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RadioAstron is a project to use the 10m antenna on board the dedicated SPEKTR-R spacecraft, launched on 2011 July 18, to perform Very Long Baseline Interferometry from space - Space-VLBI. We describe the strategy and highlight the first…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-14 Kirill V. Sokolovsky

This paper summarizes the design process and metrics for the latest antenna design for 2 radio telescopes, SKALA4 for the SKA1-LOW instrument and the V-feed for the HERA telescope. In the paper we briefly describe the main features of the…

Instrumentation and Methods for Astrophysics · Physics 2020-03-25 Eloy de Lera Acedo , Hardie Pienaar , Nicolas Fagnoni

COMPASS is a fixed-target experiment at the CERN SPS for the investigation of the structure and the dynamics of hadrons. The experimental setup features a large acceptance and high momentum resolution spectrometer including particle…

High Energy Physics - Experiment · Physics 2019-08-13 A. Austregesilo

We have recently suggested a new approach and design of an ultra-sensitive gravity wave detector antenna based on superconductivity. The idea was described in a short paper [1]: http://iopscience.iop.org/1742-6596/507/4/042013, in entries…

Instrumentation and Methods for Astrophysics · Physics 2014-09-24 A. Guliana , J. Foremanb , V. Nikoghosyana , L. Sicaa , J. Tollaksena , S. Nussinov

The field of satellite communications is enjoying a renewed interest in the global telecom market, and very high throughput satellites (V/HTS), with their multiple spot-beams, are key for delivering the future rate demands. In this article,…

Information Theory · Computer Science 2019-07-24 Ana I. Perez-Neira , Miguel Angel Vazquez , Sina Maleki , M. R. Bhavani Shankar , Symeon Chatzinotas

We present an overview of the scientific potential of MATISSE, the Multi Aperture mid-Infrared SpectroScopic Experiment for the Very Large Telescope Interferometer. For this purpose we outline selected case studies from various areas, such…

We have combined high resolution VLBI Space Observatory Programme (VSOP) data at 1.6 and 4.8 GHz with Very Long Baseline Array (VLBA) data at higher frequencies and with similar resolutions to study the spectral properties of the core of…

Astrophysics · Physics 2015-06-24 Richard Dodson , Philip G. Edwards , Hisashi Hirabayashi

With the large number of deep space (DS) missions anticipated by the end of this decade, reliable-high capacity DS communication systems are needed more than ever. Nevertheless, existing DS communication technologies are far from meeting…

Signal Processing · Electrical Eng. & Systems 2023-02-21 Sarah Karmous , Nadia Adem

This paper discusses the broad science case for obtaining milliarcsecond to microarcsecond astronomical imaging resolution in the soft to medium-energy X-ray band (~0.5 to ~8 keV). Astronomy across much of the electromagnetic spectrum has…

Movable antenna (MA) has emerged as a promising technology for improving the performance of wireless communication systems, which enables local movement of the antennas to create more favorable channel conditions. In this letter, we advance…

Signal Processing · Electrical Eng. & Systems 2025-01-16 Nianzu Li , Peiran Wu , Boyu Ning , Lipeng Zhu , Weidong Mei

Radio observations with Very Long Baseline Interferometry (VLBI) provide the highest resolution in astronomy. Combining earth-bound with space-based telescopes and advancing the observations to mm-wavelengths increases the resolution even…

Astrophysics · Physics 2007-05-23 J. A. Zensus , T. P. Krichbaum , S. Britzen

Radio astronomy is entering the era of large surveys. This paper describes the plans for wide surveys with the LOw Frequency ARray (LOFAR) and their synergy with large surveys at higher frequencies (in particular in the 1-2 GHz band) that…

Cosmology and Nongalactic Astrophysics · Physics 2010-01-15 R. Morganti , H. Rottgering , I. Snellen , G. Miley , P. Barthel , P. Best , M. Bruggen , G. Brunetti , K. Chyzy , J. Conway , M. Jarvis , M. Lehnert

We present the Micro-channel X-ray Telescope (MXT), a new narrow-field (about 1{\deg}) telescope that will be flying on the Sino-French SVOM mission dedicated to Gamma-Ray Burst science, scheduled for launch in 2021. MXT is based on square…

Massive Multiple-Input Multiple-Output (MIMO)communications uses a large number of antennas at the base station to increase the data rate and user density in future wireless systems. For simulation, it has become common practice to use…

Information Theory · Computer Science 2018-04-18 Maximilian Arnold , Marc Gauger , Stephan ten Brink

High-resolution imaging of supermassive black holes is now possible, with new applications to testing general relativity and horizon-scale accretion and relativistic jet formation processes. Over the coming decade, the EHT will propose to…

Here follows a preliminary report on the construction of fake millimeter and sub-millimeter skies, as observed by virtual instruments, e.g. the COBRA/SAMBA mission, using theoretical modeling and data extrapolations. Our goal is to create…

Astrophysics · Physics 2009-10-22 F. R. Bouchet , R. Gispert , N. Aghanim , J. R. Bond , A. De Luca , E. Hivon , B. Maffei

At OAB we were, during the year 1998, deeply involved in planning two important space missions for which very large ground based telescopes, VLT in particular, would play a very large and important role in the optical followup. The study of…

Astrophysics · Physics 2009-10-31 Guido Chincarini

The recent explosive growth of small satellite operations driven primarily from an academic or pedagogical need, has demonstrated the viability of commercial-off-the-shelf technologies in space. They have also leveraged and shown the need…

Instrumentation and Detectors · Physics 2016-07-20 André G. C. Guerra , Frederico Francisco , Jaime Villate , Fernando Aguado Agelet , Orfeu Bertolami , Kanna Rajan

AcubeSAT is an open-source CubeSat mission aiming to explore the effects of microgravity and radiation on eukaryotic cells using a compact microfluidic LoC platform. It is developed by SpaceDot, a volunteer, interdisciplinary student team…

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