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This Horizon Study describes a next-generation ground-based gravitational-wave observatory: Cosmic Explorer. With ten times the sensitivity of Advanced LIGO, Cosmic Explorer will push gravitational-wave astronomy towards the edge of the…

Massive multiple-input multiple-output (MIMO) techniques have been recently advanced to tremendously improve the performance of wireless networks. However, the use of very large antenna arrays brings new issues, such as the significantly…

信息论 · 计算机科学 2013-06-07 Yong Zeng , Rui Zhang , Zhi Ning Chen

In 2006 ESO Council authorized a Phase B study of a European AO-telescope with a 42 m segmented primary with a 5-mirror design, the E-ELT. Several reports and working groups have already presented science cases for an E-ELT, specifically…

星系天体物理 · 物理学 2015-05-18 Nils Ryde

We are at the dawn of a new golden age for radio astronomy, with a new generation of facilities under construction and the global community focussed on the Square Kilometre Array as its goal for the next decade. These new facilities offer…

高能天体物理现象 · 物理学 2011-12-13 R. P. Fender , M. E. Bell

The $e$MERLIN Galaxy Evolution Survey ($e$MERGE) is an ambitious, multi-tiered extragalactic radio continuum survey being carried out with $e$MERLIN and the VLA at 1.4GHz and 6GHz. Exploiting the unique combination of high sensitivity and…

星系天体物理 · 物理学 2019-02-08 A. P. Thomson , T. W. B. Muxlow , Ian Smail , I. M McHardy , R. J. Beswick , J. F. Radcliffe , N. Wrigley

In a recent paper (Brown & Battye 2011), we proposed the use of integrated polarization measurements of background galaxies in radio weak gravitational lensing surveys and investigated the potential impact on the statistical measurement of…

宇宙学与河外天体物理 · 物理学 2015-05-27 Michael L. Brown , Richard A. Battye

The European VLBI Network (EVN) is in the process of establishing an e-VLBI array in which the radio telescopes and the EVN correlator at JIVE are connected in real-time, via high-speed national fibre optic networks and the pan-European…

天体物理学 · 物理学 2007-05-23 M. A. Garrett

Global expansion of the Event Horizon Telescope (EHT) will see the strategic addition of antennas at new geographical locations, transforming the sensitivity and imaging fidelity of the $\lambda \sim 1$\,mm EHT array. A possible South…

天体物理仪器与方法 · 物理学 2024-12-11 Senkhosi Simelane , Roger Deane , Athol Kemball , Roelf Botha , Roufurd Julie , Keitumetse Molamu , Adrian Tiplady , Aletha de Witt

To continue the unparalleled success of the Very Large Array (VLA) for radio astronomy, the facility is currently being converted to become the 'Expanded VLA' (EVLA). The EVLA will radically improve the VLA in order to cover the full…

天体物理学 · 物理学 2009-11-13 Juergen Ott , Rick Perley , Michael Rupen , the EVLA team

Holographic MIMO refers to a (possibly large) array with a large number of individually controlled and densely deployed antennas. The objective of this paper is to provide further insight into the use of closely spaced antennas in the…

信息论 · 计算机科学 2024-03-20 Antonio Alberto D'Amico , Luca Sanguinetti

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…

星系天体物理 · 物理学 2017-06-22 Chris Simpson

In radio astronomy, the Ultra-Long Wavelengths (ULW) regime of longer than 10 m (frequencies below 30 MHz), remains the last virtually unexplored window of the celestial electromagnetic spectrum. The strength of the science case for…

天体物理仪器与方法 · 物理学 2018-02-23 Linjie Chen , Amin Aminaei , Leonid I. Gurvits , Marc Klein Wolt , Hamid Reza Pourshaghaghi , Yihua Yan , Heino Falcke

Prospects for future supernova surveys are discussed, focusing on the ESA Euclid mission and the European Extremely Large Telescope(E-ELT), both expected to be in operation around the turn of the decade. Euclid is a 1.2m space survey…

宇宙学与河外天体物理 · 物理学 2015-06-12 I. M. Hook

Up to 100,000 satellites could be launched into Low Earth Orbit (LEO) in the coming decade. Assuming the two most advanced companies' plans are realised, close to 80,000 satellites will be present at a variety of altitudes between 328 -…

天体物理仪器与方法 · 物理学 2021-08-10 Andrew Williams , Olivier Hainaut , Angel Otarola , Gie Han Tan , Andrew Biggs , Neil Phillips , Giuliana Rotola

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…

The upcoming Extremely Large Telescopes (ELTs) are expected to have the collecting area required to detect potential biosignature gases in the atmosphere of rocky planets around nearby low-mass stars. Some efforts are currently focusing on…

We present a proposal for the construction and development of a new instrument for radio astronomical observations based on interferometric techniques, that will provide high angular resolution in the 21 cm band, with the intention of…

In recent years, a large number of geosynchronous satellites are being planned to provide augmentation services for enhancing the precision to global positioning systems, e.g., GPS, in applications such as aircraft landing. In this paper,…

空间物理 · 物理学 2011-09-23 C. R. Subrahmanya , Peeyush Prasad , R. Somashekar

Starlink and alike have attracted a lot of attention recently, however, the inner working of these low-earth-orbit (LEO) satellite networks is still largely unknown. This paper presents an ongoing measurement campaign focusing on Starlink,…

网络与互联网体系结构 · 计算机科学 2023-07-14 Jianping Pan , Jinwei Zhao , Lin Cai