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A Floating Octave Bandwidth Cone-Disc Antenna for Detection of Cosmic Dawn
Agaram Raghunathan, Ravi Subrahmanyan, N. Udaya Shankar +9
The critical component of radio astronomy radiometers built to detect redshifted 21-cm signals from Cosmic Dawn is the antenna element. We describe the design and performance of an…
Effects of model incompleteness on the drift-scan calibration of radio telescopes
Bharat K. Gehlot, Daniel C. Jacobs, Judd D. Bowman +76
Precision calibration poses challenges to experiments probing the redshifted 21-cm signal of neutral hydrogen from the Cosmic Dawn and Epoch of Reionization (z~30-6). In both inter…
Validation of EDGES Low-Band Antenna Beam Model
Nivedita Mahesh, Judd D. Bowman, Thomas J. Mozdzen +4
The response of the antenna is a source of uncertainty in measurements with the Experiment to Detect the Global EoR Signature (EDGES). We aim to validate the beam model of the low-…