CYBERSKA

 A Cyberinfrastructure platform to meet the needs of data intensive radio astronomy on route to the SKA

Results for "nvss"

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  • Radiogalaxies in the Sloan Digital Sky Survey: spectral index-environment correlations

    We analyze optical and radio properties of radiogalaxies detected in the Sloan Digital Sky Survey (SDSS). The sample of radio sources are selected from the catalogue of Kimball & Ivezi\'c (2008) with flux densities at 325, 1400 and 4850 MHz, using WENSS, NVSS and GB6 radio surveys and from fl...

    Tags: sdss, wenss, nvss, uss, alpha, spectral index, gb6

    3071 days ago

  • Radio sources with ultra-high polarisation

    A sample of 129 unresolved radio sources with ultra-high linear polarisation (>30 per cent) has been selected from the NVSS (NRAO VLA Sky Survey). Such high average linear polarisation is unusual in extragalactic sources. Higher resolution ATCA (Australia Telescope Compact Array) and VLA (Very...

    Tags: mnras, arxiv, polarization, agn, nvss, sdss, vla, atca, galaxy, unresolved

    3071 days ago

  • Automated Source Finding - SAD

    Having looked at the C-field 13 Jul 2010 Release with Duchamp and encountering a few issues I thought it would be prudent to run a similar analysis with the AIPS implemenation of SAD. In the Stokes I image, some 489 sources were found down to a detection threshold of 1K (as with Duchamp a numbe...

    Tags: galfacts, cfield, igalfa, sources, source finding, nvss, gb6, sad, aips

    3039 days ago

  • Typical NVSS Field

    A typical NVSS image. The NRAO VLA Sky Survey (NVSS) is a 1.4 GHz continuum survey covering the entire sky north of -40 deg declination (Condon, J. J., Cotton, W. D., Greisen, E. W., Yin, Q. F., Perley, R. A., Taylor, G. B., & Broderick, J. J. 1998, AJ, 115, 1693).

    Tags: nvss, fits

    2218 days ago

  • A Deep 150 MHz GMRT Survey in Eridanus

    We present results of a 150 MHz survey of a field centered on Epsilon Eridani, undertaken with the Giant Metrewave Radio Telescope (GMRT). The survey covers an area with a diameter of 2 deg, has a spatial resolution of 30" and a noise level of 3.1 mJy at the pointing centre. These observations pr...

    Tags: gmrt, 150, nvss, vlss, 7c, radio, eps eri

    2953 days ago