# Accretion in Strong Field Gravity with eXTP

## TL;DR

This paper discusses how the eXTP mission can use advanced spectral-timing-polarimetry techniques to study accretion flows and strong gravity effects around black holes, providing new insights into their inner regions.

## Contribution

It introduces the potential of the eXTP mission to analyze accretion flows using combined spectral, timing, and polarimetry methods in strong gravity regimes.

## Key findings

- eXTP can analyze rapid variations in accretion flows.
- The mission provides unprecedented insights into black hole inner regions.
- It enables detailed study of outflows driven by accretion.

## Abstract

In this paper we describe the potential of the enhanced X-ray Timing 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 capability of using advanced 'spectral-timing-polarimetry' techniques to analyze the rapid variations with three orthogonal diagnostics of the flow and its geometry, yielding unprecedented insight into the inner accreting regions, the effects of strong field gravity on the material within them and the powerful outflows which are driven by the accretion process.