Cygnus X-3

It is often considered to be a microquasar, and it is believed to be a compact object in a binary system which is pulling in a stream of gas from an ordinary star companion.

[2] Cygnus X-3 is also notable as the only microquasar firmly detected in the high energy gamma rays in the range >100 MeV.

The nature of the infrared spectrum and the x-ray emission is interpreted as a binary system containing a Wolf–Rayet (WR) star and a compact object.

A supernova or possible direct collapse to a black hole is expected within a million years or so.

[12] The cosmic ray events from Cygnus X-3 had previously led to exotic proposals such as a star made of quarks,[13] but are now explained as being produced in the relativistic jet.

The explanation for the unusual relationship between the x-rays and the gamma-ray and radio flares is that the compact objects produces jets along its axis of rotation, within the dense wind from the WR star.

Flares are produced during the transition to the hard state as the jets are interacting with the dense wind.