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High resolution int...
High resolution interferometry of the QSO 1422+202
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- Bååth, Lars, 1948- (författare)
- Högskolan i Halmstad,Rydberglaboratoriet för tillämpad naturvetenskap (RLAS)
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- Mantovani, F. (författare)
- Istituto di Radioastronomia del C.N.R., Bologna, Italy
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- Rantakyrö, F.T. (författare)
- Istituto di Radioastronomia del C.N.R., Bologna, Italy
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(creator_code:org_t)
- 1997-11-15
- 1997
- Engelska.
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Ingår i: Astronomy and Astrophysics. Supplement Series. - Berlin : Springer. - 1286-4846 .- 0365-0138. ; 125:1, s. 453-458
- Relaterad länk:
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https://doi.org/10.1...
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visa fler...
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https://hh.diva-port... (primary) (Raw object)
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https://aas.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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visa färre...
Abstract
Ämnesord
Stäng
- We present VLA A-array observations at 8.4 and 15GHz and European VLBI Network (EVN) observations at 1.6GHz of the radio source 1422+202. It is suggested that 1422+202 is a Medium-size Object in the evolutionary sequence from Compact Steep-spectrum Sources to larger sized radio sources. The VLBI data were analysed with the phase referencing technique and we show that the EVN can work as a phase stable instrument for separations between the calibrator source and the target source up to ~ 10 degrees. With the VLA and VLBI observations we investigate some of the issues about the nucleus of 1422+202 and we discuss the possible cause for the low frequency variability detected while monitoring the source.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- galaxies:jets
- quasars:QSO 1422+202
- radio continuuk:galaxies
- Physics
- Fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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