IDIA

Direction Dependent Corrections in Polarimetric Radio Imaging III: A-to-Z Solver — Modeling the full Jones antenna aperture illumination pattern

In this third paper of a series describing direction dependent corrections for polarimetric radio imaging, we present the the A-to-Z solver methodology to model the full Jones antenna aperture illumination pattern (AIP) with Zernike polynomials. In order to achieve thermal noise limited imaging with modern radio interferometers, it is necessary to correct for the instrumental …

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New group of galaxies discovered by the MIGHTEE team

When the science world decided to embark on the Square Kilometre Array (SKA) project, serendipitous discovery – essentially chance findings – was boldly cited as a scientific goal.  The MeerKAT telescope is already proving this bet right, as new, previously unidentified galaxies were discovered by the MIGHTEE project team in a well-studied area in the sky. …

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UWC Astro members elected to IAU committees

The International Astronomical Union recently held its elections for members to lead the various scientific bodies organised as divisions and commissions. UWC Astronomy members Carolina Odman (IDIA) and Lucia Marchetti (former postdoc, now at UCT) were elected to Commission C2 “Communicating Astronomy to the Public” and Division J “Galaxies and Cosmology” respectively. We congratulate them …

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Young scientist has her eyes firmly fixed on the stars

Astrophysics student Nicole Thomas, who is completing her PhD at the University of the Western Cape’s Department of Physics and Astronomy, was selected to attend the 69th Nobel Laureate Meeting in Lindau, Germany, in 2019. Nicole, one of our students, is interviewed in UWC’s latest 360º Perspectives Magazine (p.24-25) – a big issue packed with retrospectives and …

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Postdoctoral Fellowships

The Centre for Radio Cosmology (CRC) at UWC is internationally recognised for its research in cosmology using MeerKAT, the Square Kilometre Array (SKA) and other radio and optical/IR telescopes. CRC faculty are involved in MeerKAT and SKA key science, as well as in HERA, HIRAX and the Rubin Observatory (LSST). In 2021, the UWC Astro …

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HELP: The Herschel Extragalactic Legacy Project

We present the Herschel Extragalactic Legacy Project (HELP). This project collates, curates, homogenises, and creates derived data products for most of the premium multi-wavelength extragalactic data sets. The sky boundaries for the first data release cover 1270 deg2 defined by the Herschel SPIRE extragalactic survey fields; notably the Herschel Multi-tiered Extragalactic Survey (HerMES) and the …

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Lenses In VoicE (LIVE): Searching for strong gravitational lenses in the VOICE@VST survey using Convolutional Neural Networks

We present a sample of 16 likely strong gravitational lenses identified in the VST Optical Imaging of the CDFS and ES1 fields (VOICE survey) using Convolutional Neural Networks (CNNs). We train two different CNNs on composite images produced by superimposing simulated gravitational arcs on real Luminous Red Galaxies observed in VOICE. Specifically, the first CNN …

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NSTF “Science Oscars” Will Recognise SA’s Finest – And The UWC Nominees Are…

The National Science and Technology Forum awards were established decades ago to recognise outstanding contributions to science. The University of the Western Cape (UWC) is once again playing its part, with three top UWC scientists being nominated for the 2020/2021 NSTF-South32 Awards. “We are living in interesting and unprecedented times,” said Professor Michael-Davies-Coleman, Dean of UWC’s Faculty …

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RADIOSKY2020 Italy-South Africa Research Programme (ISARP) Virtual Workshop (18 June 2020)

The University of the Western Cape (UWC)/Inter-University Institute for Data Intensive Astronomy (IDIA), Italian National Institute for Astrophysics (INAF-IRA), and the Italian Embassy hosted the RADIOSKY2020 Workshop virtually on 18 June 2020. Find here a summary about the event https://www.idia.ac.za/radiosky2020-italy-south-africa-research-programme-isarp-virtual-workshop and here most presentations https://www.idia.ac.za/radiosky-2020-workshop/ Image Credit: Max Planck Institute for Radio Astronomy, generated by …

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