I present a brief up-to-date review of the current understanding of Supergiant Fast X-ray Transients, with an emphasis on the observational point of view. After more than a decade since their discovery, a remarkable progress has been made in getting the picture of their phenomenology at X-ray energies. However, a similar in-depth investigation of the properties of the supergiant companions is needed, but has started more recently. A multifrequency approach is the key to fully understand the physical mechanism driving the SFXT behaviour, still under debate.
Thu, 12 Oct 17
Comments: 14 pages; Submitted to the Proceedings of the “XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop”, held on 12-17 June 2017, Palermo, Italy