Publications associées à Radioastronomie

Quantum radio astronomy: Data encodings and quantum image processing

Jean-Paul Richard Kneib, Emma Elizabeth Tolley, Stefano Corda

We explore applications of quantum computing for radio interferometry and astronomy using recent developments in quantum image processing. We evaluate the suitability of different quantum image representations using a toy quantum computing image reconstruc ...

Elsevier2024

Iterative removal of sources to model the turbulent electromotive force

Abhijit Bhausaheb Bendre

We describe a novel method to compute the components of dynamo tensors from direct magnetohydrodynamic (MHD) simulations. Our method relies upon an extension and generalization of the standard H & ouml;gbom CLEAN algorithm widely used in radio astronomy to ...

Oxford Univ Press2024

Hydrogen Intensity and Real-Time Analysis Experiment: 256-element array status and overview

Jean-Paul Richard Kneib, Emma Elizabeth Tolley, Carolyn Marie Crichton, Zeyu Zhang, Martin Kunz

The Hydrogen Intensity and Real-time Analysis Experiment (HIRAX) is a radio interferometer array currently in development, with an initial 256-element array to be deployed at the South African Radio Astronomy Observatory Square Kilometer Array site in Sout ...

SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS2022

Strong Heuristics for Named Entity Linking

Robert West, Akhil Arora, Marko Culjak, Andreas Oliver Spitz

Named entity linking (NEL) in news is a challenging endeavour due to the frequency of unseen and emerging entities, which necessitates the use of unsupervised or zero-shot methods. However, such methods tend to come with caveats, such as no integration of ...

ASSOC COMPUTATIONAL LINGUISTICS-ACL2022

Microwave or millimeter wave passive components or devices

Romain Christophe Rémy Fleury, Maliheh Khatibi Moghaddam

A passive device comprising a hollow waveguide including first and second wall structures extending in a guiding direction, an interconnecting base extending between the wall structures and an enclosure extending between the wall structures, the enclosure ...

2021

The e-MERGE Survey (e-MERLIN Galaxy Evolution Survey): overview and survey description

Jean-Paul Richard Kneib, Cole Stewart Simpson, Mark Thomas Sargent

We present an overview and description of the e-MERGE Survey (e-MERLIN Galaxy Evolution Survey) Data Release 1 (DR1), a large program of high-resolution 1.5-GHz radio observations of the GOODS-N field comprising similar to 140 h of observations with enhanc ...

OXFORD UNIV PRESS2020

Ultralow-noise photonic microwave synthesis using a soliton microcomb-based transfer oscillator

Tobias Kippenberg, Erwan Guillaume Albert Lucas

The synthesis of ultralow-noise microwaves is of both scientific and technological relevance for timing, metrology, communications and radio-astronomy. Today, the lowest reported phase noise signals are obtained via optical frequency-division using mode-lo ...

NATURE PUBLISHING GROUP2020

Frequency Division Using a Soliton-Injected Semiconductor Gain-Switched Frequency Comb

Tobias Kippenberg, Junqiu Liu, Wenle Weng

By injecting a soliton microcomb into a semiconductor laser that is driven by a sinusoidal current at the subharmonic frequencies of the soliton rate, we demonstrate broadband gain-switched frequency comb generation and low-noise microwave synthesis. (C) 2 ...

IEEE2020

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Radioastronomie

Quantum radio astronomy: Data encodings and quantum image processing

Iterative removal of sources to model the turbulent electromotive force

Hydrogen Intensity and Real-Time Analysis Experiment: 256-element array status and overview

Strong Heuristics for Named Entity Linking

Development and evaluation of galaxy shape measurement algorithms for radio interferometric data

Microwave or millimeter wave passive components or devices

The e-MERGE Survey (e-MERLIN Galaxy Evolution Survey): overview and survey description

Ultralow-noise photonic microwave synthesis using a soliton microcomb-based transfer oscillator

Frequency Division Using a Soliton-Injected Semiconductor Gain-Switched Frequency Comb

Multiwavelength cross-correlation analysis of the simulated cosmic web

Graph Chatbot

Chattez avec Graph Search

Quantum radio astronomy: Data encodings and quantum image processing

Hydrogen Intensity and Real-Time Analysis Experiment: 256-element array status and overview

Frequency Division Using a Soliton-Injected Semiconductor Gain-Switched Frequency Comb

Strong Heuristics for Named Entity Linking

Development and evaluation of galaxy shape measurement algorithms for radio interferometric data

Microwave or millimeter wave passive components or devices

The e-MERGE Survey (e-MERLIN Galaxy Evolution Survey): overview and survey description

Ultralow-noise photonic microwave synthesis using a soliton microcomb-based transfer oscillator