… and Polarimetry (eXTP) mission for studies related to accretion flows in the strong field
gravity regime around both stellar-mass and supermassive black-holes. eXTP has the unique …

… remnants, accreting white dwarfs, low and high mass X-ray … eXTP will be excellently suited
to study one common aspect … eXTP are dense matter physics and gravity in the strong field …

… • Strong gravity dynamical frequencies just detected in current (RXTE) data • eXTP diagnoses
strong field gravity … – timing of the flux variations – time resolved spectroscopy at very high …

… propagation of light in strong gravity and neutron star models, … on properties of the intended
Large Area Detector (LAD). … will make eXTP an ideal mission to explore accretion flow …

… and Polarimetry (eXTP). In this proceeding, we describe the possible role of eXTP in the
context of multi-messenger astronomy and in particular on the synergies with gravitational wave …

… gravity (SFG) regime. Primary targets include isolated and … with eXTP on the primary
objectives involving accretion under … of General Relativity in the strong field regime (SFG). These …

… to investigate gravity in the strong-field regime by studying the … might host an accreting NS,
and 2) accreting NSs can attain … motion of matter in the strong field regime of General Relativity…

… The science rationale at the core of this scientific objective is discussed in detail in the
eXTP white paper on ‘Accretion in Strong Field Gravity with eXTP’ by De Rosa et al. (2019).A …

… of matter in extreme gravity conditions in the vicinity of … of the eXTP science case was
provided in a set of four papers discussing Dense matter2, Accretion in strong field gravity3, Strong …

… behavior in the strongfield regime are relativistically … in the eXTP white paper on accretion
in strong-field gravity. Another technique to measure the radius (at ISCO) of the of the accretion …