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Título: | VLA/JVLA monitoring of bright northern radio sources |
Autor: | Kurinsky, N.; Sajina, A.; Partridge, Bruce; Myers, S.; Chen, X.; López-Caniego, M. CSIC ORCID | Palabras clave: | Galaxies: active Radio continuum: galaxies Catalogues |
Fecha de publicación: | 2013 | Editor: | EDP Sciences | Citación: | Astronomy and Astrophysics 549: A133 (2013) | Resumen: | We report multiple epoch VLA/JVLA observations of 89 northern hemisphere sources, most with 37 GHz flux density >1 Jy, observed at 4.8, 8.5, 33.5, and 43.3 GHz. The high frequency selection leads to a predominantly flat spectrum sample, with 85% of our sources being in the Planck Early Release Compact Source Catalog (ERCSC). These observations allow us to: 1) validate Planck’s 30 and 44 GHz flux density scale; 2) extend the radio spectral energy distributions of Planck sources to lower frequencies allowing for the full 5−857 GHz regime to be studied; and 3) characterize the variability of these sources. At 30 GHz and 44 GHz, the JVLA and Planck flux densities agree to within ~3%. On timescales of less than two months the median variability of our sources is 2%. On timescales of about a year the median variability increases to 14%. Using the WMAP 7-year data, the 30 GHz median variability on a 1−6 years timescale is 16%. | Versión del editor: | http://dx.doi.org/10.1051/0004-6361/201219851 | URI: | http://hdl.handle.net/10261/109176 | DOI: | 10.1051/0004-6361/201219851 | Identificadores: | doi: 10.1051/0004-6361/201219851 issn: 0004-6361 e-issn: 1432-0746 |
Aparece en las colecciones: | (IFCA) Artículos |
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monitoring of bright.pdf | 452,85 kB | Adobe PDF | Visualizar/Abrir |
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