Its X-ray spectrum is more consistent with a Compton-thick cold reflection source, which means that the source is hidden behind dense material, mainly gas and dust, and the X-rays observed have been reflected, but a Compton-thin transmission model could not be ruled out.

[7] The black hole has been detected in hard X-rays, which are not absorbed by the Compton-thick column, by INTEGRAL.

It is a grand design spiral galaxy, with two tightly wrapped arms emanating from the bulge.

The arms are thin, smooth and well defined and can be traced for nearly one and a half revolutions before fading.

[9] Two symmetric arm sections or arcs are observed in the central part of the galaxy.