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The enhanced x-ray timing and polarimetry mission (Conference Presentation)
Author(s): Shuangnan Zhang; Marco Feroci; Fangjun Lu; Andrea Santangelo; Yupeng Xu; Shu Zhang

Paper Abstract

eXTP is a science mission designed to study the state of matter under extreme conditions of density, gravity and magnetism. Primary goals are the determination of the equation of state of matter at supra-nuclear density, the measurement of QED effects in highly magnetized star, and the study of accretion in the strong-field regime of gravity. Primary targets include isolated and binary neutron stars, strong magnetic field systems like magnetars, and stellar-mass and supermassive black holes. The mission carries a unique and unprecedented suite of state-of-the-art scientific instruments enabling for the first time ever the simultaneous spectral-timing-polarimetry studies of cosmic sources in the energy range from 0.5-30 keV (and beyond). Key elements of the payload are: the Spectroscopic Focusing Array (SFA) - a set of 9 X-ray optics for a total effective area of ~0.7 m2 and 0.5 m2 at 2 keV and 6 keV respectively, equipped with Silicon Drift Detectors offering 150 eV spectral resolution; the Large Area Detector (LAD) - a deployable set of 640 Silicon Drift Detectors, for a total effective area of ~3.4 m2, and spectral resolution better than 250 eV; the Polarimetry Focusing Array (PFA) – a set of 4 X-ray telescope, for a total effective area of >500 cm2 at 2 keV, equipped with imaging gas pixel photoelectric polarimeters; the Wide Field Monitor (WFM) - a set of 3 coded mask wide field units, equipped with position-sensitive Silicon Drift Detectors, each covering a 90 degrees x 90 degrees field of view. The eXTP international consortium includes major institutions of the Chinese Academy of Sciences and Universities in China, as well as major institutions in several European countries. The predecessor of eXTP, the XTP mission concept, has been selected and funded as one of the missions in the Strategic Pioneering Space Science Program of the Chinese Academy of Sciences since 2011. The strong European participation has ignificantly enhanced the scientific capabilities of eXTP. The planned launch date of the mission is 2025.

Paper Details

Date Published: 10 July 2018
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Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106991A (10 July 2018); doi: 10.1117/12.2314582
Show Author Affiliations
Shuangnan Zhang, Institute of High Energy Physics (China)
Marco Feroci, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Istituto Nazionale di Fisica Nucleare (Italy)
Fangjun Lu, Institute of High Energy Physics (China)
Andrea Santangelo, Eberhard Karls Univ. Tübingen (Germany)
Yupeng Xu, Institute of High Energy Physics (China)
Shu Zhang, Institute of High Energy Physics (China)


Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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