Suzaku And Chandra Views Of The Diffuse Hot Gas Toward Lmc X-3

Details Suzaku And Chandra Views Of The Diffuse Hot Gas Toward Lmc X-3 Suzaku And Chandra Views Of The Diffuse Hot Gas Toward Lmc X-3

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...21116221y&link_type=abstract

American Astronomical Society, AAS Meeting #211, #162.21

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Scientific paper

Diffuse hot gas can be traced effectively by its X-ray absorption and emission. We present a joint-analysis of these tracers to characterize the spatial and temperature distributions of the hot gas along the sight-line of LMC X-3. We find that observed emission line strengths of OVII and OVIII are inconsistent with the absorption line ratio of the same ions, if the emitting/absorbing gas is assumed to be isothermal in a collisional ionization equilibrium. We then assume the gas temperature and density to be decreasing exponentially with the vertical distance from the Galactic plane and build a disk gas model. We find that both the emission and absorption data can be fitted well with this model. A joint analysis gives the exponential scale heights as 3.1 and 2.5 kpc for the density and temperature, respectively. These small scale heights suggest that the hot gas in the sight-line of LMC X-3 is consistent with an origin close to the Galactic plane.

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