Intraday Radio Variability and Micro-Arcsecond Resolution
Links to Fileshttp://aspbooks.org/custom/publications/paper/402-0256.html
MetadataShow full item record
Type of Work6 pages
conference papers and proceedings
Citation of Original PublicationBignall, Hayley E.; Jauncey, David L.; Kedziora-Chudczer, Lucyna; Lovell, James E. J.; Macquart, Jean-Pierre; Ojha, Roopesh; Rickett, Barnaby J.; Intraday Radio Variability and Micro-Arcsecond Resolution; Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technology; ASP Conference Series, Vol. 402, ©2009; http://aspbooks.org/custom/publications/paper/402-0256.html
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.
Public Domain Mark 1.0
This 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.
Intraday variability (IDV) of AGN at centimeter wavelengths has been shown to be predominantly due to interstellar scintillation (ISS). Recent VLBI observations have shown that IDV sources are more compact than non-IDVs on milliarcsecond scales, and a significant fraction are completely unresolved with ground-based VLBI. Additionally, very rapid IDV due to ISS has been observed in some extragalactic water masers at 22 GHz, implying masers ∼ 10 micro-arcseconds in angular size. Such bright, compact sources will be excellent targets for observation with VSOP-2 in order to study the sub-pc scale regions of AGN.
The following license files are associated with this item:
- Creative Commons