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http://hdl.handle.net/20.500.12386/24091
Titolo: | Combining survey data with single-dish observations | Autori: | Trasatti, Monica Giovannini, Gabriele Klein, Uli BONAFEDE, ANNALISA GOVONI, FEDERICA MURGIA, MATTEO |
Data pubblicazione: | 2015 | Rivista: | POS PROCEEDINGS OF SCIENCE | Numero: | 267 | Abstract: | Sky surveys represent a fundamental data source for astronomy. Radio surveys, as well as pointed observations, performed with interferometers might be affected by the so-called zero-spacing problem when observing extended sources at relatively high frequencies. This problem cause the most extended features in the source to be filtered out due to the lack of antenna-pairs with small separations. Here we show that interferometric survey data can be successfully combined with pointed observations performed with a single-dish telescope to produce images with high resolution and correct total power information.Sky surveys represent a fundamental data source for astronomy. Radio surveys, as well as pointed observations, performed with interferometers might be affected by the so-called zero-spacing problem when observing extended sources at relatively high frequencies. This problem cause the most extended features in the source to be filtered out due to the lack of antenna-pairs with small separations. Here we show that interferometric survey data can be successfully combined with pointed observations performed with a single-dish telescope to produce images with high resolution and correct total power information. | Titolo del convegno: | The many facets of extragalactic radio surveys: towards new scientific challenges | Luogo del convegno: | Bologna | Periodo del convegno: | 20-23 October 2015 | URI: | http://hdl.handle.net/20.500.12386/24091 | URL: | https://pos.sissa.it/267/051/ | ISSN: | 1824-8039 | DOI: | 10.22323/1.267.0051 | Bibcode ADS: | 2015fers.confE..51T | Fulltext: | open |
È visualizzato nelle collezioni: | 3.01 Contributi in Atti di convegno |
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