LOFAR-UK Request for Continued Funding, 2021-2024, and LOFAR2.0 Upgrade

Lead Research Organisation: Durham University
Department Name: Physics

Abstract

Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.

Publications

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Badole S (2022) High-resolution imaging with the International LOFAR Telescope: Observations of the gravitational lenses MG 0751+2716 and CLASS B1600+434 in Astronomy & Astrophysics

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Duncan K (2021) The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1 IV. Photometric redshifts and stellar masses in Astronomy & Astrophysics

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Harwood J (2022) The resolved jet of 3C 273 at 150 MHz Sub-arcsecond imaging with the LOFAR international baselines in Astronomy & Astrophysics

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Jackson N (2022) Sub-arcsecond imaging with the International LOFAR Telescope II. Completion of the LOFAR Long-Baseline Calibrator Survey in Astronomy & Astrophysics

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Macfarlane C (2021) The radio loudness of SDSS quasars from the LOFAR Two-metre Sky Survey: ubiquitous jet activity and constraints on star formation in Monthly Notices of the Royal Astronomical Society

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Morabito L (2022) Identifying active galactic nuclei via brightness temperature with sub-arcsecond international LOFAR telescope observations in Monthly Notices of the Royal Astronomical Society

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Morabito L (2022) Sub-arcsecond imaging with the International LOFAR Telescope I. Foundational calibration strategy and pipeline in Astronomy & Astrophysics

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Petley J (2022) Connecting radio emission to AGN wind properties with broad absorption line quasars in Monthly Notices of the Royal Astronomical Society

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Rankine A (2021) Placing LOFAR-detected quasars in C iv emission space: implications for winds, jets and star formation in Monthly Notices of the Royal Astronomical Society

 
Title LOFAR VLBI common workflow language pipeline 
Description The Low-Frequency Array Very Long Baseline Interferometry (LOFAR-VLBI) pipeline is a calibration and imaging pipeline that includes all of LOFAR's international stations. It looks and solves for delays using an in-field calibrator within the field of view of the pointing. The pipeline provides: solution tables written in a file in the hierarchical data format (version 5), referred to as an h5parm, a self-calibrated, corrected dataset for the in-field calibrator. The delay solutions are applied back to the original data. From there the pipeline can split out smaller datasets in the desired target direction(s) within the field of view. 
Type Of Technology Software 
Year Produced 2023 
Open Source License? Yes  
Impact This is the first working version of the LOFAR-VLBI pipeline in the common workflow language. As a community, LOFAR is moving towards common workflow language for all of its data reduction. This pipeline, although only recently published, can be seamlessly integrated into our production workflows for processing LOFAR-VLBI data. 
URL https://zenodo.org/record/7737402
 
Title LOFAR-VLBI pipeline v4.0.0 
Description This is a new release of the pipeline which processes LOFAR data at high resolution. The pipeline now uses a more robust self-calibration algorithm, which improves the results. 
Type Of Technology Software 
Year Produced 2022 
Open Source License? Yes  
Impact None yet. 
URL https://www.aanda.org/articles/aa/pdf/2022/02/aa40649-21.pdf