The radio properties of the cD galaxy of Abell 2390

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Augusto, P (Autor) Outra; Edge, AC (Autor) Outra; Chandler, CJ (Autor) Outra

Revista

Título: Monthly Notices of the Royal Astronomical Society

Vol. 367

Páginas: 366-374

ISSN: 0035-8711

Editora: Oxford University Press

Indexação

ISI Web of Knowledge - 10 Citações

Scopus - 10 Citações

Outras Informações

ID Authenticus: P-004-MQ4

DOI: 10.1111/j.1365-2966.2005.09965.x

Abstract (EN): We present multifrequency, multi-epoch radio imaging of the complex radio source B2151+174 in the core of the cluster, Abell 2390 (z similar or equal to 0.23). From new and literature data, we conclude that the Faranoff-Riley type II (FRII)-powerful radio source is the combination of a compact, core-dominated 'medium-sized symmetric object' (MSO) with a more extended, steeper spectrum mini-halo. B2151+174 is unusual in a number of important aspects. (i) It is one of the most compact and flat spectrum sources in a cluster core known; (ii) it shows a complex, compact twin-jet structure in a north-south orientation; (iii) the orientation of the jets is 45 degrees misaligned with apparent structure (ionization cones and dust disc) of the host galaxy on larger scales. Since the twin-jet of the MSO has its northern half with an apparent 'twist', it might be that precession of the central supermassive black hole explains this misalignment. B2151+174 may be an example of the early stage (10(3)-10(4) yr duration) of a 'bubble' being blown into the intracluster medium where the plasma has yet to expand.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9