Mathematics – Logic
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11723f&link_type=abstract
HST Proposal ID #11723. Cycle 17
Mathematics
Logic
Scientific paper
The Galactic supernova remnant 3C 58 shares several important properties with the Crab Nebula. It possesses a young, rapidly spinning pulsar and an associated compact optical/IR synchrotron wind nebula. This makes 3C 58, along with the Crab and PSR B0540-69 in the LMC, only the third such PWN detected in the optical and IR. Also like the Crab, 3C58 has been associated with a historically reported `guest star', in this case, the apparent SN of 1181 CE. Its optical nebulosity contains an unusually large fraction of shocked circumstellar material, with the remnant's high-velocity, N-rich ejecta knots exhibiting a strong bi-polar expansion asymmetry. Despite having a relatively extensive optical nebula, it is the only young and nearby Galactic SNR that has not yet been imaged by HST. However, some recent deep, high-resolution Gemini images show a surprising amount of fine-scale filament detail, revealing some peculiar optical emission morphologies. Here we propose a WFC3 imaging survey of 3C 58 in order to investigate: 1} the optical luminosity and emission efficiency of the remnant's young, 65.7 ms pulsar PSR J0205+6449 thereby providing a rare testing of pulsar emission models, 2} the effect of the remnant's expanding synchrotron nebula on the formation of Rayleigh-Taylor instabilities in its optical filaments like that observed so far only in the Crab through HST imaging, and 3} the fine-scale structure of 3C 58's slow moving circumstellar and high-velocity SN ejecta and the morphological and distribution differences between them.;
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