118 citations · 296 across the 20 of their papers we have counts for
23 papers
The Cosmic Radio Dipole and Observer Effects in SKA all-sky surveys
D. Bertacca, L. Böhme, B. Bottazzi Baldi +13
The Square Kilometre Array (SKA) will observe our Universe on the largest scales and so enable the study of fundamental assumptions in cosmology, such as cosmic homogeneity and iso…
The VLA-COSMOS 3 GHz Large Project: Polarised source counts and catalogue
S. Ranchod, S. A. Mao, R. P. Deane +5
The exploration of the faint polarised radio source population is essential for interpreting the nature and evolution of magnetic fields in galaxies. While recent studies have prov…
Cosmology from Clustering of Continuum Galaxies
Jacobo Asorey, Catherine L. Hale, Sebastian von Hausegger +6
The distribution of radio continuum galaxies is a useful, fast, and accessible probe of the matter distribution in the Universe, enlightening us about the Universe's initial condit…
Variability of Sagittarius A* at 3 GHz on minute-scale with MeerKAT
K. Kaur, I. Rammala-Zitha, A. Basu +21
The supermassive black hole Sagittarius A* (Sgr A*) exhibits temporal and spectral variability across the electromagnetic spectrum. However, variability at radio frequencies below…
MeerKAT observations of the spiral galaxy NGC 2997 in the S band. Detection of high dynamo modes
A. Damas-Segovia, R. Beck, S. A. Mao +18
We seek to exploit the expanded observational range of the MeerKAT radio telescope with the new S-band receivers (2.0-2.8 GHz). To showcase its enhanced capabilities, we conducted…
The MeerKAT Absorption Line Survey (MALS) data release 3: Cold atomic gas associated with the Milky Way
N. Gupta, J. Kerp, S. A. Balashev +15
We present results of a blind search for Galactic HI 21-cm absorption lines toward 19130 radio sources, using 390 pointings of MALS, each pointing centered on a source brighter tha…
The kinematic contribution to the cosmic number count dipole
J. D. Wagenveld, S. von Hausegger, H-R. Klöckner +1
Measurements of the number count dipole with large surveys have shown amplitudes in tension with kinematic predictions based on the observed Doppler dipole of the cosmic microwave…
Fermi Unassociated Sources in the MeerKAT Absorption Line Survey
Morgan Himes, Preshanth Jagannathan, Dale Frail +8
Over 2000 Gamma ray sources identified by the Large Area Telescope (LAT) on NASA's Fermi Gamma-ray Space Telescope are considered unassociated, meaning that they have no known coun…
A first glimpse at the MeerKAT DEEP2 field at S-band
S. Ranchod, J. D. Wagenveld, H. -R. Klöckner +15
We present the first widefield extragalactic continuum catalogue with the MeerKAT S-band (2.5 GHz), of the radio-selected DEEP2 field. The combined image over the S1 (1.96 - 2.84 G…
The MeerKAT Absorption Line Survey Data Release 2: Wideband continuum catalogues and a measurement of the cosmic radio dipole
J. D. Wagenveld, H-R. Klöckner, N. Gupta +18
We present the second data release of the MeerKAT Absorption Line Survey (MALS), consisting of wideband continuum catalogues of 391 pointings observed at L~band. The full wideband…
MALS discovery of a rare HI 21-cm absorber at : origin of the absorbing gas in powerful AGN
P. P. Deka, N. Gupta, H. W. Chen +14
We report a new, rare detection of HI 21-cm absorption associated with a quasar (only six known at ) here towards J2339-5523 at = 1.3531, discovered through the Mee…
Plausible association of distant late M dwarfs with low-frequency radio emission
A. J. Gloudemans, J. R. Callingham, K. J. Duncan +10
We present the serendipitous discovery of 8 distant ( 50 pc) late M dwarfs with plausible associated radio emission at 144 MHz. The M dwarf nature of our sources has been confir…
The MeerKAT Absorption Line Survey (MALS) data release I: Stokes I image catalogs at 1-1.4 GHz
P. P. Deka, N. Gupta, P. Jagannathan +24
The MeerKAT Absorption Line Survey (MALS) has observed 391 telescope pointings at L-band (900 - 1670 MHz) at . We present radio continuum images and a catalog of…
The cosmic radio dipole: Bayesian estimators on new and old radio surveys
J. D. Wagenveld, H-R. Klöckner, D. J. Schwarz
The cosmic radio dipole is an anisotropy in the number counts of radio sources, analogous to the dipole seen in the cosmic microwave background (CMB). Measurements of source counts…
The MeerKAT Absorption Line Survey: Homogeneous continuum catalogues towards a measurement of the cosmic radio dipole
J. D. Wagenveld, H. -R. Klöckner, N. Gupta +21
The number counts of homogeneous samples of radio sources are a tried and true method of probing the large scale structure of the Universe, as most radio sources outside the galact…
Discovery of Hydrogen Radio Recombination Lines at z=0.89 towards PKS 1830-211
Kimberly L. Emig, Neeraj Gupta, Pedro Salas +14
We report the detection of stimulated hydrogen radio recombination line (RRL) emission from ionized gas in a galaxy using 580--1670 MHz observations from the MeerKAT Absor…
PKS1413+135: OH and HI at z = 0.247 with MeerKAT
F. Combes, N. Gupta, S. Muller +13
The BL Lac PKS 1413+135 was observed by the Large Survey Project "MeerKAT Absorption Line Survey" (MALS) in the L-band, at 1139 MHz and 1293-1379 MHz, targeting the HI and OH lines…
Discovery of 24 radio-bright quasars at using low-frequency radio observations
A. J. Gloudemans, K. J. Duncan, A. Saxena +18
High redshift quasars () that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe. However, bright radio so…
Mapping HI 21-cm in the Klemola 31 group at z = 0.029: emission and absorption towards PKS2020-370
E. K. Maina, Abhisek Mohapatra, G. I. G. Jozsa +11
We present MeerKAT Absorption Line Survey (MALS) observations of the HI gas in the Klemola31 galaxy group (), located along the line of sight to the radio-loud quasar PKS2…
Revealing new high redshift quasar populations through Gaussian mixture model selection
J. D. Wagenveld, A. Saxena, K. J. Duncan +2
We present a novel method to identify candidate high redshift quasars (HzQs; (), which are unique probes of supermassive black hole growth in the early Universe, from…
MALS SALT-NOT survey of MIR-selected powerful radio-bright AGN at 0<z<3.5
N. Gupta, G. Shukla, R. Srianand +20
We present results of an optical spectroscopic survey using SALT and NOT to build a WISE mid-infrared color-based, dust-unbiased sample of powerful radio-bright (200 mJy at 1.4…
The LOFAR Two Metre Sky Survey: Deep Fields Data Release 1 -- III. Host-galaxy identifications and value added catalogues
R. Kondapally, P. N. Best, M. J. Hardcastle +40
We present the source associations, cross-identifications, and multi-wavelength properties of the faint radio source population detected in the deep tier of the LOFAR Two Metre Sky…
Blind HI and OH absorption line search: first results with MALS and uGMRT processed using ARTIP
N. Gupta, P. Jagannathan, R. Srianand +32
We present details of the Automated Radio Telescope Imaging Pipeline (ARTIP) and results of a sensitive blind search for HI and OH absorbers at and , respectively. A…