Conveners
Surveys
- Tessa Vernstrom (CSIRO)
Surveys
- Stefan Duchesne (CSIRO)
We present new wide-field mosaic images of Boötes and Lockman Hole obtained with the Aperture Tile in Focus (Apertif) system of the Westerbork Synthesis Radio Telescope. The images were produced using direction-dependent calibration pipeline, showing a significant quality improvement compared to the ones of the first Apertif data release. The images represent a linear mosaic of hundreds of the...
On behalf of the MMGPS team, I will present preliminary results from the ongoing 3000-h MPIfR MeerKAT Galactic Plane Survey being performed at L and S bands. The survey provides high-fidelity maps at ∼ 20μJy/beam with 5-20′′ resolution. Due to the dense array configuration of MeerKAT and sensitivity towards low surface brightness diffuse emission, we detect a plethora of extended structures....
Radio continuum imaging has been a key approach to trace the production of stars and the activity of supermassive black holes at redshifts 0 < z < 5 --a cosmic epoch marked by the dominant fraction of star formation that is obscured by dust. In recent years, our team has pushed the resolution and sensitivity limits of the Very Large Array (VLA) to obtain some of the deepest and sharpest radio...
The circularly polarised radio sky is a big unknown in astronomy due to the scarcity of sources. It has been shown that objects such as pulsars, brown dwarfs, exoplanets, transient events and AGN can be circularly polarised. The fractions of circular polarisation for most of the detected sources reach some percent at most. Therefore, to examine the composition and characteristics of these...
EMU, the Evolutionary Map of the Universe, is an ongoing ASKAP survey of the southern hemisphere, delivering 943 MHz continuum images with rms noise of about 20 microJy/beam at 15 arcsec resolution. EMU is supporting a broad range of science, spanning star formation and evolution in our own Galaxy, galaxy evolution and the links between star formation and supermassive black holes, to...
The POlarization Sky Survey of the Universe's Magnetism (POSSUM) is ASKAP's large continuum polarization survey, mapping the diffuse polarization of the southern sky in amazing detail and cataloging polarized radio sources and their Faraday rotation. We expect to achieve a 1.5 order of magnitude leap in the sky density of polarized sources compared to currently available data, and a similar...
The Aperture Array Verification System 3 (AAVS3) is a single-station SKA-Low prototype located at Inyarrimanha Ilgari Bundara, the CSIRO Murchison Radio-astronomy Observatory. AAVS3 is a crucial milestone in the SKA-Low project: it is the first instrument owned, operated and maintained by SKAO staff in Australia. Moreover, through the implementation of next-generation prototype digital...
The LOFAR Two-metre Sky Survey is an ongoing deep low frequency survey of the entire northern sky. In 2022 we released LoTSS-DR2 which consisted of images and data products covering about 1/4 of the northern sky. Since then we have gathered a vast amount more data and by mid 2024 LoTSS observations will be over 85% complete with 15,000hrs and 20PB of data recorded. In this talk I shall provide...
The MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) is one of eight approved Large Survey Projects on the MeerKAT Square Kilometre Array (SKA) precursor telescope. It has devoted nearly 2000 hours of MeerKAT time over several years to secure deep imaging at 2 micro-Jy sensitivity covering 20 sq. deg. over a bandwidth of 0.9-1.6 GHz. Alongside, the upgraded Giant...
