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Proceedings Paper

The digital data processing concepts of the LOFT mission
Author(s): C. Tenzer; A. Argan; A. Cros; Y. Favre; M. Gschwender; F. Jetter; A. Santangelo; S. Schanne; P. Smith; S. Suchy; P. Uter; D. Walton; H. Wende
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Paper Abstract

The Large Observatory for X-ray Timing (LOFT) is one of the five mission candidates that were considered by ESA for an M3 mission (with a launch opportunity in 2022 - 2024). LOFT features two instruments: the Large Area Detector (LAD) and the Wide Field Monitor (WFM). The LAD is a 10 m2-class instrument with approximately 15 times the collecting area of the largest timing mission so far (RXTE) for the first time combined with CCD-class spectral resolution. The WFM will continuously monitor the sky and recognise changes in source states, detect transient and bursting phenomena and will allow the mission to respond to this. Observing the brightest X-ray sources with the effective area of the LAD leads to enormous data rates that need to be processed on several levels, filtered and compressed in real-time already on board. The WFM data processing on the other hand puts rather low constraints on the data rate but requires algorithms to find the photon interaction location on the detector and then to deconvolve the detector image in order to obtain the sky coordinates of observed transient sources. In the following, we want to give an overview of the data handling concepts that were developed during the study phase.

Paper Details

Date Published: 24 July 2014
PDF: 12 pages
Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 914467 (24 July 2014); doi: 10.1117/12.2057061
Show Author Affiliations
C. Tenzer, Institut für Astronomie und Astrophysik Tübingen, Eberhard Karls Univ. Tübingen (Germany)
A. Argan, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
A. Cros, Institut de Recherche en Astrophysique et Planétologie (France)
Y. Favre, Univ. de Genève (Switzerland)
M. Gschwender, Institut für Astronomie und Astrophysik Tübingen, Eberhard Karls Univ. Tübingen (Germany)
F. Jetter, Institut für Astronomie und Astrophysik Tübingen, Eberhard Karls Univ. Tübingen (Germany)
A. Santangelo, Institut für Astronomie und Astrophysik Tübingen, Eberhard Karls Univ. Tübingen (Germany)
S. Schanne, CEA-IRFU (France)
P. Smith, Mullard Space Science Lab. (United Kingdom)
S. Suchy, Institut für Astronomie und Astrophysik Tübingen, Eberhard Karls Univ. Tübingen (Germany)
P. Uter, Institut für Astronomie und Astrophysik Tübingen, Eberhard Karls Univ. Tübingen (Germany)
D. Walton, Univ. de Genève (Switzerland)
H. Wende, Institut für Astronomie und Astrophysik Tübingen, Eberhard Karls Univ. Tübingen (Germany)


Published in SPIE Proceedings Vol. 9144:
Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Jan-Willem A. den Herder; Mark Bautz, Editor(s)

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