  There have been many speculations about the character of the dusty object
moving fast in the vicinity of the Galactic centre black hole. The recent
detection of polarized continuum emission provides new constraints for the
models. The fact that the object is intrinsically polarized implies that it is
non-spherical. The authors propose that a young star developing a bow shock can
explain the main characteristics. However, more observations in the future are
needed for the final confirmation of the nature of the source.
