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The use of continuum emission radio galaxies as cosmological tracers of the large-scale structure will soon move into a new phase. Upcoming surveys from the Australian Square Kilometre Array Pathfinder (ASKAP), MeerKAT, and the Square…

Cosmology and Nongalactic Astrophysics · Physics 2021-07-28 Jacobo Asorey , David Parkinson

Continuum and HI surveys with the Square Kilometre Array (SKA) will allow us to probe some of the most fundamental assumptions of modern cosmology, including the Cosmological Principle. SKA all-sky surveys will map an enormous slice of…

In order to meet its cutting-edge scientific objectives, the Square Kilometre Array (SKA) telescope requires high-precision frequency references to be distributed to each of its antennas. The frequency references are distributed via…

Instrumentation and Methods for Astrophysics · Physics 2017-06-20 David Gozzard , Sascha Schediwy , Richard Dodson , Maria Rioja , Mike Hill , Brett Lennon , Jock McFee , Peter Mirtschin , Jamie Stevens , Keith Grainge

We construct a pipeline for simulating weak lensing cosmology surveys with the Square Kilometre Array (SKA), taking as inputs telescope sensitivity curves; correlated source flux, size and redshift distributions; a simple ionospheric model;…

Cosmology and Nongalactic Astrophysics · Physics 2016-10-26 Anna Bonaldi , Ian Harrison , Stefano Camera , Michael L. Brown

Galaxy redshift surveys using optical telescopes have, in combination with other cosmological probes, enabled precision measurements of the nature of dark energy. We show that radio telescopes are rapidly becoming competitive with optical…

Cosmology and Nongalactic Astrophysics · Physics 2014-08-07 Alan R. Duffy

Modern radio telescopes will daily generate data sets on the scale of exabytes for systems like the Square Kilometre Array (SKA). Massive data sets are a source of unknown and rare astrophysical phenomena that lead to discoveries.…

Instrumentation and Methods for Astrophysics · Physics 2023-05-08 Steven Ndung'u , Trienko Grobler , Stefan J. Wijnholds , Dimka Karastoyanova , George Azzopardi

In order to deliver the full science potential of the Square Kilometer Array (SKA) telescope, several SKA Regional Centres (SRCs) will be required to be constructed in different SKA member countries around the world. These SRCs will provide…

Instrumentation and Methods for Astrophysics · Physics 2023-02-15 Yogesh Wadadekar , Dipankar Bhattacharya , Abhirup Datta , Surajit Paul , Divya Oberoi

A revolution in radio receiving technology is underway with the development of densely packed phased arrays for radio astronomy. This technology can provide an exceptionally large field of view, while at the same time sampling the sky with…

Instrumentation and Methods for Astrophysics · Physics 2016-03-03 S. A. Torchinsky , A. O. H. Olofsson , B. Censier , A. Karastergiou , M. Serylak , P. Renaud , C. Taffoureau

We study the potential of the Square Kilometre Array in the first phase (SKA1) in detecting dark matter annihilation signals from dwarf spheroidals in the form of diffuse radio synchrotron. Taking the minimal supersymmetric standard model…

High Energy Physics - Phenomenology · Physics 2019-02-06 Arpan Kar , Sourav Mitra , Biswarup Mukhopadhyaya , Tirthankar Roy Choudhury

The study of the Universe on ultra-large scales is one of the major science cases for the Square Kilometre Array (SKA). The SKA will be able to probe a vast volume of the cosmos, thus representing a unique instrument, amongst…

Cosmology and Nongalactic Astrophysics · Physics 2022-09-21 S. Camera , A. Raccanelli , P. Bull , D. Bertacca , X. Chen , P. G. Ferreira , M. Kunz , R. Maartens , Y. Mao , M. G. Santos , P. R. Shapiro , M. Viel , Y. Xu

Next-generation radio arrays, including the Square Kilometre Array (SKA) and its pathfinders, will open up new avenues for exciting transient science at radio wavelengths. Their innovative designs, comprising a large number of small…

Instrumentation and Methods for Astrophysics · Physics 2015-06-15 N. D. R. Bhat , J. N. Chengalur , P. J. Cox , Y. Gupta , J. Prasad , J. Roy , M. Bailes , S. Burke-Spolaor , S. S. Kudale , W. van Straten

The Square Kilometre Array (SKA) project is an international cooperation project to build the largest radio telescope worldwide. Data processing is one of the biggest challenges of building the SKA telescope. As a distributed execution…

Instrumentation and Methods for Astrophysics · Physics 2021-12-28 Ying Mei , Shoulin Wei , Feng Wang , Chen Wu , Rodrigo Tobar , Mohsim Shaikh , Hui Deng , Wei Dai , Bo Liang , Andreas Wicenec

The Square Kilometre Array (SKA) will be operating at the time when several new large optical, X-ray and Gamma-ray facilities are expected to be working. To make SKA both competitive and complementary to these large facilities, thorough…

Instrumentation and Methods for Astrophysics · Physics 2010-01-12 Dharam Vir Lal , Andrei P. Lobanov , Sergio Jiménez-Monferrer

The era of the Square Kilometre Array is almost upon us, and pathfinder telescopes are already in operation. This brief review summarizes our current knowledge of extragalactic radio sources, accumulated through six decades of continuum…

Astrophysics of Galaxies · Physics 2017-06-22 Chris Simpson

The current generation of air shower radio arrays has demonstrated that the atmospheric depth of the shower maximum Xmax can be reconstructed with high accuracy. These experiments are now contributing to mass composition studies in the…

It is an exceptionally opportune time for Astrophysics when a number of next-generation mega-instruments are poised to observe the universe across the entire electromagnetic spectrum with unprecedented data quality. The Square Kilometre…

We investigate the use of next generation radio telescopes such as the Square Kilometre Array (SKA) to detect axion two-photon coupling in the astrophysical environment. The uncertainty surrounding astrophysical magnetic fields presents new…

Cosmology and Nongalactic Astrophysics · Physics 2017-10-31 Katharine Kelley , P. J. Quinn

The Square Kilometre Array (SKA) will operate one of the world's largest continuous scientific data systems, sustaining petascale imaging under strict power envelopes. Current radio-interferometric pipelines typically achieve only 4-14% of…

In recent years, deep learning has been successfully applied in various scientific domains. Following these promising results and performances, it has recently also started being evaluated in the domain of radio astronomy. In particular,…

The Square Kilometre Array Observatory (SKAO) is perhaps the most ambitious radio telescope envisaged yet. It will enable unprecedented studies of the Sun, the corona and the heliosphere and help to answer many of the outstanding questions…

Instrumentation and Methods for Astrophysics · Physics 2023-05-10 Divya Oberoi , Susanta Kumar Bisoi , K. Sasikumar Raja , Devojyoti Kansabanik , Atul Mohan , Surajit Mondal , Rohit Sharma