This paper reports the discovery of an infrared elliptical ring or shell surrounding the magnetar SGR 1900+14. It is suggested that a dust-free cavity was produced in the magnetar environment by the giant flare emitted by the source in August 1998 and concludes that SGR 1900+14 is unambiguously associated with a cluster of massive stars.
- S. Wachter
- E. Ramirez-Ruiz
- D. Figer