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At the IceCube Neutrino Observatory, a Surface Array Enhancement is planned, consisting of 32 hybrid stations, placed within the current IceTop footprint. This surface enhancement will considerably increase the detection sensitivity to…

高能天体物理现象 · 物理学 2021-07-22 Marie Oehler , Roxanne Turcotte-Tardif

Coronal magnetic fields are well known to be one of the crucial parameters defining coronal physics and space weather. However, measuring the global coronal magnetic fields remains challenging. The polarization properties of coronal radio…

太阳与恒星天体物理 · 物理学 2022-07-01 Devojyoti Kansabanik , Divya Oberoi , Surajit Mondal

A spectral line image cube generated from 115 minutes of MWA data that covers a field of view of 400 sq. deg. around the Galactic Centre is used to perform the first Search for ExtraTerrestrial Intelligence (SETI) with the Murchison…

地球与行星天体物理 · 物理学 2016-08-17 S. J. Tingay , C. Tremblay , A. Walsh , R. Urquhart

The rapidly increasing number of satellites in Earth's orbit motivates the development of Space Domain Awareness (SDA) capabilities using wide field-of-view sensor systems that can perform simultaneous detections. This work demonstrates…

天体物理仪器与方法 · 物理学 2023-08-10 S. Prabu , P. Hancock , X. Xiang , S. J. Tingay

The Askaryan Radio Array (ARA) is an ultra-high energy ($>10^{17}$ eV) cosmic neutrino detector in phased construction near the South Pole. ARA searches for radio Cherenkov emission from particle cascades induced by neutrino interactions in…

We test the bandpass smoothness performance of two prototype Square Kilometre Array (SKA) SKA1-Low log-periodic dipole antennas, the SKALA2 and SKALA3 (`SKA Log-periodic Antenna'), and the current dipole from the Murchison Widefield Array…

We study the prospects to measure the cosmic radio dipole by means of continuum surveys with the Square Kilometre Array. Such a measurement will allow a critical test of the cosmological principle. It will test whether the cosmic rest frame…

宇宙学与河外天体物理 · 物理学 2018-10-16 Dominik J. Schwarz , Carlos A. P. Bengaly , Roy Maartens , Thilo M. Siewert

The Square Kilometre Array (SKA) will be the largest radio telescope ever built, aiming to provide collecting area larger than 1 km$^2$. The SKA will have two independent instruments, SKA-LOW comprising of dipoles organized as aperture…

太阳与恒星天体物理 · 物理学 2019-02-13 A. Nindos , E. P. Kontar , D. Oberoi

Radio synchrotron emission is expected as a natural by-product of the self-annihilation of super-symmetric dark matter particles. In this work we discuss the general properties of the radio emission expected in a wide range of dark matter…

宇宙学与河外天体物理 · 物理学 2017-11-16 S. Colafrancesco , P. Marchegiani , G. Beck

The Square Kilometre Array (SKA) project is an international effort to build the world's most sensitive radio telescope operating in the 50 MHz to 14 GHz frequency range. Construction of the SKA is divided into phases, with the first phase…

天体物理仪器与方法 · 物理学 2018-07-31 Sascha Schediwy , David Gozzard

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…

天体物理仪器与方法 · 物理学 2016-03-03 S. A. Torchinsky , A. O. H. Olofsson , B. Censier , A. Karastergiou , M. Serylak , P. Renaud , C. Taffoureau

The Square Kilometre Array (SKA), currently under design, will be a transformational facility for studying the Universe at centimetre and metre wavelengths in the next decade and beyond. This paper provides the current best estimate of the…

天体物理仪器与方法 · 物理学 2020-01-01 Robert Braun , Anna Bonaldi , Tyler Bourke , Evan Keane , Jeff Wagg

The Square Kilometre Array (SKA) is an integral part of the next-generation observatories that will survey the Universe across the electromagnetic spectrum, and beyond, revolutionizing our view of fundamental physics, astrophysics and…

Fast Radio Bursts (FRBs) are short timescale (<<1 s) astrophysical radio signals, presumed to be a signature of cataclysmic events of extragalactic origin. The discovery of six high-redshift events at ~1400 MHz from the Parkes radio…

天体物理仪器与方法 · 物理学 2015-06-17 Cathryn M. Trott , Steven J. Tingay , Randall B. Wayth

The Askaryan Radio Array (ARA) is a five-station, in-ice radio detector located at the South Pole searching for particle cascades from cosmogenic and astrophysical neutrinos with $\geq10^{17}$ eV of energy. Cascades in this energy regime…

高能天体物理现象 · 物理学 2025-09-23 Abigail Bishop , Alan Salcedo Gomez , Marco Stein Muzio

The Square Kilometre Array (SKA) will be sensitive enough to discover all of the pulsars in the Milky Way that are beamed towards Earth. Already in the initial deployment, SKA Phase 1, it will make significant advances in pulsar science. In…

天体物理仪器与方法 · 物理学 2018-08-22 E. F. Keane

High angular resolution observations of discs at mm wavelengths (on scales of a few au) are now commonplace, but there is a current lack of a comparable angular resolution for observations at cm wavelengths. This presents a significant…

Supplemented with suitable buffering techniques, the low-frequency part of the SKA can be used as an ultra-precise detector for cosmic-ray air showers at very high energies. This would enable a wealth of scientific applications: the physics…

天体物理仪器与方法 · 物理学 2015-01-09 T. Huege , J. D. Bray , S. Buitink , R. Dallier , R. D. Ekers , H. Falcke , C. W. James , L. Martin , B. Revenu , O. Scholten , F. G. Schröder

Tests of general relativity (GR) are still in their infancy on cosmological scales, but forthcoming experiments promise to greatly improve their precision over a wide range of distance scales and redshifts. One such experiment, the Square…

宇宙学与河外天体物理 · 物理学 2016-01-25 Philip Bull