Observations of 15 southern extragalactic sources with the Fleurs synthesis telescope

Christiansen, W. N.; Frater, R. H.; Watkinson, Anne; O’Sullivan, John D.; Lockhart, I. A.; Goss, W. M.

doi:10.1093/mnras/181.2.183

Cited by 45 publications

(35 citation statements)

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“…6. The radio source is a wide‐angle head–tail galaxy with bright inner lobes and diffuse tails [mapped by Schilizzi & McAdam (1975), Jones & McAdam (1992), Christiansen et al (1977) and Gregory et al (1994) at 408, 843, 1415 and 4850 MHz, respectively]. Ekers (1970) identified the source with an E3 galaxy at J2000 α= 16:15:1.7, δ=−60:55:13.7.…”

Section: Source Selection and Literature Reviewmentioning

confidence: 99%

“…In addition, there is a diffuse arm of emission extending south‐west from the western inner lobe (see e.g. low radio frequency images 1 by Christiansen et al 1977; Jones & McAdam 1992; Subrahmanyan, Saripalli & Hunstead 1996; Burgess & Hunstead 2006). Identified with an E3 galaxy by Whiteoak (1972) and Schilizzi (1975).…”

Section: Source Selection and Literature Reviewmentioning

confidence: 99%

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Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky

Burke-Spolaor

Ekers

Massardi

et al. 2009

Monthly Notices of the Royal Astronomical Society

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We present the wide‐field imaging and polarimetry at ν= 20 GHz of seven most extended, bright (Stotal≥ 0.50 Jy), high‐frequency selected radio sources in the southern sky with declinations δ < −30°. Accompanying the data are brief reviews of the literature for each source. The results presented here aid in the statistical completeness of the Australia Telescope 20‐GHz Survey: the Bright Source Sample. The data are of crucial interest for future cosmic microwave background missions as a collection of information about candidate calibrator sources. We were able to obtain data for seven of the nine sources identified by our selection criteria. We report that Pictor A is thus far the best extragalactic calibrator candidate for the Low Frequency Instrument of the Planck European Space Agency mission due to its high level of integrated polarized flux density (∼0.50 ± 0.06 Jy) on a scale of 10 arcmin. Six out of the seven sources have a clearly detected compact radio core in our images, with either a null detection or less than 2 per cent detection of polarized emission from the nuclei. Most sources with detected jets have magnetic field alignments running in a longitudinal configuration, however, PKS 1333−33 exhibits transverse fields and an orthogonal change in field geometry from nucleus to jets.

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Section: Source Selection and Literature Reviewmentioning

confidence: 99%

Section: Source Selection and Literature Reviewmentioning

confidence: 99%

Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky

Burke-Spolaor

Ekers

Massardi

et al. 2009

Monthly Notices of the Royal Astronomical Society

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“…Shaver & Goss 1970), indicating that it was extragalactic. The core and jets were later resolved with the Fleurs Synthesis Telescope by Christiansen et al (1977).…”

Section: Introductionmentioning

confidence: 99%

The radio galaxy Centaurus B

Jones

Lloyd

McAdam

2001

Monthly Notices of the Royal Astronomical Society

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Centaurus B (PKS B1343−601) is one of the brightest and closest radio galaxies, with flux density ∼250 Jy at 408 MHz and redshift 0.01215, but it has not been studied much because of its position (i) close to the Galactic plane (it is also known as G309.6+1.7 and Kes 19) and (ii) in the southern sky. It has recently been suggested as the centre of a highly obscured cluster behind the Galactic plane. We present radio observations made with the Australia Telescope Compact Array and Molonglo Observatory Synthesis Telescope to study the jets and lobes. The total intensity and polarization radio images of the FR I jets are used to determine the jet brightness and width variations, magnetic field structure and fractional polarization. The equipartition pressure calculated along the jets declines rapidly over the first 1 arcmin from the galaxy reaching a constant pressure of 10−13 h−4/7 Pa in the lobes blown in the intracluster medium.

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“…2 2 Schilizzi & McAdam (1975); Slee & Higgins (1977); Christiansen et al (1977); Smith & Robertson (1985); Duncan & Sproats (1992); Jones & McAdam (1992); Morganti, Killeen & Tadhunter (1993); Neff, Roberts & Hutchings (1995); Kuchar & Clark (1997); Kapahi et al (1998); Reid, Kronberg & Perley (1999); Barbon et al (1999); Healey et al (2007). …”

mentioning

confidence: 99%

An unbiased sample of bright southern compact steep spectrum and gigahertz peaked spectrum sources

Randall¹,

Hopkins²,

Norris³

et al. 2011

Monthly Notices of the Royal Astronomical Society

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Compact Steep Spectrum (CSS) and Gigahertz Peaked Spectrum (GPS) sources are classes of compact, powerful, extragalactic objects. These sources are thought to be the earliest stages in the evolution of radio galaxies, capturing the ignition (or, in some cases, re‐ignition) of the active galactic nucleus. As well as serving as probes of the early stages of large‐scale radio sources, these sources are good, stable, amplitude calibrators for radio telescopes. We present an unbiased flux density limited (>1.5 Jy at 2.7 GHz) catalogue of these objects in the Southern hemisphere, including tabulated data, radio spectra, and where available, optical images and measurements. The catalogue contains 26 sources, consisting of two new candidates and 15 known CSS sources, and nine known GPS sources. We present new Australia Telescope Compact Array (ATCA) data on 10 of these 26 sources, and data on a further 42 sources which were excluded from our final sample. This bright sample will serve as a reference sample for comparison with subsequent faint (mJy level) samples of CSS and GPS candidates currently being compiled.

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Observations of 15 southern extragalactic sources with the Fleurs synthesis telescope

Cited by 45 publications

References 0 publications

Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky

Wide-field imaging and polarimetry for the biggest and brightest in the 20-GHz southern sky

The radio galaxy Centaurus B

An unbiased sample of bright southern compact steep spectrum and gigahertz peaked spectrum sources

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