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Achieving high-rate communication with accurate localization and wireless environment sensing has emerged as an important trend of beyond-fifth and sixth generation cellular systems. Extension of the antenna array to an extremely large…

信息论 · 计算机科学 2020-12-22 Jie Yang , Yong Zeng , Shi Jin , Chao-Kai Wen , Pingping Xu

We review the results from {\it Mariner 10} regarding Mercury's gravity field and the results from radar ranging regarding topography. We discuss the implications of improving these results, including a determination of the polar component,…

Multiple low-Earth orbit satellite constellations, aimed at beaming broadband connectivity from space, are currently under active deployment. While such space-based Internet is set to augment, globally, today's terrestrial connectivity, and…

网络与互联网体系结构 · 计算机科学 2023-07-26 Aryan Taneja , Debopam Bhattacherjee , Saikat Guha , Venkata N. Padmanabhan

We investigate the capability of various configurations of the space interferometer eLISA to probe the late-time background expansion of the universe using gravitational wave standard sirens. We simulate catalogues of standard sirens…

宇宙学与河外天体物理 · 物理学 2017-03-09 Nicola Tamanini , Chiara Caprini , Enrico Barausse , Alberto Sesana , Antoine Klein , Antoine Petiteau

A surface array of radio antennas will enhance the performance of the IceTop array and enable new, complementary science goals. First, the accuracy for cosmic-ray air showers will be increased since the radio array provides a calorimetric…

天体物理仪器与方法 · 物理学 2019-09-25 Frank G. Schröder

Radio astronomy observations in the coming decade will require new levels of sensitivity while mapping large regions of space with much greater efficiency than is achieved with current telescopes. This requires new instrumentation with the…

天体物理仪器与方法 · 物理学 2009-09-30 Matthew A. Morgan , J. Richard Fisher

The programme Earth AntineutRino TomograpHy (EARTH) proposes to build ten underground facilities each hosting a telescope. Each telescope consists of many detector modules, to map the radiogenic heat sources deep in the interior of the…

地球物理 · 物理学 2009-11-13 R. J. de Meijer , F. D. Smit , F. D. Brooks , R. W. Fearick , H. J. Woertche , F. Mantovani

Einstein Telescope (ET) is a planned third generation gravitational waves detector located in Europe. Its design will be different from currently build interferometers, because ET will consist of three interferometers rotated by a 60 deg…

宇宙学与河外天体物理 · 物理学 2015-05-25 I. Kowalska-Leszczynska , T. Bulik

Measurements of redshifted 21-cm emission of neutral hydrogen at <30 MHz have the potential to probe the cosmic "dark ages," a period of the universe's history that remains unobserved to date. Observations at these frequencies are…

Sixth generation (6G) wireless networks are envisioned to include aspects of energy footprint reduction (sustainability), besides those of network capacity and connectivity, at the design stage. This paradigm change requires radically new…

In the near future, the Expanded Very Large Array (EVLA) will allow surveys for maser sources with unprecedented sensitivity, spectral coverage and spectroscopic capabilities. In particular, comprehensive surveys for many maser species with…

天体物理学 · 物理学 2009-11-13 Karl M. Menten

In this paper, the first in a series of four articles, the scientific goals of the Metron project are highlighted, and the characteristics of the cosmic objects available for study within its framework are provided. The Metron…

宇宙学与河外天体物理 · 物理学 2024-07-16 V. K. Dubrovich , S. I. Grachev , Yu. N. Eroshenko , S. I. Shirokov , G. G. Valyavin

This document describes some of the fundamental astrophysical problems that require observing capabilities at millimeter- and centimeter wavelengths well beyond those of existing, or already planned, telescopes. The results summarized in…

The AuScope geodetic Very Long Baseline Interferometry array consists of three new 12 m radio telescopes and a correlation facility in Australia. The telescopes at Hobart (Tasmania), Katherine (Northern Territory) and Yarragadee (Western…

One of the goals of gravitational-wave astronomy is simultaneous detection of gravitational-wave signals from merging compact-object binaries and the electromagnetic transients from these mergers. With the next generation of advanced…

Upcoming cosmic microwave background (CMB) experiments aim to detect primordial gravitational waves with unprecedented sensitivity. Effective foreground removal is essential to avoid biases in the measurement of the tensor-to-scalar ratio…

We present first results from electronic Multi-Element Remotely Linked Interferometer Network (e-MERLIN) and electronic European VLBI Network (e-EVN) observations of a small sample of ultra-steep spectrum radio sources, defined as those…

宇宙学与河外天体物理 · 物理学 2013-02-14 Megan K. Argo , Zsolt Paragi , Huub Röttgering , Hans-Rainer Klöckner , George Miley , Mehreen Mahmud

Modern radio telescopes are favouring densely packed array layouts with large numbers of antennas ($N_\textrm{A}\gtrsim 1000$). Since the complexity of traditional correlators scales as $\mathcal{O}(N_\textrm{A}^2)$, there will be a steep…

天体物理仪器与方法 · 物理学 2017-01-20 Nithyanandan Thyagarajan , Adam P. Beardsley , Judd D. Bowman , Miguel F. Morales