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CYBERSKA
A Cyberinfrastructure platform to meet the needs of data intensive radio astronomy on route to the SKA |
Latest comments
Russ Taylor on SkyQuery: An Implementation of a Parallel Probabilistic Join Engine for Cross-Identification of Multiple Astronomical Databases (2614 days ago): Very interesting..- Samuel George on Faraday synthesis: The synergy of aperture and rotation measure synthesis (2802 days ago): Ah yes, pardon my stupid comment! :-) I had meant to say POSSUM when I wrote...
- Kevin Douglas on Faraday synthesis: The synergy of aperture and rotation measure synthesis (2802 days ago): Sam, pardon my ignorance (still learning this polarisation stuff) but how would...
- Samuel George on Faraday synthesis: The synergy of aperture and rotation measure synthesis (2802 days ago): This looks very promising. I tried to get hold of their implementation...
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arxiv, sdss, mnras, agn, ska, instrumentation and methods for astrophysics, a&a, astronomy, galaxies, hi, polarization, radio, extragalactic astrophysics, cosmology, rfi, gpu, methods, iskaf2010 science meeting, data, xray, galfa, frii, ism, fits, open source, nvss, lwa, archive, workshop, calibration, imaging, effelsberg, ebhis, ir, vla, galaxy, clean, apj, galaxy astrophysics, maser, 21cm, instrumentation, simulations, databases, data analysis, new astronomy, high energy astrophysical phenomena, parallel, the dynamic ism: a celebration of the canadian galactic plane survey, fri
All site bookmarks
Detailed SZ study of 19 LoCuSS galaxy clusters: masses and temperatures out to the virial radius
By Samuel George 2638 days agoarxiv.org - We present 16-GHz AMI SZ observations of 19 clusters with L_X >7x10^37 W (h50=1) selected from the LoCuS survey (0.142<z<0.295) and of A1758b, in the FoV of A1758a. We detect 17 clusters with 5-23sigma peak surface brightnesses. Cluster...Reduced Ambiguity Calibration for LOFAR
By Samuel George 2639 days agoarxiv.org - Interferometric calibration always yields non unique solutions. It is therefore essential to remove these ambiguities before the solutions could be used in any further modeling of the sky, the instrument or propagation effects such as the...Continuum Halos in Nearby Galaxies -- an EVLA Survey (CHANG-ES) -- I: Introduction to the Survey
By Samuel George 2642 days agoarxiv.org - We introduce a new survey to map the radio continuum halos of a sample of 35 edge-on spiral galaxies at 1.5 GHz and 6 GHz in all polarization products. The survey is exploiting the new wide bandwidth capabilities of the Karl G. Jansky Very Large...BLOBCAT: Software to Catalogue Flood-Filled Blobs in Radio Images of Total Intensity and Linear...
By Samuel George 2644 days agoarxiv.org - We present BLOBCAT, new source extraction software that utilises the flood fill algorithm to detect and catalogue blobs, or islands of pixels representing sources, in two-dimensional astronomical images. The software is designed to process...Mid and Far Infrared Properties of a Complete Sample of Local AGNs
By Samuel George 2646 days agoarxiv.org - We investigate the mid- (MIR) to far-infrared (FIR) properties of a nearly complete sample of local Active Galactic Nuclei (AGNs) detected in the Swift/BAT all sky hard X-ray (14-195 keV) survey, based on the cross correlation with the AKARI...First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of...
By Samuel George 2647 days agoarxiv.org - Abell 2256 is one of the best known examples of a galaxy cluster hosting large-scale diffuse radio emission that is unrelated to individual galaxies. It contains both a giant radio halo and a relic, as well as a number of head-tail sources and...VLSS Redux: Software Improvements applied to the Very Large Array Low-frequency Sky Survey
By Samuel George 2648 days agoarxiv.org - We present details of improvements to data processing and analysis which were recently used for a re-reduction of the Very Large Array (VLA) Low-frequency Sky Survey (VLSS) data. Algorithms described are implemented in the data-reduction package...The Green Bank Telescope HII Region Discovery Survey: III. Kinematic Distances
By Samuel George 2649 days agoarxiv.org - Using the HI Emission/Absorption method, we resolve the kinematic distance ambiguity and derive distances for 149 of 182 (82%) HII regions discovered by the Green Bank Telescope HII Region Discovery Survey (GBT HRDS). The HRDS is an X-band (9GHz,...Relativistic jet models for two low-luminosity radio galaxies: evidence for backflow?
By Samuel George 2652 days agoarxiv.org - We show that asymmetries in total intensity and linear polarization between the radio jets and counter-jets in two lobed Fanaroff-Riley Class I (FR I) radio galaxies, B2 0206+35 (UGC 1651) and B2 0755+37 (NGC 2484), can be accounted for if these...Imaging neutral hydrogen on large-scales during the Epoch of Reionization with LOFAR
By Samuel George 2654 days agoarxiv.org - The first generation of redshifted 21 cm detection experiments, carried out with arrays like LOFAR, MWA and GMRT, will have a very low signal-to-noise ratio per resolution element (\sim 0.2). In addition, whereas the variance of the cosmological...
