LADUMA: Looking at the Distant Universe with the MeerKAT Array

Blyth, S. L.; Baker, A. J.; Holwerda, Benne W.; Bassett, Bruce A.; Bershady, Matthew A.; Bouchard, Antoine; Briggs, F.; Catinella, Barbara; Chemin, L.; Crawford, Steven M.; Cress, C. M.; Cunnama, Daniel; Darling, Jeremy; Davé, Romeel; Deane, Roger; Blok, W. J. G. de; Elson, Ed; Faltenbacher, A.; February, Sean; Fernández, Ximena; Frank, B. S.; Gawiser, Eric; Henning, P. A.; Hess, Kelley M.; Heywood, Ian; Hughes, John P.; Jarvis, Matt J.; Kannappan, Sheila J.; Katz, Neal; Kereš, Dušan; Klöckner, H. R.; Kraan-Korteweg, R. C.; Lah, Philip; Lehnert, M.; Leroy, Adam K.; Lochner, Michelle; Maddox, Natasha; Makhathini, S.; Meurer, G. R.; Meyer, Martin; Moodley, Kavilan; Morganti, Raffaella; Obreschkow, Danail; Oh, Se Heon; Oosterloo, Tom; Pisano, D. J.; Popping, Attila; Popping, Gergö; Ravindranath, Swara; Schinnerer, E.; Schröder, Anja; Sheth, Kartik; Skelton, Rosalind E.; Smirnov, O.; Smith, M.; Somerville, Rachel S.; Srianand, R.; Stewart, I. M.; Vaccari, Mattia; Vaïsänen, P.; Heyden, K. J. van der; Driel, W. van; Verheijen, Marc; Walter, Fabian; Wilcots, Eric M.; Williams, T. B.; Woudt, P. A.; Wu, John F.; Zwart, Jonathan T. L.; Rawlings, Steve

doi:10.22323/1.277.0004

Cited by 9 publications

(1 citation statement)

References 52 publications

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“…MeerKAT. Several MeerKAT Large Survey Projects (LSPs) incorporate a polarization component, including in imaging mode: the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) [201]; commensal polarimetry with the deep H I LADUMA (Looking at the Distant Universe with the MeerKAT Array) 10 project [202]; and MHONGOOSE (MeerKAT H I Observations of Nearby Galactic Objects -Observing Southern Emitters) 11 [203]. The MIGHTEE project team is planning complementary observations with the upgraded Giant Metrewave Radio Telescope (GMRT) http://askap.org/possum 8 https://research.csiro.au/quocka/ 9 https://science.nrao.edu/science/surveys/vlass 10 http://www.laduma.uct.ac.za/ 11 https://mhongoose.astron.nl/ to provide combined deep polarimetry of several square degrees with semi-contiguous frequency coverage from 300 − 2500 MHz.…”

Section: Upcoming Magnetism Projectsmentioning

confidence: 99%

Magnetism Science with the Square Kilometre Array

Heald¹,

Mao²,

Vacca³

et al. 2020

Preprint

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The Square Kilometre Array (SKA) will answer fundamental questions about the origin, evolution, properties, and influence of magnetic fields throughout the Universe. Magnetic fields can illuminate and influence phenomena as diverse as star formation, galactic dynamics, fast radio bursts, active galactic nuclei, large-scale structure, and Dark Matter annihilation. Preparations for the SKA are swiftly continuing worldwide, and the community is making tremendous observational progress in the field of cosmic magnetism using data from a powerful international suite of SKA pathfinder and precursor telescopes. In this contribution, we revisit community plans for magnetism research using the SKA, in the light of these recent rapid developments. We focus in particular on the impact that new radio telescope instrumentation is generating, thus advancing our understanding of key SKA magnetism science areas, as well as the new techniques that are required for processing and interpreting the data. We discuss these recent developments in the context of the ultimate scientific goals for the SKA era.

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Section: Upcoming Magnetism Projectsmentioning

confidence: 99%

Magnetism Science with the Square Kilometre Array

Heald¹,

Mao²,

Vacca³

et al. 2020

Preprint

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The Breakthrough Listen Search for Intelligent Life: MeerKAT Target Selection

Czech

Isaacson

Pearce

et al. 2021

PASP

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New radio telescope arrays offer unique opportunities for large-scale commensal SETI surveys. Ethernet-based architectures are allowing multiple users to access telescope data simultaneously by means of multicast Ethernet subscriptions. Breakthrough Listen will take advantage of this by conducting a commensal SETI survey on the MeerKAT radio telescope in South Africa. By subscribing to raw voltage data streams, Breakthrough Listen will be able to beamform commensally anywhere within the field of view during primary science observations. The survey will be conducted with unprecedented speed by forming and processing 64 coherent beams simultaneously, allowing the observation of several million objects within a few years. Both coherent and incoherent observing modes are planned. We present the list of desired sources for observation and explain how these sources were selected from the Gaia DR2 catalog. Given observations planned by MeerKAT's primary telescope users, we discuss their effects on the commensal survey and propose a commensal observing strategy in response. Finally, we outline our proposed approach toward observing one million nearby stars and analyze expected observing progress in the coming years.

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Bursts from Space: MeerKAT – the first citizen science project dedicated to commensal radio transients

Andersson¹,

Lintott²,

Fender³

et al. 2023

Monthly Notices of the Royal Astronomical Society

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The newest generation of radio telescopes is able to survey large areas with high sensitivity and cadence, producing data volumes that require new methods to better understand the transient sky. Here, we describe the results from the first citizen science project dedicated to commensal radio transients, using data from the MeerKAT telescope with weekly cadence. Bursts from Space: MeerKAT was launched late in 2021 and received ∼89 000 classifications from over 1000 volunteers in 3 months. Our volunteers discovered 142 new variable sources which, along with the known transients in our fields, allowed us to estimate that at least 2.1 per cent of radio sources are varying at 1.28 GHz at the sampled cadence and sensitivity, in line with previous work. We provide the full catalogue of these sources, the largest of candidate radio variables to date. Transient sources found with archival counterparts include a pulsar (B1845-01) and an OH maser star (OH 30.1–0.7), in addition to the recovery of known stellar flares and X-ray binary jets in our observations. Data from the MeerLICHT optical telescope, along with estimates of long time-scale variability induced by scintillation, imply that the majority of the new variables are active galactic nuclei. This tells us that citizen scientists can discover phenomena varying on time-scales from weeks to several years. The success both in terms of volunteer engagement and scientific merit warrants the continued development of the project, while we use the classifications from volunteers to develop machine learning techniques for finding transients.

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LADUMA: Looking at the Distant Universe with the MeerKAT Array

Cited by 9 publications

References 52 publications

Magnetism Science with the Square Kilometre Array

Magnetism Science with the Square Kilometre Array

The Breakthrough Listen Search for Intelligent Life: MeerKAT Target Selection

Bursts from Space: MeerKAT – the first citizen science project dedicated to commensal radio transients

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