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arxiv: astro-ph/9810016 · v1 · submitted 1998-10-01 · 🌌 astro-ph

Pre-Supernova Ring Around PSR0540-69

Patrizia A. Caraveo (Istituto di Fisica Cosmica del CNR , Milano , Italy , also Istituto Astronomico , Roma , Italy) , Roberto Mignani (STECF-ESO , Garching
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Germany) Giovanni F. Bignami (Agenzia Spaziale Italiana Italy also Universita' di Pavia
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classification 🌌 astro-ph
keywords aroundimagingpre-supernovapulsarstructurebandcenteredejected
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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).

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