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dc.contributor.authorBignall, Hayley E.
dc.contributor.authorJauncey, David L.
dc.contributor.authorLovell, James E. J.
dc.contributor.authorOjha, Roopesh
dc.contributor.authorReynolds, Cormac
dc.date.accessioned2020-04-30T17:46:51Z
dc.date.available2020-04-30T17:46:51Z
dc.date.issued2010
dc.descriptionIVS 2010 General Meeting Proceedingsen_US
dc.description.abstractVLBI observations of intraday variable (IDV) quasars found in the MASIV (Micro-Arcsecond Scintillation-Induced Variability) 5 GHz VLA Survey of 500 flat-spectrum sources in the northern sky have shown that these sources are extremely compact, often unresolved, on milliarcsecond scales, and more core-dominated than their non-IDV counterparts. VAST: an ASKAP Survey for Variables and Slow Transients, proposes to observe 10,000 square degrees of southern sky daily for 2 years in the VAST-Wide survey component. This is expected to reveal of order 30,000 compact sources brighter than 10 mJy showing refractive interstellar scintillation (the cause of centimeter-wavelength IDV) at the survey frequency of about 1.4 GHz. Many of these sources may be suitable astrometric calibrators for VLBI at higher frequencies.en_US
dc.description.urihttps://ivscc.gsfc.nasa.gov/publications/gm2010/bignall.pdfen_US
dc.format.extent5 pagesen_US
dc.genreconference papers and proceedingsen_US
dc.identifierdoi:10.13016/m2nojq-mcgx
dc.identifier.citationBignall, Hayley E.; Jauncey, David L.; Lovell, James E. J.; Ojha, Roopesh; Reynolds, Cormac; Finding Extremely Compact Sources Using the ASKAP VAST Survey; IVS 2010 General Meeting Proceedings, p.325–329 (2010); https://ivscc.gsfc.nasa.gov/publications/gm2010/bignall.pdfen_US
dc.identifier.urihttp://hdl.handle.net/11603/18386
dc.language.isoen_USen_US
dc.publisherIVS Publicationsen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Physics Department Collection
dc.relation.ispartofUMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis is a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleFinding Extremely Compact Sources Using the ASKAP VAST Surveyen_US
dc.typeTexten_US


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This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
Except where otherwise noted, this item's license is described as This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.