X-rays from superbubbles in the large magellanic cloud. III. X-ray-dim superbubbles

You Hua Chu, Hsiao Wei Chang, Yu Ling Su, Mordecai Mark Mac Low

Research output: Contribution to journalArticle

Abstract

Only X-ray-bright superbubbles have been reported in the past. ROSAT provides an excellent opportunity to study X-ray-dim superbubbles. We have analyzed the ROSAT Position Sensitive Proportional Counter observations of four superbubbles in the Large Magellanic Cloud - DEM 31, DEM 105, DEM 106, and DEM 137. None of the four is detected at more than the 2 σ level. The observed luminosities and the 3 σ upper limits are consistent with the luminosities expected from energy-conserving bubbles. These results confirm that not all superbubbles are X-ray bright, suggesting that an intermittent process such as hidden supernova remnants is responsible for the X-ray-bright superbubbles.

Original languageEnglish (US)
Pages (from-to)157-162
Number of pages6
JournalAstrophysical Journal
Volume450
Issue number1
DOIs
StatePublished - Sep 1 1995

Keywords

  • ISM: bubbles
  • Magellanic Clouds
  • X-rays: ISM

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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