Abstract
We present and discuss recent near infrared observations of Sagittarius A*, the supermassive black hole in the centre of our Galaxy. Since 2003 this source has been observed photometrically, polarimetrically, and spectroscopically in H, K and L bands (1.5-4.1mum). The emission shows up in form of outbursts occuring few times per day and lasting typically 1-3 hours. These ``flares'' show quasi-periodic sub-structures at timescales of ∼15 minutes. They are significantly polarised and show a variable spectral colour index. All in all, the observations point towards decaying plasma hotspots orbiting the black hole on relativistic orbits as a source of NIR synchrotron emission.
