Very Large Telescope FORS1 Imaging Polarimetry of M83 (NGC 5236). I. Search for Light Echoes from Historical Supernovae

  title={Very Large Telescope FORS1 Imaging Polarimetry of M83 (NGC 5236). I. Search for Light Echoes from Historical Supernovae},
  author={Martino Romaniello and Ferdinando Patat and Nino Panagia and William B. Sparks and Roberto Gilmozzi and Jason Spyromilio},
  journal={The Astrophysical Journal},
  pages={250 - 258}
We have used FORS1 at the ESO Very Large Telescope to search for light echoes in imaging polarimetry from four historical supernovae in the face-on nearby spiral galaxy M83 (NGC 5236). No echoes were detected around our targets (SN 1923A, SN 1945B, SN 1950B, and SN 1957D). This implies that the interstellar medium in their environs is rather tenuous (a few particles per cm3), possibly as a result of previous supernova explosions that could have cleared the immediate vicinities of our targets… 

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