Pre-Supernova Ring Around PSR0540-69
Caraveo, Patrizia A. ; Mignani, Roberto ; Bignami, Giovanni F.
Jan - 1998

journal : Memorie della Societa Astronomia Italiana
type: Article Journal

Abstract
SNR0540-69 is a supernova remnant in the LMC, harbouring a young (1600 yrs) radio/optical/X-ray pulsar (P=50 ms). Ground based Halpha imaging of the region has shown a unique spiral-like structure centered around the pulsar. In narrow band HST imaging, the feature seems resolved in a ring-like structure, probably ejected by the progenitor star in a pre-supernova phase (> 10\^4 yrs ago).

keywords : Astrophysics,G. F. Bignami: ASI authors