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The MASIV survey: spectroscopic identifications of compact radio sources


Pursimo, T and Ojha, R and Jauncey, D and Lovell, J and Dutka, M and Bignall, H and Macquart, J-P and Rickett, B and Kedziora-Chudczer, L and Koay, JY, The MASIV survey: spectroscopic identifications of compact radio sources, Proceedings of the International Astronomical Union: Symposium 304 - Multiwavelength AGN Surveys and Studies, 7-11 October 2013, Yerevan, Armenia, pp. 110-111. ISSN 1743-9213 (2014) [Conference Extract]

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Interstellar scintillation (ISS) has been shown to be primarily responsible for the short term intraday variability (IDV) exhibited by extragalactic sources at centimeter wavelengths (e.g. Bignall et al. 2006 and references therein). For a source to scintillate its angular size must be comparable to that of the first Fresnel zone (Narayan 1992) which implies microarcsecond angular sizes for screen distances of tens to hundreds of parsecs. This has the potential to probe within a few light months of the central black hole (Bignall et al. 2006). The aim of the Microarcsecond Scintillation-Induced Variability (MASIV) survey was to provide a catalogue of at least a hundred AGNs that vary on timescales of hours to days to provide the basis of detailed studies of the IDV population drawn from a well-defined sample.

Item Details

Item Type:Conference Extract
Keywords:galaxies: active, distances and redshifts, photometry radio continuum: ISM
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Cosmology and extragalactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Lovell, J (Dr Jim Lovell)
ID Code:98503
Year Published:2014
Deposited By:Mathematics and Physics
Deposited On:2015-02-18
Last Modified:2015-04-30

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