The Supergiant Shell LMC2: II. Physical Properties of the 10^6 K Gas

Details The Supergiant Shell LMC2: II. Physical Properties of the 10^6 K Gas The Supergiant Shell LMC2: II. Physical Properties of the 10^6 K Gas

2000-08-28

arxiv.org/abs/astro-ph/0008440v1

Astronomy and Astrophysics

Astrophysics

29 pages, 5 figures, to be published in ApJ

Scientific paper

10.1086/317865

LMC2 has the highest X-ray surface brightness of all know supergiant shells in the Large Magellanic Cloud (LMC). The X-ray emission peaks within the ionized filaments that define the shell boundary, but also extends beyond the southern border of LMC2 as an X-ray bright spur. ROSAT HRI images reveal the X-ray emission from LMC2 and the spur to be truly diffuse, indicating a hot plasma origin. We have obtained ROSAT PSPC and ASCA SIS spectra to study the physical conditions of the hot gas interior to LMC2 and the spur. Raymond-Smith thermal plasma model fits to the X-ray spectra, constrained by HI 21-cm emission-line measurements of the column density, show the plasma temperature of the hot gas interior of LMC2 to be kT = 0.1 - 0.7 keV and of the spur to be kT = 0.1 - 0.5 keV. We have compared the physical conditions of the hot gas interior to LMC2 with those of other supergiant shells, superbubbles, and supernova remnants (SNRs) in the LMC. We find that our derived electron densities for the hot gas inside LMC2 is higher than the value determined for the supergiant shell LMC4, comparable to the value determined for the superbubble N11, and lower than the values determined for the superbubble N44 and a number of SNRs.

Affiliated with

Also associated with

No associations

Rating

The Supergiant Shell LMC2: II. Physical Properties of the 10^6 K Gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Supergiant Shell LMC2: II. Physical Properties of the 10^6 K Gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Supergiant Shell LMC2: II. Physical Properties of the 10^6 K Gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-268595