Twin-beam models for double radio sources. I - Steady-state configurations

Abstract

view Abstract Citations (34) References (34) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Twin-beam models for double radio sources. I. Steady-state configurations. Wiita, P. J. Abstract Continuous ejection models for extragalactic symmetric double radio sources are discussed, with emphasis on the twin-exhaust proposal of Blandford and Rees, since it accounts for the data reasonably well. Their steady-state model is refined through the introduction of parameters related to constraints imposed by the observations (optical, radio, and X-ray). We construct models for Cygnus A that have considerably more compact inner regions than those of Blandford and Rees, and we argue that our version may provide a more natural explanation of the alignment between inner and outer radio emission regions. Our models require a hotter, denser, confining gas housed within a galactic nucleus; the nucleus is assumed to supply the energy and plasma for the entire double source. Suggestions for further relevant observations are made. Publication: The Astrophysical Journal Pub Date: April 1978 DOI: 10.1086/156003 Bibcode: 1978ApJ...221...41W Keywords: Astronomical Models; Galactic Radio Waves; Galactic Structure; Radio Sources (Astronomy); Galactic Nuclei; Relativistic Plasmas; Steady State; Very Long Base Interferometry; Astrophysics; Pairs of Radio Sources:Models full text sources ADS | Related Materials (5) Part 2: 1978ApJ...221..436W Part 3: 1981ApJ...243..710W Part 4: 1983ApJ...270..427J Part 5: 1986ApJ...300..605W Part 6: 1987ApJ...313..623S