Symmetry Parameters of CSS Sources: Evidence of Fuelling?

Arecibo; (5) Jodrell Bank Observatory; Atlanta); Bologna; (4) Arecibo Observatory; C.J. Salter (4); D.J. Saikia (1); F. Mantovani (3); Koln; (3) Istituto di Radioastronomia; Macclesfield; (6) Georgia State University; P.J. Wiita (6) ((1) NCRA-TIFR; P. Thomasson (5)

arxiv: astro-ph/0305073 · v1 · submitted 2003-05-06 · 🌌 astro-ph

Symmetry Parameters of CSS Sources: Evidence of Fuelling?

D.J. Saikia (1) , S. Jeyakumar (2) , F. Mantovani (3) , C.J. Salter (4) , R.E. Spencer (5) , P. Thomasson (5) , P.J. Wiita (6) ((1) NCRA-TIFR , Pune; (2) Physikalisches Institut

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Koln; (3) Istituto di Radioastronomia Bologna; (4) Arecibo Observatory Arecibo; (5) Jodrell Bank Observatory Macclesfield; (6) Georgia State University Atlanta)

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keywords evidencesourcesfuelledspectrumactivityagesbelievedcharacteristics

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The compact steep spectrum (CSS) and gigahertz peaked spectrum (GPS) sources are widely believed to be young radiosources, with ages <10^6 yr. If the activity in the nucleus is fuelled by the supply of gas, one might find evidence of this gas by studying the structural and polarisation characteristics of CSS sources and their evolution through this gas. In this paper we discuss some of the possible `smoking-gun' evidence of this gas which may have triggered and fuelled the radio source.

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Symmetry Parameters of CSS Sources: Evidence of Fuelling?

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