1 National Space Institute, Technical University of Denmark2 Astrophysics, National Space Institute, Technical University of Denmark3 IT-Department, National Space Institute, Technical University of Denmark4 Institute of Space Sciences5 National Institute for Astrophysics6 University of Geneva7 IRAP8 Instituto de Astrofísica de Andalucía9 Commisariat Energie Atomique10 SRON11 Academy of Sciences of the Czech Republic12 University of Amsterdam13 University of Helsinki14 Space Research Centre15 Instituto Nazionale di Fisica Nucleare16 University of Tübingen17 Freidrich-Alexander-University of Erlangen-Nürnberg18 Copernicus Astronomical Center
LOFT (Large Observatory For X-ray Timing) is one of the four candidate missions currently under assessment study for the M3 mission in ESAs Cosmic Vision program to be launched in 2024. LOFT will carry two instruments with prime sensitivity in the 2–30 keV range: a 10 m2 class large area detector (LAD) with a <1° collimated field of view and a wide field monitor (WFM) instrument. The WFM is based on the coded mask principle, and 5 camera units will provide coverage of more than 1/3 of the sky. The prime goal of the WFM is to detect transient sources to be observed by the LAD. With its wide field of view and good energy resolution of <500 eV, the WFM will be an excellent instrument for detecting and studying GRBs and X-ray flashes. The WFM will be able to detect ~150 gamma ray bursts per year, and a burst alert system will enable the distribution of ~100 GRB positions per year with a ~1 arcmin location accuracy within 30 s of the burst.
E a S Publications Series, 2013, Vol 61, p. 617-623