The Large Observatory for X-ray Timing (LOFT)

Description
High-time-resolution X-ray observations of compact objects provide direct access to strong-field gravity, the equation of state of ultra-dense matter and black hole masses and spins. A 10 m^2-class instrument in combination with good spectral resolution is required to exploit the relevant diagnostics and answer two of the fundamental questions of the European Space Agency (ESA) Cosmic Vision Theme "Matter under extreme conditions", namely: does matter orbiting close to the event horizon follow the predictions of general relativity? What is the equation of state of matter in neutron stars? The Large Observatory For X-ray Timing (LOFT), selected by ESA as one of four Cosmic Vision M3 candidate missions to undergo an assessment phase, will revolutionise the study of collapsed objects in our galaxy and of the brightest supermassive black holes in active galactic nuclei. Thanks to an innovative design and the development of large-area monolithic Silicon Drift Detectors, the Large Area Detector (LAD) on board LOFT will achieve an effective area of ~10 m^2 (more than an order of magnitude larger than any spaceborne predecessor) in the 2-30 keV range (up to 50 keV in expanded mode), yet still fits a conventional platform and small/medium-class launcher. With this large area and a spectral resolution of ~200 eV, LOFT will yield unprecedented information on strongly curved spacetimes and matter under extreme conditions of density and magnetic field. Moroever, hundreds of galactic and extragalactic X-ray sources of different classes will be studied by LOFT with unprecedented throughput over about half of its 4-year operational lifetime.
Organised by Dr. Alfio Bonanno