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This thesis reports on the application of new wide-field Very Long Baseline Interferometry (VLBI) imaging techniques using real data for the first time. These techniques are used to target three specific science areas: (i) a…

Astrophysics of Galaxies · Physics 2014-06-19 Emil Lenc

Modern radio astronomy relies on very large amounts of data that need to be transferred between various parts of astronomical instruments, over distances that are often in the range of tens or hundreds of kilometres. The Square Kilometre…

Networking and Internet Architecture · Computer Science 2018-05-01 Przemyslaw Lenkiewicz , P. Chris Broekema , Bernard Metzler

The Large Synoptic Survey Telescope (LSST) is a wide-field imaging system of unprecedented etendue. The initial goal of the project is to carry out a ten year imaging survey in six broad passbands (ugrizy) that cover $350 nm < \lambda < 1.1…

Instrumentation and Methods for Astrophysics · Physics 2019-05-14 Christopher W. Stubbs , Katrin Heitmann

The science cases for incorporating high time resolution capabilities into modern radio telescopes are as numerous as they are compelling. Science targets range from exotic sources such as pulsars, to our Sun, to recently detected possible…

Radio astronomy has benefited greatly from advances in technology and will continue to do so in the future. In fact, we are experiencing a revolution in the way radio astronomy is conducted as our instruments allow us now to directly…

Instrumentation and Methods for Astrophysics · Physics 2010-09-13 Michael Kramer , Ben Stappers

Among the main disadvantages of using silicon photomultipliers (SiPMs) in large experiments are their limited physical area (increasing the cost and the complexity of the readout of a camera) and their sensitivity to unwanted wavelengths.…

Instrumentation and Methods for Astrophysics · Physics 2019-02-20 D. Guberman , J. Cortina , J. E. Ward , E. Do Souto Espiñera , A. Hahn , D. Mazin

Wide bandgap semiconductors have become the most attractive materials in optoelectronics in the last decade. Their wide bandgap and intrinsic properties have advanced the development of reliable photodetectors to selectively detect short…

Applied Physics · Physics 2018-09-21 Ruth A. Miller , Hongyun So , Thomas A. Heuser , Debbie G. Senesky

Single Image Super-Resolution (SISR) is a vital technique for improving the visual quality of low-resolution images. While recent deep learning models have made significant advancements in SISR, they often encounter computational challenges…

Image and Video Processing · Electrical Eng. & Systems 2024-10-29 Chongxiao Liu

Extreme crowding of electromagnetic spectrum in recent years has led to the challenges in designing sensing and communications systems. Both systems require a broad range of bandwidth, thus resulting in competing interests in exploiting the…

Signal Processing · Electrical Eng. & Systems 2024-02-15 Longfei Yin , Ziang Liu , Bhavani Shankar M. R. , Mohammad Alaee-Kerahroodi , Bruno Clerckx

I present the various capabilities of upgraded and next generation radio telescopes, in particular their ability to detect and image distant star forming galaxies. I demonstrate that e-MERLIN, EVLA and LOFAR can detect systems similar to…

Astrophysics · Physics 2007-05-23 M. A. Garrett

Rydberg-atom sensors convert radiofrequency, microwave and terahertz fields into optical signals with SI-traceable calibration, high sensitivity, and broad tunability. This review assesses their potential for space applications by comparing…

We have used the Very Large Array(VLA) in C configuration to carry out a sensitive 20cm radio survey of regions of sky that have been surveyed in the Far Infra-Red over the wavelength range 5-200 microns with ISO as part of the European…

In the last ten years silicon photomultipliers (SiPMs) have gained terrain in experiments and applications in which photomultiplier tubes have been the dominant photosensors during decades. Imaging Atmospheric Cherenkov Telescopes (IACTs)…

Instrumentation and Methods for Astrophysics · Physics 2020-06-17 D. Guberman , R. Paoletti

The Low Frequency Array (LOFAR) is uniquely able to perform deep, 15" resolutions imaging at frequencies below 100 MHz. Observations in this regime, using the Low Band Antenna (LBA) system, are significantly affected by instrumental and…

Astrophysics of Galaxies · Physics 2026-01-14 J. M. Boxelaar , F. De Gasperin , M. J. Hardcastle , J. H. Croston , L. K. Morabito , R. J. van Weeren , H. Edler

The Spitzer-South Pole Telescope Deep Field (SSDF) is a wide-area survey using Spitzer's Infrared Array Camera (IRAC) to cover 94 square degrees of extragalactic sky, making it the largest IRAC survey completed to date outside the Milky Way…

The sixth generation (6G) communication networks are featured by integrated sensing and communications (ISAC), revolutionizing base stations (BSs) and terminals. Additionally, in the unfolding 6G landscape, a pivotal physical layer…

Signal Processing · Electrical Eng. & Systems 2024-10-01 Kaiqian Qu , Shuaishuai Guo , Jia Ye , Nasir Saeed

This paper investigates a coordinated multi-cell integrated sensing, communication, and powering (ISCAP) system operating in the electromagnetic near field, where each base station (BS) employs an extremely large-scale antenna array (ELAA)…

Networking and Internet Architecture · Computer Science 2026-01-06 Yuan Guo , Yilong Chen , Zixiang Ren , Derrick Wing Kwan Ng , Jie Xu

Quantitative spectroscopy of O-type stars in galaxies beyond 1 Mpc requires the unprecedented sensitivity of the so-called Extremely Large Telescopes. Visible spectroscopy with these exciting new facilities will give us the first chance to…

Solar and Stellar Astrophysics · Physics 2018-10-04 C. J. Evans , O. H. Ramirez-Agudelo , M. Garcia , M. Puech , Y. Yang

This paper proposes a monostatic wideband system for integrated sensing and communication (ISAC) at millimeter-wave frequencies, based on multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM). The system…

Signal Processing · Electrical Eng. & Systems 2026-02-23 Tommaso Bacchielli , Lorenzo Pucci , Andrea Giorgetti

The upcoming Square Kilometer Array (SKA) will set a new standard regarding data volume generated by an astronomical instrument, which is likely to challenge widely adopted data-analysis tools that scale inadequately with the data size. The…

Instrumentation and Methods for Astrophysics · Physics 2024-10-09 D. Cornu , P. Salomé , B. Semelin , A. Marchal , J. Freundlich , S. Aicardi , X. Lu , G. Sainton , F. Mertens , F. Combes , C. Tasse
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