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The CHARA Array is the longest baseline optical interferometer in the world. Operated with natural seeing, it has delivered landmark sub-milliarcsecond results in the areas of stellar imaging, binaries, and stellar diameters. However, to…

With the evolution of radio astronomy, related education and training, the demand for scalable, efficient, and remote systems in data acquisition, storage, and analysis has significantly increased. Addressing this need, we have developed a…

天体物理仪器与方法 · 物理学 2025-02-18 Anumanchi Agastya Sai Ram Likhit , Katta Naveen , B Arul Pandian , R Abhishek , Thiagaraj Prabu

The Square Kilometre Array (SKA) is an international initiative for developing the world's largest radio telescope with a total collecting area of over a million square meters. The scale of the operation, combined with the remote location…

性能 · 计算机科学 2021-11-11 Karel Adámek , Jan Novotný , Jeyarajan Thiyagalingam , Wesley Armour

Aperture array interferometers, such as that proposed for the Square Kilometre Array (SKA), will see the entire sky, hence the standard approach to simulating visibilities will not be applicable since it relies on a tangent plane…

天体物理学 · 物理学 2008-09-11 J. D. McEwen , A. M. M. Scaife

The Square Kilometre Array (SKA), with the aim of achieving a collecting area of one square kilometre, will be the world's largest radio telescope. A scientific collaboration between 12 countries (with more to join), it will consist of one…

天体物理仪器与方法 · 物理学 2019-03-21 Cristina García-Miró , Antonio Chrysostomou , Zsolt Paragi , Ilse van Bemmel

SKA-MID surveys will be the first in the radio domain to achieve clearly sub-arcsecond resolution at high sensitivity over large areas, opening new science applications for galaxy evolution. To investigate the potential of these surveys, we…

As the demand for software to support the processing and analysis of massive radio astronomy datasets increases in the era of the SKA, we demonstrate the interactive workflow building, data mining, processing, and visualisation capabilities…

天体物理仪器与方法 · 物理学 2022-07-14 Dylan Grigg , Steven Tingay , Marcin Sokolowski , Randall Wayth

Up to now, the completion of an ALMA interferometric observation is determined based on the achievement of a given shape and size of the synthesized beam and the noise RMS in the representative spectral range. This approach with respect to…

天体物理仪器与方法 · 物理学 2020-12-17 Dirk Petry , María Díaz Trigo , Rüdiger Kneissl , Ignacio Toledo , Stefano Facchini

The Square Kilometre Array (SKA) is a planned multi purpose radio telescope with a collecting area approaching 1 million square metres. One of the key science objectives of the SKA is to provide exquisite strong-field tests of gravitational…

天体物理学 · 物理学 2015-05-13 R. Smits , M. Kramer , B. Stappers , D. R. Lorimer , J. Cordes , A. Faulkner

Stacking as a tool for studying objects that are not individually detected is becoming popular even for radio interferometric data, and will be widely used in the SKA era. Stacking is typically done using imaged data rather than directly…

天体物理仪器与方法 · 物理学 2015-01-26 K. K. Knudsen , L. Lindroos , W. Vlemmings , J. Conway , I. Marti-Vidal

The Square Kilometre Array's Low Frequency instrument (SKA-LOW) will be the most sensitive aperture array ever used for radio astronomy, and will operate in the under-sampled regime for most of the frequency band where grating-lobes pose…

天体物理仪器与方法 · 物理学 2016-12-28 Benjamin Mort , Fred Dulwich , Nima Razavi-Ghods , Eloy de Lera Acedo , Keith Grainge

We discuss the advantages which the next generation interferometer SKA (the Square Kilometer Array) will bring for Very Long Baseline Interferometry (VLBI) at centimeter wavelengths. With a sensitivity to micro-Jy level flux density, a…

天体物理学 · 物理学 2007-05-23 T. P. Krichbaum , A. Witzel , J. A. Zensus

We present a new algorithm for stacking radio interferometric data in the uv-domain. The performance of uv-stacking is compared to the stacking of fully imaged data using simulated Atacama Large Millimeter/sub-millimeter Array (ALMA) and…

星系天体物理 · 物理学 2015-06-23 Lukas Lindroos , K. K. Knudsen , W. Vlemmings , J. Conway , I. Martí-Vidal

Next-generation radio interferometers, such as the Square Kilometre Array (SKA), will revolutionise our understanding of the universe through their unprecedented sensitivity and resolution. However, standard methods in radio interferometry…

天体物理仪器与方法 · 物理学 2017-02-23 Luke Pratley , Jason D. McEwen , Mayeul d'Avezac , Rafael E. Carrillo , Alexandru Onose , Yves Wiaux

The low frequency component of the Square Kilometre Array (SKA1-Low) will be an aperture phased array located at the Murchison Radio-astronomy Observatory (MRO) site in Western Australia. It will be composed of 512 stations, each of them…

As of 2023, the Square Kilometre Array will constitute the world's largest radio telescope, offering unprecedented capabilities for a diverse science programme in radio astronomy. At the same time, the SKA will be ideally suited to detect…

天体物理仪器与方法 · 物理学 2015-08-17 T. Huege , J. D. Bray , S. Buitink , R. Dallier , R. D. Ekers , H. Falcke , A. Haungs , C. W. James , L. Martin , B. Revenu , O. Scholten , F. G. Schröder , A. Zilles

The next generation of very long baseline interferometry (VLBI) is stepping into the era of microarcsecond ($\mu$as) astronomy, and pushing astronomy, especially astrometry, to new heights. VLBI with the Square Kilometre Array (SKA),…

星系天体物理 · 物理学 2024-04-24 Yingjie Li , Ye Xu , Jingjing Li , Shuaibo Bian , Zehao Lin , Chaojie Hao , Dejian Liu

The requirements on the stability of the frequency reference in the Square Kilometre Array (SKA), as a radio astronomy interferometer, are given in terms of maximum accepted degree of coherence loss caused by the instability of the…

天体物理仪器与方法 · 物理学 2018-01-18 Bassem Alachkar , Althea Wilkinson , Keith Grainge

The SuperCLuster Assisted Shear Survey (SuperCLASS) is a legacy programme using the e-MERLIN interferometric array. The aim is to observe the sky at L-band (1.4 GHz) to a r.m.s. of 7 uJy per beam over an area of ~1 square degree centred on…