VLBA Snap-Shot Imaging of Scintillating Sources

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dc.contributor.authorOjha, Roopesh
dc.contributor.authorLovell, James E.
dc.contributor.authorJauncey, David L.
dc.contributor.authorKedziora-Chudczer, Lucyna
dc.contributor.authorBignall, Hayley E.
dc.contributor.authorReynolds, John E.
dc.contributor.authorTzioumis, Anastasios K.
dc.contributor.authorMacquart, Jean-Pierre
dc.contributor.authorFey, Alan L.
dc.contributor.authorJohnston, Kenneth J.
dc.date.accessioned2020-04-28T16:13:01Z
dc.date.available2020-04-28T16:13:01Z
dc.date.issued2005
dc.descriptionFuture Directions in High Resolution Astronomy: The 10th Anniversary of the VLBA ASP Conference Series, Vol. 340, 2005 J. D. Romney and M. J. Reid (eds.)en_US
dc.description.abstractWe present VLBA snap-shot images of weak scintillating sources and compare their morphologies with those of strong scintillating sources imaged by the USNO astrometry program. It is now clear that interstellar scintillation (ISS) is the principal cause of the intra-day variability (IDV) seen in some compact, flat-spectum radio sources at centimeter wavelengths. The MASIV (Micro Arcsecond Scintillation Induced Variability) survey has been looking for new scintillating radio sources. One result from this survey is that the fraction of scintillating sources increases strongly with decreasing flux density. Here we address the possibility that the above MASIV result arises because we are seeing different mas morphologies among the weaker sources.en_US
dc.description.urihttp://aspbooks.org/custom/publications/paper/340-0449.htmlen_US
dc.format.extent3 pagesen_US
dc.genreconference paper and proceedingsen_US
dc.identifierdoi:10.13016/m2xm9q-lh7d
dc.identifier.citationOjha, Roopesh; Lovell, James E.; Jauncey, David L.; Kedziora-Chudczer, Lucyna; Bignall, Hayley E.; Reynolds, John E.; Tzioumis, Anastasios K.; Macquart, Jean-Pierre; VLBA Snap-Shot Imaging of Scintillating Sources; Future Directions in High Resolution Astronomy: The 10th Anniversary of the VLBA (2005); http://aspbooks.org/custom/publications/paper/340-0449.htmlen_US
dc.identifier.urihttp://hdl.handle.net/11603/18354
dc.language.isoen_USen_US
dc.publisherAstronomical Society of the Pacific Conference Seriesen_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 work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore 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.titleVLBA Snap-Shot Imaging of Scintillating Sourcesen_US
dc.typeTexten_US

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