The VLBA candels goods-north survey -i. survey design, processing, data products, and source counts

Simple item page
dc.contributor.authorDeane, Roger P.
dc.contributor.authorJarvis, Matthew J.
dc.contributor.authorWhittam, Imogen H.
dc.date.accessioned2025-01-21T10:07:15Z
dc.date.available2025-01-21T10:07:15Z
dc.date.issued2024
dc.description.abstractThe past decade has seen significant advances in wide-field cm-wave very long baseline interferometry (VLBI), which is timely given the wide-area, synoptic survey-driven strategy of major facilities across the electromagnetic spectrum. While wide-field VLBI poses significant post-processing challenges that can severely curtail its potential scientific yield, man y dev elopments in the km-scale connected-element interferometer sphere are directly applicable to addressing these. Here we present the design, processing, data products, and source counts from a deep (11 μJy beam -1 ), quasi-uniform sensitivity, contiguous wide-field (160 arcmin 2 ) 1.6 GHz VLBI surv e y of the CANDELS GOODS-North field. This is one of the best-studied extragalactic fields at milli-arcsecond resolution and, therefore, is well-suited as a comparative study for our Tera-pixel VLBI image. The derived VLBI source counts show consistency with those measured in the COSMOS field, which broadly traces the AGN population detected in arcsecond-scale radio surv e ys. Ho we ver, there is a distinctive flattening in the S 1.4GHz ∼100-500 μJy flux density range, which suggests a transition in the population of compact faint radio sources, qualitatively consistent with the excess source counts at 15 GHz that is argued to be an unmodelled population of radio cores
dc.identifier.citationDeane, R.P., Radcliffe, J.F., Njeri, A., Akoto-Danso, A., Bernardi, G., Smirnov, O.M., Beswick, R., Garrett, M.A., Jarvis, M.J., Whittam, I.H. and Bourke, S., 2024. The VLBA CANDELS GOODS-North Survey–I. survey design, processing, data products, and source counts. Monthly Notices of the Royal Astronomical Society, 529(3), pp.2428-2442.
dc.identifier.urihttps://doi.org/10.1093/mnras/stae253
dc.identifier.urihttps://hdl.handle.net/10566/19861
dc.language.isoen
dc.publisherOxford University Press
dc.subjectgalaxies: active
dc.subjecttechniques: high angular resolution
dc.subjecttechniques: interferometric
dc.subjectData handling
dc.subjectProduct design
dc.titleThe VLBA candels goods-north survey -i. survey design, processing, data products, and source counts
dc.typeArticle

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
deane_the_vlba_candels_goods-north_survey_2024.pdf
Size:
2.26 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Research Articles (Physics)