NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
An unusually strong Einstein ring in the radio source PKS1830 - 211High-resolution radio images of PKS1830 - 211 are obtained to study the possibility that the double structure is a gravitationally lensed object. The VLBI observations, taken from interferometric radiotelescope networks, reveal an elliptical ring that connects two bright spots of similar composition. Because the lens and the lensed object are closely aligned, and because of the structure of the two spots, the source is concluded to be a radio Einstein ring. The source is found to be close to the galactic plane, and the lens and the lensed object are extragalactic. The source is also found to be unusually bright, suggesting that it is aligned with a bright background source or amplified by some mechanism related to a source that is not so bright.
Document ID
19910060174
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Jauncey, D. L.
(CSIRO Australia Telescope National Facility, Epping, United States)
Reynolds, J. E.
(Mount Stromlo and Siding Spring Observatories Canberra, Australia)
Tzioumis, A. K.
(Nuffield Radio Astronomy Laboratories Jodrell Bank, United Kingdom)
Murphy, D. W.
(Commonwealth Scientific and Industrial Research Organization Epping, Australia)
Preston, R. A.
(Commonwealth Scientific and Industrial Research Organization Epping, Australia)
Jones, D. L.
(Commonwealth Scientific and Industrial Research Organization Epping, Australia)
Meier, D. L.
(Commonwealth Scientific and Industrial Research Organization Epping, Australia)
Hoard, D. W.
(Commonwealth Scientific and Industrial Research Organization Epping, Australia)
Lobdell, E. T.
(Commonwealth Scientific and Industrial Research Organization Epping, Australia)
Skjerve, L.
(JPL Pasadena, CA, United States)
Date Acquired
August 14, 2013
Publication Date
July 11, 1991
Publication Information
Publication: Nature
Volume: 352
ISSN: 0028-0836
Subject Category
Astrophysics
Accession Number
91A44797
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available