HIGH-PRECISION DIFFERENTIAL ASTROMETRY IN LARGE ANGULAR SEPARATION PAIRS OF RADIOSOURCES

DOI: 
Publication date: 
01/01/1994
Main author: 
MARCAIDE, JM
IAA authors: 
MARCAIDE, JM; GUIRADO, JC
Authors: 
MARCAIDE, JM; GUIRADO, JC
Journal: 
VERY HIGH ANGULAR RESOLUTION IMAGING
Publication type: 
Article
Volume: 
Pages: 
445-447
Number: 
Abstract: 
We show preliminary results of three of the four radiosource pairs with angular separations ranging from 0.01 degrees to 6 degrees where we have determined such a separation with a typical fractional precision of 10(-8) using phase delays corrected for structural and ionospheric contributions. In the radiosource 4C39.25 we measure a motion with respect to an external radiosource which is compatible with previously reported internal superluminal motion.
Database: 
WOK
Keywords: