Superluminal motion in the quasar 3C 345

Journal Article · Tue Dec 15 04:00:00 EST 1981 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183693· OSTI ID:5729545

Schraml, J; Pauliny-Toth, I I.K.; Witzel, A; Kellermann, K I; Johnston, K J; Spencer, J H

The complex structure of the quasar 3C 345 makes it very difficult to describe unambiguously the relative motions of the components. The simplest interpretation is that the overall structure appears to have increased in size during the period 1974-1980 due to the separation of a low surface brightness region from a bright double core with an apparent angular velocity of approx.0.3 mas yr/sup -1/. During this same period the separation of the core components has remained close to 1.3 mas. However, the possibility that the apparent increase in overall source dimensions is due to a brightening of the outer regions of the source rather than to real component motion cannot be ruled out.

• Research Organization: Max-Planck Institut fuer Radioastronomie, Bonn
• OSTI ID: 5729545
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 251:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BRIGHTNESS
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
INTERFEROMETRY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
QUASARS
RADIATIONS
RADIOWAVE RADIATION
VARIATIONS