29 December 2023 Initial results from multi-beam observations of pulsars and solar transient with the digital beamformer for the Gauribidanur pulsar system
Kshitij S. Bane, Indrajit V. Barve, Gantyada Venkata Satya Gireesh, Chidambaram Kathiravan, Rajaram Ramesh
Author Affiliations +
Abstract

Recently a prototype for pulsar observations at low radio frequencies (RFs) (<100 MHz) using log-periodic dipole antennas (LPDAs) in the Gauribidanur Radio Observatory (77°E14°N) near Bangalore, India, was commissioned. The aforementioned system is currently being augmented (i) to directly digitize the RF signals from the individual antennas and (ii) with a digital beamformer to simultaneously observe different regions of the sky present within the primary “beam” of the LPDA used in the array. Our initial results indicate that co-temporal observations of a known pulsar along with the Sun using two different beams could be used to calibrate the dynamic spectrum of the solar radio transients. This is important because the calibration of the latter in observations with the conventional solar radio spectrographs is difficult.

© 2023 Society of Photo-Optical Instrumentation Engineers (SPIE)
Kshitij S. Bane, Indrajit V. Barve, Gantyada Venkata Satya Gireesh, Chidambaram Kathiravan, and Rajaram Ramesh "Initial results from multi-beam observations of pulsars and solar transient with the digital beamformer for the Gauribidanur pulsar system," Journal of Astronomical Telescopes, Instruments, and Systems 10(1), 014001 (29 December 2023). https://doi.org/10.1117/1.JATIS.10.1.014001
Received: 26 April 2023; Accepted: 14 December 2023; Published: 29 December 2023
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KEYWORDS
Pulsars

Antennas

Phased arrays

Receivers

Sun

Linear filtering

Signal attenuation

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