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September 28, 2014, at 03:03 PM by 121.45.161.42 -
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BETA Band 1 (712- 1015 MHz) observation of the 1 Jy radio galaxy PKS2252-089. The (known) absorption line associated with HI gas intrinsic to PKS2252-089 can clearly be seen at 884 MHz. The inset shows a close-up of the detected absorption line, with the BETA spectrum in red and an earlier GBT observation in blue. [Figure courtesy of CSIRO]\\\
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BETA Band 1 (712- 1015 MHz) observation of the 1 Jy radio galaxy PKS2252-089. The (known) absorption line associated with HI gas intrinsic to PKS2252-089 can clearly be seen at 884 MHz. The inset shows a close-up of the detected absorption line, with the BETA spectrum in red and an earlier GBT observation in blue. [Figure courtesy of CSIRO]\\\

September 28, 2014, at 03:01 PM by 121.45.161.42 -
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BETA Band 1 (712- 1015 MHz) observation of the 1 Jy radio galaxy PKS2252-089. The (known) absorption line associated with HI gas intrinsic to PKS2252-089 can clearly be seen at 884 MHz. The inset shows a close-up of the detected absorption line, with the BETA spectrum in red and an earlier GBT observation in blue. [Figure courtesy of CSIRO]]]
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BETA Band 1 (712- 1015 MHz) observation of the 1 Jy radio galaxy PKS2252-089. The (known) absorption line associated with HI gas intrinsic to PKS2252-089 can clearly be seen at 884 MHz. The inset shows a close-up of the detected absorption line, with the BETA spectrum in red and an earlier GBT observation in blue. [Figure courtesy of CSIRO]\\\
September 28, 2014, at 02:59 PM by 121.45.161.42 -
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[Figure courtesy of CSIRO]
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BETA Band 1 (712- 1015 MHz) observation of the 1 Jy radio galaxy PKS2252-089. The (known) absorption line associated with HI gas intrinsic to PKS2252-089 can clearly be seen at 884 MHz. The inset shows a close-up of the detected absorption line, with the BETA spectrum in red and an earlier GBT observation in blue. [Figure courtesy of CSIRO]]]
September 28, 2014, at 02:54 PM by 121.45.161.42 -
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Radio colour-colour plot (from Murphy et al. 2010) for a set of 3763 AT20G sources with near-simultaneous observations at 20, 8 and 5 GHz (crosses). Open circles show a newly-identifed class of Ultra-Inverted Spectrum (UIS) sources with a spectral index of α(5, 20) > +0.7.

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Radio colour-colour plot (from Murphy et al. 2010) for a set of 3763 AT20G sources with near-simultaneous observations at 20, 8 and 5 GHz (crosses). Open circles show a newly-identifed class of Ultra-Inverted Spectrum (UIS) sources with a spectral index of α(5, 20) > +0.7.\\\

September 28, 2014, at 02:53 PM by 121.45.161.42 -
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Radio colour-colour plot (from Murphy et al. 2010) for a set of 3763 AT20G sources with near-simultaneous observations at 20, 8 and 5 GHz (crosses). Open circles show a newly-identifed class of Ultra-Inverted Spectrum (UIS) sources with a spectral index of α(5, 20) > +0.7.\\\
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Radio colour-colour plot (from Murphy et al. 2010) for a set of 3763 AT20G sources with near-simultaneous observations at 20, 8 and 5 GHz (crosses). Open circles show a newly-identifed class of Ultra-Inverted Spectrum (UIS) sources with a spectral index of α(5, 20) > +0.7.\\\
September 28, 2014, at 02:52 PM by 121.45.161.42 -
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September 28, 2014, at 02:51 PM by 121.45.161.42 -
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Attach:news_aces.3jpg Δ | [Figure courtesy of CSIRO]

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[Figure courtesy of CSIRO]
September 28, 2014, at 02:49 PM by 121.45.161.42 -
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Attach:news_aces_11072014_full.jpg Δ | 37). [Figure courtesy of CSIRO]

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Attach:news_aces.3jpg Δ | [Figure courtesy of CSIRO]

September 28, 2014, at 02:43 PM by 121.45.161.42 -
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We are currently carrying out a series of demonstration science observations with the BETA test array which links six ASKAP antenas with Mk1 Phased Array Feeds (see here for more details).

Attach:news_aces_11072014_full.jpg Δ | 37). [Figure courtesy of CSIRO]

September 28, 2014, at 02:37 PM by 121.45.161.42 -
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We recently completed the first high-frequency radio survey of the southern sky, the Australia Telescope 20 GHz (AT20G) survey, using a wide-band analogue correlator on the Australia Telescope Compact Array (ATCA). More details of the survey, as well as the public data catalogue released in late 2009, are available here.\\\

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We recently completed the first high-frequency radio survey of the southern sky, the Australia Telescope 20 GHz (AT20G) survey, using a wide-band analogue correlator on the Australia Telescope Compact Array (ATCA). More details of the survey, as well as the public data catalogue released in 2010, are available here.\\\

September 28, 2014, at 02:36 PM by 121.45.161.42 -
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21cm HI absorption studies with ASKAP

I lead the ASKAP-FLASH survey (see http://www.physics.usyd.edu.au/sifa/Main/FLASH/), which will carry out the first blind survey for HI in individual galaxies at 0.5 < z < 1.0 by detecting the HI line in absorption against background continuum sources.

HI in nearby E/S0 galaxies

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I am also PI for the ASKAP-FLASH survey (see http://www.physics.usyd.edu.au/sifa/Main/FLASH/), which will carry out the first blind survey for HI in individual galaxies at 0.5 < z < 1.0 by detecting the HI line in absorption against background continuum sources.

HI in nearby E/S0 galaxies

January 03, 2010, at 11:36 AM by ems -
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'Radio galaxies and their evolution

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Radio galaxies and their evolution

December 16, 2009, at 07:13 AM by ems -
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Welcome to my home page, I'm an ARC Australian Professorial Fellow (and Professor of Astrophysics) in the School of Physics at the University of Sydney. I work within the Sydney Institute for Astronomy (SIfA).

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Welcome to my home page, I'm an ARC Australian Professorial Fellow (and Professor of Astrophysics) in the School of Physics at the University of Sydney. I work within the Sydney Institute for Astronomy (SIfA).

December 15, 2009, at 11:24 PM by ems -
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December 15, 2009, at 10:15 PM by ems -
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December 15, 2009, at 10:12 PM by ems -
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December 15, 2009, at 10:12 PM by ems -
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Welcome to my home page, I'm an ARC Australian Professorial Fellow (and Professor of Astrophysics) in the School of Physics at the University of Sydney. I work within the Sydney Institute for Astronomy (SIfA).