311 citations · 1.8k across the 22 of their papers we have counts for
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Morphological Classification of Radio Galaxies using Semi-Supervised Group Equivariant CNNs
Mir Sazzat Hossain, Sugandha Roy, K. M. B. Asad +4
Out of the estimated few trillion galaxies, only around a million have been detected through radio frequencies, and only a tiny fraction, approximately a thousand, have been manual…
Primary beam effects of radio astronomy antennas -- II. Modelling the MeerKAT L-band beam
K. M. B. Asad, J. N. Girard, M. de Villers +12
After a decade of design and construction, South Africa's SKA-MID precursor MeerKAT has begun its science operations. To make full use of the widefield capability of the array, it…
Wide-field LOFAR-LBA power-spectra analyses: Impact of calibration, polarization leakage and ionosphere
B. K. Gehlot, L. V. E. Koopmans, A. G. de Bruyn +9
Contamination due to foregrounds (Galactic and Extra-galactic), calibration errors and ionospheric effects pose major challenges in detection of the cosmic 21 cm signal in various…
Polarization leakage in epoch of reionization windows: III. Wide-field effects of narrow-field arrays
K. M. B. Asad, L. V. E. Koopmans, V. Jelić +3
Leakage of polarized Galactic diffuse emission into total intensity can potentially mimic the 21-cm signal coming from the epoch of reionization (EoR), as both of them might have f…
Probing Ionospheric Structures using the LOFAR radio telescope
M. Mevius, S. van der Tol, V. N. Pandey +24
LOFAR is the LOw Frequency Radio interferometer ARray located at mid-latitude (). Here, we present results on ionospheric structures derived from 29 LOFAR nighttim…
Polarization leakage in epoch of reionization windows: II. Primary beam model and direction dependent calibration
K. M. B. Asad, L. V. E. Koopmans, V. Jelić +11
Leakage of diffuse polarized emission into Stokes I caused by the polarized primary beam of the instrument might mimic the spectral structure of the 21-cm signal coming from the ep…
Lunar occultation of the diffuse radio sky: LOFAR measurements between 35 and 80 MHz
H. K. Vedantham, L. V. E. Koopmans, A. G. de Bruyn +91
We present radio observations of the Moon between and MHz to demonstrate a novel technique of interferometrically measuring large-scale diffuse emission extending far bey…