6533b7d7fe1ef96bd12678f8

RESEARCH PRODUCT

High Precision Differential Astrometry in Large Angular Separation Pairs of Radiosources

J. M. MarcaideJ. C. Guirado

subject

PhysicsSuperluminal motionTotal electron contentAngular distancePhase (waves)RangingAstrophysicsAstrometryMeasure (mathematics)Group delay and phase delay

description

We show preliminary results of three of the four radiosource pairs with angular separations ranging from 0.01° to 6° where we have determined such a separation with a typical fractional precision of 10-8using 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.

yearjournalcountryeditionlanguage
1994-01-01
https://doi.org/10.1007/978-94-011-0880-5_90