The effect of sideband ratio on line intensity for Herschel/HIFI

Ronan Higgins David Teyssier 1 Colin Borys J. Braine 2 Claudia Comito 3 Bertrand Delforge Frank Helmich Michael Olberg Volker Ossenkopf John Pearson 4 Russell Shipman
2 FORMATION STELLAIRE 2014
L3AB - Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux, OASU - Observatoire aquitain des sciences de l'univers, LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac], Université Sciences et Technologies - Bordeaux 1
Abstract : The Heterodyne Instrument for the Far Infrared (HIFI) on board the Herschel Space Observatory is composed of a set of fourteen double sideband mixers. We discuss the general problem of the sideband ratio (SBR) determination and the impact of an imbalanced sideband ratio on the line calibration in double sideband heterodyne receivers. The HIFI SBR is determined from a combination of data taken during pre-launch gas cell tests and in-flight. The results and some of the calibration artefacts discovered in the gas cell test data are presented here along with some examples of how these effects appear in science data taken in orbit.
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https://hal.archives-ouvertes.fr/hal-00978297
Contributeur : Marie-Paule Pomies <>
Soumis le : lundi 14 avril 2014 - 09:25:32
Dernière modification le : lundi 4 décembre 2017 - 15:14:07

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Ronan Higgins, David Teyssier, Colin Borys, J. Braine, Claudia Comito, et al.. The effect of sideband ratio on line intensity for Herschel/HIFI. Experimental Astronomy, springer Link, 2014, 37 (2), pp.433-452. 〈10.1007/s10686-014-9382-5〉. 〈hal-00978297〉

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