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We present the results of multifrequency VLBA observations of J1944+5448 and J0111+3906. These sources are compact symmetric objects, completely embedded in the narrow line region of the host galaxy. Multi-epoch observations allowed us to derive the hot-spot separation speed that was used to estimate the kinematic age of both sources. Their asymmetric shape is likely due to an inhomogeneous ambient medium with which these sources interact. Finally we present the results on the spectral analysis of J0111+3906 whose spectrum is fitted with either a synchrotron self-absorption mechanism or a free free absorption model.

Multifrequency VLBA observations of two compact symmetric objects / Rastello, Sara; Dallacasa, D.; Orienti, M.. - In: ASTRONOMISCHE NACHRICHTEN. - ISSN 0004-6337. - STAMPA. - 337:(2016), pp. 42-46. (Intervento presentato al convegno 5TH WORKSHOP ON COMPACT STEEP SPECTRUM AND GHZ-PEAKED SPECTRUM RADIO SOURCES tenutosi a Rimini nel MAY 27 – 29, 2015) [10.1002/asna.201512262].

Multifrequency VLBA observations of two compact symmetric objects

RASTELLO, SARA;
2016

Abstract

We present the results of multifrequency VLBA observations of J1944+5448 and J0111+3906. These sources are compact symmetric objects, completely embedded in the narrow line region of the host galaxy. Multi-epoch observations allowed us to derive the hot-spot separation speed that was used to estimate the kinematic age of both sources. Their asymmetric shape is likely due to an inhomogeneous ambient medium with which these sources interact. Finally we present the results on the spectral analysis of J0111+3906 whose spectrum is fitted with either a synchrotron self-absorption mechanism or a free free absorption model.
2016
5TH WORKSHOP ON COMPACT STEEP SPECTRUM AND GHZ-PEAKED SPECTRUM RADIO SOURCES
Galaxies: active; Galaxies: evolution; Galaxies: individual (J1944+5448, J0111+3906); Radiation mechanism: non-thermal; Radio continuum: galaxies; Astronomy and Astrophysics; Space and Planetary Science
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
Multifrequency VLBA observations of two compact symmetric objects / Rastello, Sara; Dallacasa, D.; Orienti, M.. - In: ASTRONOMISCHE NACHRICHTEN. - ISSN 0004-6337. - STAMPA. - 337:(2016), pp. 42-46. (Intervento presentato al convegno 5TH WORKSHOP ON COMPACT STEEP SPECTRUM AND GHZ-PEAKED SPECTRUM RADIO SOURCES tenutosi a Rimini nel MAY 27 – 29, 2015) [10.1002/asna.201512262].
04c Atto di convegno in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/973823
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