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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 (3926 days ago): Very interesting..- Samuel George on Faraday synthesis: The synergy of aperture and rotation measure synthesis (4114 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 (4114 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 (4115 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
Method for Finding Variable Radio Sources in Drift-Scan Interferometric Data from the Nasu...
By Samuel George 3925 days agowww.jstor.org - We have developed an analysis method for finding flux variabilities of the fringes in drift-scan interferometric data at 1.4 GHz obtained from the Nasu observatory. This method uses the expectation data of the Nasu observation generated from a...Radio and Optical Observations of DG Tau B
By Samuel George 3926 days agoarxiv.org - DG Tau B is a Class I young stellar source that drives the asymmetric HH 159 bipolar jet. At optical wavelengths it is obscured by circumstellar optically-thick material. Using VLA and JVLA observations, we determine for the first time the proper...SkyQuery: An Implementation of a Parallel Probabilistic Join Engine for Cross-Identification of...
By Samuel George 3927 days ago Comments (1)arxiv.org - Multi-wavelength astronomical studies require cross-identification of detections of the same celestial objects in multiple catalogs based on spherical coordinates and other properties. Because of the large data volumes and spherical geometry, the...ALMA observations of the outflow from the Source I in the Orion-KL region
By Samuel George 3933 days agoarxiv.org - In this {\it Letter}, we present sensitive millimeter SiO (J=5-4; $\nu$=0) line observations of the outflow arising from the enigmatic object Orion Source I made with the Atacama Large Millimeter/Submillimeter Array (ALMA). The observations reveal...Polarisation properties of Milky-Way-like galaxies
By Samuel George 3934 days agoarxiv.org - (Abridged) We study the polarisation properties, magnetic field strength, and synchrotron emission scale-height of Milky-Way-like galaxies in comparison with other spiral galaxies. We use our 3D-emission model of the Milky Way Galaxy for viewing the...Fresh Activity in Old Systems: Radio AGN in Fossil Groups of Galaxies
By Samuel George 3937 days agoarxiv.org - We present the first systematic 1.4 GHz Very Large Array radio continuum survey of fossil galaxy group candidates. These are virialized systems believed to have assembled over a gigayear in the past through the merging of galaxy group members into a...A search for linear polarization in the active galactic nucleus 3C 84 at 239 and 348 GHz
By Samuel George 3939 days agoarxiv.org - We report a search for linear polarization in the active galactic nucleus (AGN) 3C 84 (NGC 1275) at observed frequencies of 239 GHz and 348 GHz, corresponding to rest-frame frequencies of 243 GHz and 354 GHz. We collected polarization data with the...Low-frequency GMRT observations of the magnetic Bp star HR Lup (HD 133880)
By Samuel George 3945 days agoarxiv.org - We present radio observations of the magnetic chemically peculiar Bp star HR Lup (HD 133880) at 647 and 277 MHz with the GMRT. At both frequencies the source is not detected but we are able to determine upper limits to the emission. The 647 MHz...The SED of Low-Luminosity AGNs at high-spatial resolution
By Samuel George 3946 days agoarxiv.org - The inner structure of AGNs is expected to change below a certain luminosity limit. The big blue bump, footprint of the accretion disk, is absent for the majority of low-luminosity AGNs (LLAGNs). Moreover, recent simulations suggest that the torus,...Direction-Dependent Polarised Primary Beams in Wide-Field Synthesis Imaging
By Samuel George 3946 days agoarxiv.org - The process of wide-field synthesis imaging is explored, with the aim of understanding the implications of variable, polarised primary beams for forthcoming Epoch of Reionisation experiments. These experiments seek to detect weak signatures from...
