Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/23881
Titolo: | UNIMAP: a generalized least-squares map maker for Herschel data | Autori: | Piazzo, Lorenzo Calzoletti, Luca FAUSTINI, Fabiana Pestalozzi, Michele PEZZUTO, Stefano ELIA, Davide Quintino DI GIORGIO, Anna Maria MOLINARI, Sergio |
Data pubblicazione: | 2015 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 447 | Fascicolo: | 2 | Da pagina:: | 1471 | Abstract: | The Herschel space telescope hosts two infrared photometers having an unprecedented resolution, sensitivity and dynamic range. The map making, i.e. the formation of sky images from the instruments' data, is critical for the full exploitation of the satellite and is a difficult task, since the readouts are affected by several disturbances, most notably by correlated noise. An effective map making approach is based on generalized least squares (GLS). However, when applied to Herschel data this approach poses several challenges and requires a specific pre- and post-processing. In the paper, we describe these challenges and introduce a set of algorithms and procedures which successfully address the issues. We also describe the implementation of the procedures and how these are integrated into an image formation software called UNIMAP, which is the first GLS map maker capable of automatically producing quality Herschel images with manageable memory and complexity requirements. | Acknowledgments: | We would like to thank David Ikhenaode (DIET) and Luca De Nardis (DIET) for helping with the compiler and Eugenio Schisano (IAPS) for performing initial performance verification. Moreover unimap is indebted to its users, who often gave suggestions or spotted problems, and in particular with Kazi Kljrygl (ESTEC) and Bruno Altieri (ESAC). Moreover, we are deeply indebted to the anonymous reviewer for his precious suggestions. | URI: | http://hdl.handle.net/20.500.12386/23881 | URL: | https://academic.oup.com/mnras/article/447/2/1471/2593620 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stu2453 | Bibcode ADS: | 2015MNRAS.447.1471P | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
065Unimap.pdf | PDF editoriale | 4.13 MB | Adobe PDF | Visualizza/apri |
Page view(s)
89
controllato il 28-mar-2024
Download(s)
14
controllato il 28-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.