Extended optical line emitting gas in powerful radio galaxies - What is the radio emission-line connection?

1989 ◽  
Vol 336 ◽  
pp. 702 ◽  
Author(s):  
Stefi A. Baum ◽  
Timothy Heckman
Keyword(s):  
Radio Emission ◽  
Emission Line ◽  
Radio Galaxies ◽  
Powerful Radio ◽  
Optical Line

scholarly journals The Emission Line Properties of the 3CR Radio Galaxies at Redshift One: Shocks, Evolution, and the Alignment Effect

1999 ◽  
Vol 194 ◽  
pp. 241-245
Author(s):  
Philip Best ◽  
Huub Röttgering ◽  
Malcolm Longair
Keyword(s):  
Emission Line ◽  
Radio Source ◽  
Velocity Structure ◽  
Radio Galaxies ◽  
Linear Size ◽  
Continuum Emission ◽  
Radio Sources ◽  
Powerful Radio ◽  
Alignment Effect ◽  
Optical Continuum

The results of a deep spectroscopic campaign on powerful radio galaxies with redshifts z ˜ 1, to investigate in detail their emission line gas properties, are presented. Both the 2-dimensional velocity structure of the [OII] 3727 emission line and the ionisation state of the gas are found to be strongly dependent upon the linear size (age) of the radio source in a manner indicative of the emission line properties of small (young) radio sources being dominated by the passage of the radio source shocks. The consequences of this evolution throughout the few x107 year lifetime of the radio source are discussed, particularly with relation to the alignment of the UV–optical continuum emission of these objects along their radio axis, the nature of which shows similar evolution.

Spectroscopy of emission-line nebulae in powerful radio galaxies - Interpretation

1992 ◽  
Vol 389 ◽  
pp. 208 ◽  
Author(s):  
S. A. Baum ◽  
T. M. Heckman ◽  
W. van Breugel
Keyword(s):  
Emission Line ◽  
Radio Galaxies ◽  
Powerful Radio

scholarly journals Overpressured emission-line clouds in the haloes of powerful radio galaxies

2002 ◽  
Vol 331 (2) ◽  
pp. L13-L18 ◽  
Author(s):  
T. G. Robinson ◽  
C. N. Tadhunter ◽  
J. E. Dyson
Keyword(s):  
Emission Line ◽  
Radio Galaxies ◽  
Powerful Radio

Extended optical line emission associated with radio galaxies

1986 ◽  
Vol 64 (4) ◽  
pp. 392-397 ◽  
Author(s):  
Wil van Breugel
Keyword(s):  
Emission Line ◽  
Ambient Medium ◽  
Line Emission ◽  
Optical Emission ◽  
Radio Galaxies ◽  
General Properties ◽  
Extragalactic Jets ◽  
Optical Line

Observations of radio galaxies that have extended optical emission-line regions provide a new way of studying the interaction of extragalactic jets with their ambient medium. Their general properties are briefly reviewed and are illustrated using recent results on 4C 29.30 and Minkowski's Object.

scholarly journals Extended Optical Line Emission Associated with Radio Galaxies

1982 ◽  
Vol 97 ◽  
pp. 61-64 ◽  
Author(s):  
Wil van Breugel ◽  
Tim Heckman
Keyword(s):  
Radio Emission ◽  
Line Emission ◽  
Video Camera ◽  
Radio Galaxies ◽  
High Gain ◽  
General Information ◽  
Thermal Radio ◽  
Thermal Radio Emission ◽  
Optical Line

Using the Video Camera (e.g. Butcher et al. 1980) and the High Gain Video Spectrometer (e.g. Heckman et al. 1981) we are carrying out a program at Kitt Peak to search for optical line emission associated with the jets and lobes of radio galaxies. Several sources have been found in which extended optical line emission is clearly related to the non-thermal radio emission. Some general information on these and a few other sources is summarized in Table 1.

scholarly journals Quasar Emission - Line Strengths

1989 ◽  
Vol 134 ◽  
pp. 124-125
Author(s):  
Richard Green ◽  
Patrick Osmer ◽  
Alain Porter
Keyword(s):  
Radio Emission ◽  
Emission Line ◽  
Line Strength ◽  
Ultraviolet Excess ◽  
Powerful Radio ◽  
Observational Selection ◽  
Quasar Spectra ◽  
International Ultraviolet Explorer ◽  
Powerful Radio Emission ◽  
Line Strengths

The strongest lines have been measured in 73 quasar spectra from the archives of the International Ultraviolet Explorer Satellite. The optically bright quasars observed with IUE were typically discovered by powerful radio emission or ultraviolet excess. They therefore should not be biased directly by observational selection with respect to ultraviolet line strength.

scholarly journals The role of AGN jets and intracluster magnetic fields in the formation and acceleration of cosmic rays

2010 ◽  
Vol 6 (S275) ◽  
Author(s):  
Nectaria A. B. Gizani
Keyword(s):  
Cosmic Rays ◽  
Magnetic Fields ◽  
Radio Emission ◽  
Radio Galaxies ◽  
Powerful Radio ◽  
X Ray ◽  
Cooling Flow ◽  
The Core ◽  
Radio Jets

AbstractUsing radio and X-ray data of two powerful radio galaxies, we attempt to find out the role that radio jets (in terms of composition and power), as well as intracluster magnetic fields, play in the formation, propagation, and acceleration of cosmic rays. For this study we have selected the powerful radio galaxies Hercules A and 3C 310 because of the presence of ring-like features in their kpc-scale radio emission instead of the usual hotspots. These two FR1.5 lie at the center of galaxy cooling flow clusters in a dense environment. We observed the unique jets of Hercules both in kpc-scales (multifrequency VLA data) and pc-scales (EVN observations at 18 cm). We have also observed the core and inner jets of 3C310 at 18 cm using global VLBI. We report on the work in progress.

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