output
19932026
most citedThe Gaia mission

7.1k citations

Showing 2023 · astro-ph.IMShow all

9 papers · 2 filters

astro-ph.IM2023★ 4 cited

Bayesian estimation of cross-coupling and reflection systematics in 21cm array visibility data

Geoff G. Murphy, Philip Bull, Mario G. Santos +76

Observations with radio arrays that target the 21-cm signal originating from the early Universe suffer from a variety of systematic effects. An important class of these are reflect…

astro-ph.IM2023★ 8 cited

1-arcsecond imaging of ELAIS-N1 field at 144MHz using the LoTSS survey with international LOFAR telescope

Haoyang Ye, Frits Sweijen, Reinout van Weeren +10

We present the first wide area (2.5 x 2.5 deg^2) LOFAR High Band Antenna image at a resolution of 1.2'' x 2'' with a median noise of approximately 80 microJy per beam. It was made…

astro-ph.IM2023★ 10 cited

Receiver design for the REACH global 21-cm signal experiment

Ian L. V. Roque, Nima Razavi-Ghods, Steven H. Carey +35

We detail the the REACH radiometric system designed to enable measurements of the 21-cm neutral hydrogen line. Included is the radiometer architecture and end-to-end system simulat…

astro-ph.IM2023★ 31 cited

RMTable2023 and PolSpectra2023: standards for reporting polarization and Faraday rotation measurements of radio sources

C. L. Van Eck, B. M. Gaensler, S. Hutschenreuter +11

Faraday rotation measures (RMs) have been used for many studies of cosmic magnetism, and in most cases having more RMs is beneficial for those studies. This has lead to development…

astro-ph.IM2023★ 6 cited

Matching LOFAR sources across radio bands

Lukas Böhme, Dominik J. Schwarz, Francesco de Gasperin +2

Aims. With the recent preliminary release of the LOFAR LBA Sky Survey (LoLSS), the first wide-area, ultra-low frequency observations from LOFAR were published. Our aim is to combin…

astro-ph.IM2023★ 7 cited

Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders

M. M. Boyce, A. M. Hopkins, S. Riggi +24

We present a comparison between the performance of a selection of source finders using a new software tool called Hydra. The companion paper, Paper~I, introduced the Hydra tool and…

astro-ph.IM2023★ 5 cited

Hydra I: An extensible multi-source-finder comparison and cataloguing tool

M. M. Boyce, A. M. Hopkins, S. Riggi +24

The latest generation of radio surveys are now producing sky survey images containing many millions of radio sources. In this context it is highly desirable to understand the perfo…

astro-ph.IM2023★ 15 cited

Feature Guided Training and Rotational Standardisation for the Morphological Classification of Radio Galaxies

Kevin Brand, Trienko L. Grobler, Waldo Kleynhans +3

State-of-the-art radio observatories produce large amounts of data which can be used to study the properties of radio galaxies. However, with this rapid increase in data volume, it…

astro-ph.IM2023★ 40 cited

The LOFAR LBA Sky Survey II. First data release

F. de Gasperin, H. W. Edler, W. L. Williams +27

The Low Frequency Array (LOFAR) is the only existing radio interferometer able to observe at ultra-low frequencies (<100 MHz) with high resolution (<15") and high sensitivity (<1 m…