Discovery of a Light Echo from SN 2003gd

  title={Discovery of a Light Echo from SN 2003gd},
  author={Ben E. K. Sugerman},
  journal={The Astrophysical Journal},
  • B. Sugerman
  • Published 1 September 2005
  • Physics
  • The Astrophysical Journal
Archival HST/ACS data reveal details of a light echo around SN 2003gd in the galaxy M74, only the fifth supernova around which resolved echoes have been reported. An echo is detected 03 from the supernova between position angles of 250° and 360°, with a fainter signal present at a few other position angles. This material lies ~180 pc in front of the supernova, with a thickness of 60-120 pc, and may delineate the disk of M74. This structure has a gas density of 1-2 cm-3, typical of the… Expand

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