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An important design decision for the first phase of the Square Kilometre Array is whether the low frequency component (SKA1-low) should be implemented as a single or dual-band aperture array; that is, using one or two antenna element…

天体物理仪器与方法 · 物理学 2012-03-14 T. M. Colegate , P. J. Hall , A. W. Gunst

Radio astronomy is transitioning to a big-data era due to the emerging generation of radio interferometric (RI) telescopes, such as the Square Kilometre Array (SKA), which will acquire massive volumes of data. In this article we review…

天体物理仪器与方法 · 物理学 2020-04-15 Xiaohao Cai , Luke Pratley , Jason D. McEwen

The upcoming Square Kilometre Array (SKA) radio telescope will become the largest astronomical observation facility, and is expected to introduce revolutionary changes in major fields of natural sciences. These revolutionary changes help us…

天体物理仪器与方法 · 物理学 2019-01-24 Tao An

Most of the pulsar science case with the Square Kilometre Array (SKA) depends on long-term precision pulsar timing of a large number of pulsars, as well as astrometric measurements of these using very long baseline interferometry (VLBI).…

The Square Kilometre Array (SKA) is a planned large radio interferometer designed to operate over a wide range of frequencies, and with an order of magnitude greater sensitivity and survey speed than any current radio telescope. The SKA…

The Square Kilometre Array (SKA) project is an international effort to build the world s largest radio telescope, enabling science with unprecedented detail and survey speed. The project spans over a decade and is now at a mature stage,…

The Square Kilometre Array (SKA) is the next generation radio telescope distinguished by a superb sensitivity due to its large aperture (about one square kilometre) and advanced instrumentation. It will cover a broad range of observing…

天体物理仪器与方法 · 物理学 2020-02-25 J. G. Bij de Vaate , L. I. Gurvits , S. V. Pogrebenko , C. G. M. van t Klooster

The advent of large aperture arrays, such as the currently under construction Square Kilometer Array (SKA), allows for observing the universe in the radio-spectrum at unprecedented resolution and sensitivity. However, these telescopes…

天体物理仪器与方法 · 物理学 2024-12-04 S. Wang , S. Prunet , S. Mignot , A. Ferrari

The Square Kilometre Array (SKA) is expected to start science operations in 2030 and by that time there could be up to 10$^5$ artificial satellites in Earth's orbit, comprising an increase of an order of magnitude compared to 2024. Most of…

天体物理仪器与方法 · 物理学 2026-04-27 Nicolas Cerardi , Emma Tolley , Federico di Vruno

Backed by advances in digital electronics, signal processing, computation, and storage technologies, aperture arrays, which had strongly influenced the design of telescopes in the early years of radio astronomy, have made a comeback. Amid…

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;…

宇宙学与河外天体物理 · 物理学 2016-10-26 Anna Bonaldi , Ian Harrison , Stefano Camera , Michael L. Brown

In radio interferometry, observed visibilities are intrinsically sampled at some interval in time and frequency. Modern interferometers are capable of producing data at very high time and frequency resolution; practical limits on storage…

天体物理仪器与方法 · 物理学 2016-07-15 M. T. Atemkeng , O. M. Smirnov , C. Tasse , G. Foster , J. Jonas

The Square Kilometre Array (SKA) is a planned radio interferometer of unprecedented scale that will revolutionize low-frequency radio astronomy when completed. In particular, one of its core science drivers is the systematic mapping of the…

宇宙学与河外天体物理 · 物理学 2022-01-11 Nichole Barry , Gianni Bernardi , Bradley Greig , Nicholas Kern , Florent Mertens

Advanced millimeter-wave software-defined array (SDA) platforms, or testbeds at affordable costs and high performance are essential for the wireless community. In this paper, we present a low-cost, portable, and programmable SDA that allows…

系统与控制 · 电气工程与系统科学 2024-09-19 Ashwini Pondeycherry Ganesh , Anthony Perre , Alphan Sahin , Ismail Guvenc , Brian A. Floyd

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…

天体物理仪器与方法 · 物理学 2021-12-28 Ying Mei , Shoulin Wei , Feng Wang , Chen Wu , Rodrigo Tobar , Mohsim Shaikh , Hui Deng , Wei Dai , Bo Liang , Andreas Wicenec

Optimizing data-intensive workflow execution is essential to many modern scientific projects such as the Square Kilometre Array (SKA), which will be the largest radio telescope in the world, collecting terabytes of data per second for the…

分布式、并行与集群计算 · 计算机科学 2018-05-22 Chen Wu , Andreas Wicenec , Rodrigo Tobar

The SKA will be the largest radio astronomy observatory ever built, providing unprecedented sensitivity over a very broad frequency (50 MHz to 15.3 GHz). The SKA-Low (50 - 350 MHz), will be built at the MRO in Western Australia. It will…

天体物理仪器与方法 · 物理学 2022-04-20 M. Sokolowski , S. J. Tingay , D. B. Davidson , R. B. Wayth , D. Ung , J. W. Broderick , B. Juswardy , M. Kovaleva , G. Macario , G. Pupillo , A. Sutinjo

Future observations of 21 cm emission from neutral hydrogen survey will become a promising approach to probe the large scale structure of Universe. In this paper, we investigate the impacts of Square Kilometer Array (SKA) 21 cm observation…

宇宙学与河外天体物理 · 物理学 2019-11-12 Jing-Fei Zhang , Li-Yang Gao , Dong-Ze He , Xin Zhang

The low-frequency radio telescope of the Square Kilometre Array (SKA) is being built by the international radio astronomical community to (i) have orders of magnitude higher sensitivity and (ii) be able to map the sky several hundred times…

天体物理仪器与方法 · 物理学 2023-05-29 Agaram Raghunathan , Keerthipriya Satish , Arasi Sathyamurthy , T. Prabu , B. S. Girish , K. S. Srivani , Shiv K. Sethi

The Cosmic Dawn was marked by the formation of the first stars, and preceded the Epoch of Reionization (EoR), when the Universe underwent a fundamental transformation caused by the radiation from these first stars and galaxies.…