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

doi:10.1086/176127

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 journal › Article › peer-review

71 Scopus citations

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 language	English (US)
Pages (from-to)	157-162
Number of pages	6
Journal	Astrophysical Journal
Volume	450
Issue number	1
DOIs	https://doi.org/10.1086/176127
State	Published - Sep 1 1995
Externally published	Yes

Keywords

ISM: bubbles
Magellanic Clouds
X-rays: ISM

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/176127

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title = "X-rays from superbubbles in the large magellanic cloud. III. X-ray-dim superbubbles",

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.",

keywords = "ISM: bubbles, Magellanic Clouds, X-rays: ISM",

author = "Chu, {You Hua} and Chang, {Hsiao Wei} and Su, {Yu Ling} and {Mac Low}, {Mordecai Mark}",

year = "1995",

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doi = "10.1086/176127",

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T1 - X-rays from superbubbles in the large magellanic cloud. III. X-ray-dim superbubbles

AU - Chu, You Hua

AU - Chang, Hsiao Wei

AU - Su, Yu Ling

AU - Mac Low, Mordecai Mark

PY - 1995/9/1

Y1 - 1995/9/1

N2 - 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.

AB - 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.

KW - ISM: bubbles

KW - Magellanic Clouds

KW - X-rays: ISM

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

Abstract

Keywords

ASJC Scopus subject areas

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