Resolving SNR 0540-6944 from LMC X-1 with Chandra

Rosa Murphy Williams, Robert Petre, You Hua Chu, C. H.Rosie Chen

Research output: Contribution to journalArticlepeer-review


We examine the supernova remnant SNR 0540-697 in the Large Magellanic Cloud (LMC) using data from the Chandra Advanced CCD Imaging Spectrometer. The X-ray emission from this supernova remnant (SNR) had previously been hidden in the bright emission of the nearby X-ray binary LMC X-1; however, new observations with Chandra can finally reveal the SNR's structure and spectrum. We find the SNR to be a thick-shelled structure about 19 pc in diameter, with a brightened northeast region. Spectral results suggest a temperature of 0.31 keV and an X-ray luminosity (0.3-3.0 keV) of 8.4 × 1033 ergs s-1. We estimate an age of 12,000-20,000 yr for this SNR, but note that this estimate does not take into account the possibility of cavity expansion or other environmental effects.

Original languageEnglish (US)
Pages (from-to)L27-L30
JournalAstrophysical Journal
Issue number1 PART 2
StatePublished - Jun 10 2000


  • Galaxies: individual (Large Magellanic Cloud)
  • Supernova remnants
  • X-rays: ISM

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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