Supergiant Fast X-ray Transients and Other Wind Accretors

TL;DR

This paper proposes a unified framework based on clumpy wind models to explain the diverse behaviors of supergiant fast X-ray transients and other wind accretors, emphasizing the role of orbital geometry.

Contribution

It introduces a comprehensive model linking various wind accreting X-ray sources through orbital geometry and wind clumping effects.

Findings

A coherent interpretation of different X-ray source behaviors.

The importance of orbital geometry in wind accretion phenomena.

A unified framework for supergiant X-ray binaries and transients.

Abstract

Supergiant Fast X-ray Transients are obviously related to persistent Supergiant X-ray Binaries. Any convincing explanation for their behaviour must consistently take into account all types of X-ray sources powered by wind accretion. Here we present a common framework for wind accreting sources, within the context of clumpy wind models, that allows a coherent interpretation of their different behaviours as an immediate consequence of diverse orbital geometries.