The radio nucleus of NGC 4151 at 5 and 8 GHz

Autor:	T. W. B. Muxlow, M. J. Kukula, S. W. Unger, A. Pedlar, D. P. T. Longley, Stefi A. Baum, David Axon, Christopher P. O'Dea
Rok vydání:	1993
Předmět:	Physics Radio map Active galactic nucleus Astronomy Astronomy and Astrophysics Astrophysics Spectral line Collimated light medicine.anatomical_structure Space and Planetary Science medicine Basso continuo Ejecta Nucleus
Zdroj:	Monthly Notices of the Royal Astronomical Society. 263:471-480
ISSN:	1365-2966 0035-8711
DOI:	10.1093/mnras/263.2.471
Popis:	We present 5- and 8-GHz observations of the Seyfert nucleus of NGC 4151. The observations have angular resolutions ranging from 400 to 50 mas and sensitivities as high as 7 μJy beam −1 . We confirm the picture of a two-sided radio jet along PA 77°, and also detect a weak component 6 arcsec (400 pc) to the east which shows that collimated ejecta associated with the jet extend at least twice as far as revealed by earlier measurements. The central knots in the jet have significantly higher pressure than components in the outer parts. Most of the components in the source have steep spectra, although that of the eastern component in the central double is relatively flat (α = −0.3), consistent with it being associated with the optical continuum nucleus
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f67585865222cefd309aaeeb3461d9a8 https://doi.org/10.1093/mnras/263.2.471 Zobrazit plný text záznamu