First Results from the REAL-time Transient Acquisition backend (REALTA) at the Irish LOFAR station

Abstract

Modern radio interferometers such as the LOw Frequency ARray (LOFAR) are capable of producing data at hundreds of gigabits to terabits per second. This high data rate makes the analysis of radio data cumbersome and computationally expensive. While high performance computing facilities exist for large national and international facilities, that may not be the case for instruments operated by a single institution or a small consortium. Data rates for next generation radio telescopes are set to eclipse those currently in operation, hence local processing of data will become all the more important. Here, we introduce the REAL-time Transient Acquisition backend (REALTA), a computing backend at the Irish LOFAR station (I-LOFAR) which facilitates the recording of data in near real-time and post-processing. We also present first searches and scientific results of a number of radio phenomena observed by I-LOFAR and REALTA, including pulsars, fast radio bursts (FRBs), rotating radio transients (RRATs), the search for extraterrestrial intelligence (SETI), Jupiter, and the Sun.

12 pages, 10 figures, accepted for publication in Astronomical instrumentation section of Astronomy & Astrophysics 24/08/2021

References in corpus (23)

• A bright millisecond radio burst of extragalactic origin
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• Science with ASKAP - the Australian Square Kilometre Array Pathfinder
• A Review of Solar Type III Radio Bursts
• 45 Years of Rotation of the Crab Pulsar
• LOFAR Detection of 110-188 MHz Emission and Frequency-Dependent Activity from FRB 20180916B
• The search for radio emission from the exoplanetary systems 55 Cancri, $\upsilon$ Andromedae, and $\tau$ Boötis using LOFAR beam-formed observations
• The LOFAR Tied-Array All-Sky Survey (LOTAAS): Survey overview and initial pulsar discoveries
• Pulsar polarisation below 200 MHz: Average profiles and propagation effects
• First detection of frequency-dependent, time-variable dispersion measures
• A deep campaign to characterize the synchronous radio/X-ray mode switching of PSR B0943+10
• On the usefulness of existing Solar-wind models for pulsar timing corrections
• Spectral Flattening at Low Frequencies in Crab Giant Pulses
• Evolution of the Alfvén Mach number associated with a coronal mass ejection shock
• Fine structure of type III solar radio bursts from Langmuir wave motion in turbulent plasma
• LOFAR observations of PSR B0943+10: profile evolution and discovery of a systematically changing profile delay in Bright mode
• The LOFAR Tied-Array All-Sky Survey: Timing of 21 pulsars including the first binary pulsar discovered with LOFAR
• Simultaneous radio and X-ray observations of PSR B0611+22
• Interferometric Imaging with LOFAR Remote Baselines of the Fine Structures of a Solar Type IIIb Radio Burst
• A LOFAR radio search for single and periodic pulses from M31
• Investigating ionospheric calibration for LOFAR 2.0 with simulated observations
• Pulsar timing and its applications
• LOFAR observations of radio burst source sizes and scattering in the solar corona

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• Bursty acceleration and 3D trajectories of electrons in a solar flare
• Long-term Timing Results of Ecliptic Pulsars Observed with I-LOFAR
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