2.7k citations · 3.3k across the 16 of their papers we have counts for
18 papers
Energy and polarization based on-line interference mitigation in radio interferometry
Sarod Yatawatta, Albert-Jan Boonstra, Chris P. Broekema
Radio frequency interference (RFI) is a persistent contaminant in terrestrial radio astronomy. While new radio interferometers are becoming operational, novel sources of RFI are al…
The ROAD to discovery: machine learning-driven anomaly detection in radio astronomy spectrograms
Michael Mesarcik, Albert-Jan Boonstra, Marco Iacobelli +3
As radio telescopes increase in sensitivity and flexibility, so do their complexity and data-rates. For this reason automated system health management approaches are becoming incre…
Learning to detect RFI in radio astronomy without seeing it
Michael Mesarcik, Albert-Jan Boonstra, Elena Ranguelova +1
Radio Frequency Interference (RFI) corrupts astronomical measurements, thus affecting the performance of radio telescopes. To address this problem, supervised segmentation models h…
Improving Novelty Detection using the Reconstructions of Nearest Neighbours
Michael Mesarcik, Elena Ranguelova, Albert-Jan Boonstra +1
We show that using nearest neighbours in the latent space of autoencoders (AE) significantly improves performance of semi-supervised novelty detection in both single and multi-clas…
Deep Learning Assisted Data Inspection for Radio Astronomy
Michael Mesarcik, Albert-Jan Boonstra, Christiaan Meijer +3
Modern radio telescopes combine thousands of receivers, long-distance networks, large-scale compute hardware, and intricate software. Due to this complexity, failures occur relativ…
A Roadmap towards a Space-based Radio Telescope for Ultra-Low Frequency Radio Astronomy
M. J. Bentum, M. K. Verma, R. T. Rajan +10
The past two decades saw a renewed interest in low frequency radio astronomy, with a particular focus on frequencies above 30 MHz. However, at frequencies below 30 MHz, Earth-based…
Peering into the Dark (Ages) with Low-Frequency Space Interferometers
Leon Koopmans, Rennan Barkana, Mark Bentum +28
Neutral hydrogen pervades the infant Universe, and its redshifted 21-cm signal allows one to chart the Universe. This signal allows one to probe astrophysical processes such as the…
Near-Memory Computing: Past, Present, and Future
Gagandeep Singh, Lorenzo Chelini, Stefano Corda +5
The conventional approach of moving data to the CPU for computation has become a significant performance bottleneck for emerging scale-out data-intensive applications due to their…
Discovering the Sky at the Longest Wavelengths with Small Satellite Constellations
Xuelei Chen, Jack Burns, Leon Koopmans +29
Due to ionosphere absorption and the interference by natural and artificial radio emissions, ground observation of the sky at the decameter or longer is very difficult. This unexpl…
NOIRE Study Report: Towards a Low Frequency Radio Interferometer in Space
Baptiste Cecconi, Moustapha Dekkali, Carine Briand +13
Ground based low frequency radio interferometers have been developed in the last decade and are providing the scientific community with high quality observations. Conversely, curre…
Space-based Aperture Array For Ultra-Long Wavelength Radio Astronomy
Raj Thilak Rajan, Albert-Jan Boonstra, Mark Bentum +5
The past decade has seen the rise of various radio astronomy arrays, particularly for low-frequency observations below 100MHz. These developments have been primarily driven by inte…
A Sustainable approach to large ICT Science based infrastructures; the case for Radio Astronomy
Domingos Barbosa, Joao Paulo Barraca, Albert-Jan Boonstra +4
Large sensor-based infrastructures for radio astronomy will be among the most intensive data-driven projects in the world, facing very high power demands. The geographically wide d…
LOFAR: The LOw-Frequency ARray
M. P. van Haarlem, M. W. Wise, A. W. Gunst +197
LOFAR, the LOw-Frequency ARray, is a new-generation radio interferometer constructed in the north of the Netherlands and across europe. Utilizing a novel phased-array design, LOFAR…
Radio astronomy with the Lunar Lander: opening up the last unexplored frequency regime
Marc Klein Wolt, Amin Aminaei, Philippe Zarka +3
The active broadband (1 kHz-100 MHz) tripole antenna now envisaged to be placed on the European Lunar Lander located at the Lunar South Pole allows for sensitive measurements of th…
Wide-band Simultaneous Observations of Pulsars: Disentangling Dispersion Measure and Profile Variations
T. E. Hassall, B. W. Stappers, J. W. T. Hessels +91
Dispersion in the interstellar medium is a well known phenomenon that follows a simple relationship, which has been used to predict the time delay of dispersed radio pulses since t…
First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256
R. J. van Weeren, H. J. A. Rottgering, D. A. Rafferty +79
Abell 2256 is one of the best known examples of a galaxy cluster hosting large-scale diffuse radio emission that is unrelated to individual galaxies. It contains both a giant radio…
Optimized Trigger for Ultra-High-Energy Cosmic-Ray and Neutrino Observations with the Low Frequency Radio Array
K. Singh, M. Mevius, O. Scholten +100
When an ultra-high energy neutrino or cosmic ray strikes the Lunar surface a radio-frequency pulse is emitted. We plan to use the LOFAR radio telescope to detect these pulses. In t…
Multichannel interference mitigation methods in radio astronomy
Amir Leshem, Alle-Jan van der Veen, Albert-Jan Boonstra
Radio-astronomical observations are increasingly corrupted by RF interference, and online detection and filtering algorithms are becoming essential. To facilitate the introduction…