The Wide Field Monitor onboard the Chinese-European X-ray mission eXTP

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Hernanz M., Brandt S., Zand J. I., Evangelista Y., Meuris A., Tenzer C., ...More

Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray Part of SPIE Astronomical Telescopes and Instrumentation Conference, Montreal, Canada, 17 - 22 July 2022, vol.12181 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 12181
  • Doi Number: 10.1117/12.2628335
  • City: Montreal
  • Country: Canada
  • Keywords: X-ray timing, X-ray spectroscopy, compact objects: black holes, neutron stars and white dwarfs, gamma-ray bursts, X-ray bursts, gravitational wave events, silicon drift detectors, coded mask imaging
  • Istanbul Technical University Affiliated: Yes


The eXTP (enhanced X-ray Timing and Polarimetry) mission is a major project of the Chinese Academy of Sciences (CAS), with a large involvement of Europe. The scientific payload of eXTP includes four instruments: the SFA (Spectroscopy Focusing Array) and the PFA (Polarimetry Focusing Array) - led by China - the LAD (Large Area Detector) and the WFM (Wide Field Monitor) - led by Europe (Italy and Spain). They offer a unique simultaneous wide-band X-ray timing and polarimetry sensitivity. The WFM is a wide field X-ray monitor instrument in the 2-50 keV energy range, consisting of an array of six coded mask cameras with a field of view of 180 degrees x90 degrees at an angular resolution of 5 arcmin and 4 silicon drift detectors in each camera. Its unprecedented combination of large field of view and imaging down to 2 keV will allow eXTP to make important discoveries of the variable and transient X-ray sky and is essential in detecting transient black holes, that are part of the primary science goals of eXTP, so that they can be promptly followed up with other instruments on eXTP and elsewhere.