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CYBERSKA
A Cyberinfrastructure platform to meet the needs of data intensive radio astronomy on route to the SKA |
Results for "sources"
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Clustered Radio Interferometric Calibration
...io interferometric calibration of sources below the noise level. The ma...y the information of the stronger sources' measured signals as a plug-i...ntroids mainly near the strongest sources, assuming that the signals of...are assigned to all the cluster's sources. An illustrative example reve...3525 days ago
Galaxy Cluster Environments of Radio Sources
...ronments around double-lobed radio sources. Previous studies have shown that multi-component radio sources exhibiting some degree of ben...bent and straight multi-component sources. This led to the discovery an...ents around single-component radio sources and find that single-componen...3821 days ago
Optical observations of Ultra Steep Spectrum radio sources
...ent follow-up optical observations of Ultra Steep Spectrum sources that were found by matching 150 MHz GMRT sources with either the 74 MHz VLSS o...re conducted with the Liverpool Telescope; in all cases no sources are detected down to an R mag...3392 days ago
Spectral index properties of milliJansky radio sources
...e.g. 1.4 GHz. We present a new catalogue of 843 MHz radio sources in the ELAIS-S1 field that contains the sources, their ATLAS counterparts, an...te the spectral index distribution with redshift for those sources with reliable redshifts and e...3308 days ago
GALAXY CLUSTER ENVIRONMENTS OF RADIO SOURCES
...ronments around double-lobed radio sources. Previous studies have shown that multi-component radio sources exhibiting some degree of be...and straight multi-component radio sources. This led to the discovery a...ents around single-component radio sources and find that single-compone...3639 days ago
Radio sources with ultra-high polarisation
A sample of 129 unresolved radio sources with ultra-high linear polaris...ation is unusual in extragalactic sources. Higher resolution ATCA (Aust...ation but find that most of these sources are extended. SDSS (Sloan Dig...ithin a 1 Mpc radius of the radio sources show that these highly polari...3846 days ago
Intermittent activity of radio sources. Accretion instabilities and jet precession
...origin of the intermittent activity of radio sources. We test whether this instabi...es (<10^4 years) of Compact Steep Spectrum sources measured by hot spots propaga...t activity on the complex morphology of radio sources, such as the quasar 1045+352,...3754 days ago
More discoveries of compact radio cores in Seyfert galaxies with the EVN
...regions of local Seyfert galaxies (Giroletti & Panessa 2009, ApJL 706, 260), we have targeted a few additional sources from a complete sample. We have detected three more sources (NGC 3982, NGC 3227, and NGC...3693 days ago
VARIABLE RADIO SOURCES IN THE GALACTIC PLANE
...00 mJy at 6 cm. We find 39 variable sources in a total survey area of 23....lude there are ~1.6 deg–2 Galactic sources which vary by more than 50% o...e. We also show that the fraction of variable sources increases toward the Galactic...3884 days ago
Precise absolute astrometry from the VLBA imaging and polarimetry survey at 5 GHz
...esent in this paper accurate positions of 857 sources derived from the astrometric...imetry survey at 5 GHz (VIPS). Among observed sources, positions of 430 objects wer...liarcsecond level of accuracy. For 95% of the sources the uncertainty of their posi...3512 days ago
