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The milliarcsecond ...
The milliarcsecond scale structure of low frequency variable sources
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- Romney, J. (author)
- Max-Planck-Institut für Radioastronomie, Bonn, Germany
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- Padrielli, L. (author)
- CNR, Istituto di Radioastronomia, Bologna, Italy
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- Bartel, N. (author)
- Max-Planck-Institut für Radioastronomie, Bonn, Germany & Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA
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- Weiler, K.W. (author)
- Max-Planck-Institut für Radioastronomie, Bonn, Germany & Division of Astronomical Sciences, National Science Foundation, Washington, DC, USA
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- Ficarra, A. (author)
- CNR, Istituto di Radioastronomia, Bologna, Italy
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- Mantovani, F. (author)
- CNR, Istituto di Radioastronomia, Bologna, Italy
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- Bååth, L.B. 1948- (author)
- Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden
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- Kogan, L. (author)
- Institute for Space Research, Academy of Sciences, Moscow, USSR
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- Matveenko, L. (author)
- Institute for Space Research, Academy of Sciences, Moscow, USSR
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- Moiseev, I.G. (author)
- Crimea Astrophysical Observatory, Academy of Sciences, Moscow, USSR
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- Nicholson, G. (author)
- National Institute for Telecommunications Research, Johannesburg, South Africa
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(creator_code:org_t)
- Les Ulis : EDP Sciences, 1984
- 1984
- English.
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In: Astronomy and Astrophysics. - Les Ulis : EDP Sciences. - 0004-6361 .- 1432-0746. ; 135:2, s. 289-299
- Related links:
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http://adsabs.harvar...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- VLBI observations were performed of 21 radio sources which exhibit low frequency variability. The integrated flux densities, variability indices at 0.4 GHz, optical magnitudes, redshifts, spectral indices at 0.4 GHz, and flux intensities with respect to a reference energy flux are provided. The VLBI data were synthesized from observatories located on different continents around the world. All structures were emitted from compact sources with sizes confined to milliarcsc scales. Nearly half displayed core-jet morphologies, while 28 percent had complex structures and 14 percent had either simple structures or were not resolvable. Further observations are proceeding at 400 mHz to confirm the presence of synchrotron electrons and magnetic fields ejected at relativistic speeds along the line of sight, which has the appearance of superluminal velocities.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- low frequency variables
- interferometry
- VLBI
- radio sources: general
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Romney, J.
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Padrielli, L.
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Bartel, N.
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Weiler, K.W.
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Ficarra, A.
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Mantovani, F.
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Bååth, L.B. 1948 ...
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Kogan, L.
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Matveenko, L.
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Moiseev, I.G.
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Nicholson, G.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Halmstad University