Sökning: id:"swepub:oai:DiVA.org:hh-22784" >
The Compact Radio S...
The Compact Radio Source 2021+614 : Simultaneous 2.3 and 8.3 GHz Mark III VLBI Observations
-
- Bartel, N. (författare)
- Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA & Harvard-Smithsonian Astrophysical Observatory, Cambridge, MA, USA
-
- Shapiro, I.I. (författare)
- Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA & Harvard-Smithsonian Astrophysical Observatory, Cambridge, MA, USA
-
- Corey, B.E. (författare)
- NEROC, Haystack Observatory, Westford, MA, USA
-
visa fler...
-
- Marcaide, J.M. (författare)
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA & Max-Planck-Institut für Radioastronomie, Bonn, Germany
-
- Rogers, A.E.E. (författare)
- NEROC, Haystack Observatory, Westford, MA, USA
-
- Whitney, A.R. (författare)
- NEROC, Haystack Observatory, Westford, MA, USA
-
- Cappallo, R.J. (författare)
- NEROC, Haystack Observatory, Westford, MA, USA
-
- Kühr, H. (författare)
- Steward Observatory, Tucson, AZ, USA
-
- Graham, D. (författare)
- Max-Planck-Institut für Radioastronomie, Bonn, Germany
-
- Bååth, L.B. 1948- (författare)
- Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden
-
visa färre...
-
(creator_code:org_t)
- Philadelphia, PA : Institute of Physics Publishing (IOPP), 1984
- 1984
- Engelska.
-
Ingår i: Astrophysical Journal. - Philadelphia, PA : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 279:1, s. 116-121
- Relaterad länk:
-
http://articles.adsa...
-
visa fler...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Second-epoch VLBI observations of the flat-spectrum radio source 2021+614 made simultaneously at 2.3 and 8.3 GHz with the Mark III system are reported. The maps derived from these observations reveal a complex, frequency-dependent radio structure on the milliarcsecond scale. The object has four nearly collinear components oriented at a position angle of about 35 degrees and embedded in an extended region. Two of these are optically thin, one has a flat spectrum, and the other appears to be synchrotron self-absorbed in the frequency range 2.3-8.3 GHz. No significant structural variation is found at either frequency between epochs separated by about three years. The formal estimate of the transverse velocity between two components, one with a flat and the other with an inverted spectrum, is v/c = 0.7 + or - 2.3. Remarkable similarities between 2021+614 and the unusual source 0316+413 are discussed.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Bartel, N.
-
Shapiro, I.I.
-
Corey, B.E.
-
Marcaide, J.M.
-
Rogers, A.E.E.
-
Whitney, A.R.
-
visa fler...
-
Cappallo, R.J.
-
Kühr, H.
-
Graham, D.
-
Bååth, L.B. 1948 ...
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Astronomi astrof ...
- Artiklar i publikationen
-
Astrophysical Jo ...
- Av lärosätet
-
Högskolan i Halmstad