7.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Institute for AstrophysicsIT1.2k papers
- University of BolognaIT1.1k papers
- Centre National de la Recherche ScientifiqueFR830 papers
- Leiden UniversityNL562 papers
- University of PaduaIT461 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR449 papers
- Astrophysique, Instrumentation et ModélisationFR424 papers
- Center for Astrophysics Harvard & SmithsonianUS420 papers
- Netherlands Institute for Radio AstronomyNL418 papers
- Osservatorio Astronomico di PadovaIT411 papers
- Osservatorio astronomico di BolognaIT398 papers
- California Institute of TechnologyUS397 papers
18 papers · 2 filters
Fundamental physics with Espresso: Towards an accurate wavelength calibration for a precision test of the fine-structure constant
Tobias M. Schmidt, Paolo Molaro, Michael T. Murphy +56
Observations of metal absorption systems in the spectra of distant quasars allow to constrain a possible variation of the fine-structure constant throughout the history of the Univ…
The LOFAR Two Meter Sky Survey: Deep Fields, I -- Direction-dependent calibration and imaging
C. Tasse, T. Shimwell, M. J. Hardcastle +29
The Low Frequency Array (LOFAR) is an ideal instrument to conduct deep extragalactic surveys. It has a large field of view and is sensitive to large scale and compact emission. It…
Unveiling the rarest morphologies of the LOFAR Two-metre Sky Survey radio source population with self-organised maps
Rafaël I. J. Mostert, Kenneth J. Duncan, Huub J. A. Röttgering +11
The Low Frequency Array (LOFAR) Two-metre Sky Survey (LoTSS) is a low-frequency radio continuum survey of the Northern sky at an unparalleled resolution and sensitivity. In order t…
Spectral index of the Galactic foreground emission in the 50-87 MHz range
Marta Spinelli, Gianni Bernardi, Hugh Garsden +4
Total-power radiometry with individual meter-wave antennas is a potentially effective way to study the Cosmic Dawn () through measurement of sky brightness arising from th…
Square Kilometre Array Science Data Challenge 1: analysis and results
A. Bonaldi, T. An, M. Bruggen +42
As the largest radio telescope in the world, the Square Kilometre Array (SKA) will lead the next generation of radio astronomy. The feats of engineering required to construct the t…
Characterizing the accuracy of ALMA linear-polarization mosaics
Charles L. H. Hull, Paulo C. Cortes, Valentin J. M. Le Gouellec +9
We characterize the accuracy of linear-polarization mosaics made using the Atacama Large Millimeter/submillimeter Array (ALMA). First, we observed the bright, highly linearly polar…
The Herschel SPIRE Fourier Transform Spectrometer Spectral Feature Finder I. The Spectral Feature Finder and Catalogue
R. Hopwood, I. Valtchanov, Locke D. Spencer +11
We provide a detailed description of the Herschel-SPIRE Fourier Transform Spectrometer (FTS) Spectral Feature Finder (FF). The FF is an automated process designed to extract signif…
Methods for detection and analysis of weak radio sources with single-dish radio telescopes
M. Marongiu, A. Pellizzoni, E. Egron +13
The detection of mJy/sub-mJy point sources is a significant challenge for single-dish radio telescopes. Detection or upper limits on the faint afterglow from GRBs or other sources…
Measuring HERA's primary beam in-situ: methodology and first results
Chuneeta D. Nunhokee, Aaron R. Parsons, Nicholas S. Kern +64
The central challenge in 21~cm cosmology is isolating the cosmological signal from bright foregrounds. Many separation techniques rely on the accurate knowledge of the sky and the…
A novel approach to visibility-space modelling of interferometric gravitational lens observations at high angular resolution
Devon Powell, Simona Vegetti, John P. McKean +3
We present a new gravitational lens modelling technique designed to model high-resolution interferometric observations with large numbers of visibilities without the need to pre-av…
The Northern Cross Fast Radio Burst project. I. Overview and pilot observations at 408 MHz
Nicola T. Locatelli, Gianni Bernardi, Germano Bianchi +8
Fast radio bursts remain one of the most enigmatic astrophysical sources. Observations have significantly progressed over the last few years, thanks to the capabilities of new radi…
Decoherence in LOFAR-VLBI Beamforming
E. Bonnassieux, A. Edge, L. Morabito +1
We show that the use of a superstation (a phased array created using multiple stations of an interferometric array) created in post-processing for LOFAR-VLBI observations introduce…
Performance analysis of the Karhunen-Loève Transform for artificial and astrophysical transmissions: denoising and detection
Matteo Trudu, Maura Pilia, Gregory Hellbourg +6
In this work, we propose a new method of computing the Karhunen-Loève Transform (KLT) applied to complex voltage data for the detection and noise level reduction in astronomical si…
Redundant-Baseline Calibration of the Hydrogen Epoch of Reionization Array
Joshua S. Dillon, Max Lee, Zaki S. Ali +76
In 21 cm cosmology, precision calibration is key to the separation of the neutral hydrogen signal from very bright but spectrally-smooth astrophysical foregrounds. The Hydrogen Epo…
Signal Processing Firmware for the Low Frequency Aperture Array
Gianni Comoretto, Riccardo Chiello, Matt Roberts +22
The signal processing firmware that has been developed for the Low Frequency Aperture Array component of the Square Kilometre Array is described. The firmware is implemented on a d…
Variability and transient search in the SUDARE-VOICE field: a new method to extract the light curves
Dezi Liu, Wenqiang Deng, Zuhui Fan +12
The VST Optical Imaging of the CDFS and ES1 Fields (VOICE) Survey, in synergy with the SUDARE survey, is a deep optical imaging of the CDFS and ES1 fields using the VLT Surv…
Imaging and Modeling Data from the Hydrogen Epoch of Reionization Array
C. L. Carilli{1, 2}, N. Thyagarajan{1} +43
We analyze data from the Hydrogen Epoch of Reionization Array. This is the third in a series of papers on the closure phase delay-spectrum technique designed to detect the HI 21cm…
A flat-spectrum flare in S4 0444+63 revealed by a new implementation of multi-wavelength single-dish observations
Marcello Giroletti, Simona Righini
Relativistic amplification boosts the contribution of the jet base to the total emission in blazars, thus making single dish observations useful and practical to characterise their…