can also b…
Effects of CME and CIR induced geomagnetic storms on low-latitude ionization over Indian longitudes in terms of neutral dynamics
Sumanjit Chakraborty, Sarbani Ray, Dibyendu Sur +2
This paper presents the response of the ionosphere during the intense geomagnetic storms of October 12-20, 2016 and May 26-31, 2017 which occurred during the declining phase of the…
Detailed study of ELAIS N1 field with the uGMRT -- II. Source Properties and Spectral Variation Of Foreground Power Spectrum from 300-500 MHz Observations
Arnab Chakraborty, Nirupam Roy, Abhirup Datta +8
Understanding the low-frequency radio sky in depth is necessary to subtract foregrounds in order to detect the redshifted 21 cm signal of neutral hydrogen from the Cosmic Dawn, Epo…
Peering into the Dark (Ages) with Low-Frequency Space Interferometers
Leon Koopmans, Rennan Barkana, Mark Bentum +28
Neutral hydrogen pervades the infant Universe, and its redshifted 21-cm signal allows one to chart the Universe. This signal allows one to probe astrophysical processes such as the…
Detailed study of the ELAIS N1 field with the uGMRT - I. Characterizing the 325 MHz foreground for redshifted 21 cm observations
Arnab Chakraborty, Abhirup Datta, Samir Choudhuri +8
In this first paper of the series, we present initial results of newly upgraded Giant Meterwave Radio Telescope (uGMRT) observation of European Large-Area ISO Survey-North 1 (ELAIS…
Bubble mapping with the Square Kilometer Array -- I. Detecting galaxies with Euclid, JWST, WFIRST and ELT within ionized bubbles in the intergalactic medium at z>6
Erik Zackrisson, Suman Majumdar, Rajesh Mondal +16
The Square Kilometer Array is expected to provide the first tomographic observations of the neutral intergalactic medium at redshifts z>6 and pinpoint the locations of individual i…
The Galaxy Cluster 'Pypeline' for X-ray Temperature Maps: ClusterPyXT
Brian Alden, Eric J. Hallman, David Rapetti +2
ClusterPyXT is a new software pipeline to generate spectral temperature, X-ray surface brightness, pressure, and density maps from X-ray observations of galaxy clusters. These data…
Low-frequency radio study of MACS clusters at 610 and 235 MHz using the GMRT
Surajit Paul, Sameer Salunkhe, Abhirup Datta +1
Studies have shown that mergers of massive galaxy clusters produce shocks and turbulence in the intra-cluster medium, the possible event that creates radio relics, as well as the r…
A simple INDIUM TIN OXIDE/glass DRA
Vivek Parimi, Chia Hao Ku, Abhirup Datta +2
A novel Dielectric Resonator Antenna, simply made of INDIUM TIN OXIDE coated glass slides placed on a microstrip transmission line, for communication applications is presented. Cha…