The LOFT Ground Segment

E. Bozzo, A. Antonelli, A. Argan, D. Barret, P. Binko, Søren Brandt, E. Cavazzuti, T. Courvoisier, J. W. den Herder, M. Feroci, C. Ferrigno, P. Giommi, D. Götz, L. Guy, M. Hernanz, J. J. M. in't Zand, D. Klochkov, E. Kuulkers, C. Motch, D. LumbA. Papitto, C. Pittori, R. Rohlfs, A. Santangelo, C. Schmid, A. D. Schwope, P. J. Smith, N. A. Webb, J. Wilms, S. Zane

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    LOFT, the Large Observatory For X-ray Timing, was one of the ESA M3 mission candidates that completed their assessment phase at the end of 2013. LOFT is equipped with two instruments, the Large Area Detector (LAD) and the Wide Field Monitor (WFM). The LAD performs pointed observations of several targets per orbit (~90 minutes), providing roughly ~80 GB of proprietary data per day (the proprietary period will be 12 months). The WFM continuously monitors about 1/3 of the sky at a time and provides data for about ~100 sources a day, resulting in a total of ~20 GB of additional telemetry. The LOFT Burst alert System additionally identifies on-board bright impulsive events (e.g., Gamma-ray Bursts, GRBs) and broadcasts the corresponding position and trigger time to the ground using a dedicated system of ~15 VHF receivers. All WFM data are planned to be made public immediately. In this contribution we summarize the planned organization of the LOFT ground segment (GS), as established in the mission Yellow Book 1 . We describe the expected GS contributions from ESA and the LOFT consortium. A review is provided of the planned LOFT data products and the details of the data flow, archiving and distribution. Despite LOFT was not selected for launch within the M3 call, its long assessment phase (> 2 years) led to a very solid mission design and an efficient planning of its ground operations.
    Original languageEnglish
    Title of host publicationSpace Telescopes and Instrumentation 2014 : Ultraviolet to Gamma Ray
    EditorsTadayuki Takahashi, Jan-Willem A. der Herder, Mark Bautz
    Number of pages7
    PublisherSPIE - International Society for Optical Engineering
    Publication date2014
    Article number91446A
    Publication statusPublished - 2014
    EventSpace Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray - Palais des congrès de Montréal, Montréal, Canada
    Duration: 22 Jun 201426 Jun 2014
    Conference number: 9144


    ConferenceSpace Telescopes and Instrumentation 2014
    LocationPalais des congrès de Montréal
    SeriesProceedings of SPIE - The International Society for Optical Engineering


    • LOFT
    • X-rays
    • Ground segment
    • Space mission


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