The effect of sideband ratio on line intensity for Herschel/HIFI
COMITO, Claudia
Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides [CASSIOPEE]
< Réduire
Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides [CASSIOPEE]
Langue
en
Article de revue
Ce document a été publié dans
Experimental Astronomy. 2014, vol. 37, n° 2, p. 433-452
Springer Link
Résumé en anglais
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 ...Lire la suite >
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.< Réduire
Mots clés en anglais
Astrophysics
Instrumentation and Methods for Astrophysics
Origine
Importé de halUnités de recherche