Total X-Ray Emission From The Lmc Observed With Halosat

We constrain the global parameters of the Large Magellanic Cloud (LMC) by modeling the first soft X-ray (0.4-6.8 keV) observations of the entire LMC produced in a single pointing with moderate spectral resolution by the HaloSat CubeSat. These data are best fit with the sum of two thermal plasma components in collisional ionization equilibrium and a power law. We find cool (0.210 +/- 0.014 keV) and hot (0.89 +/- 0.14 keV) components. The total X-ray luminosity of the LMC is (1.08 +/- 0.14) x 10(39) erg s(-1). X-ray binaries make up a large fraction of the emission with a luminosity of (6.0 +/- 0.8) x 10(38) erg s(-1), followed by cool gas from superbubbles, supernovae, and diffuse emission with a luminosity of (3.0 +/- 0.3) x 10(38) erg s(-1). The hot gas from star formation contributes the smallest fraction, with a luminosity of (1.9 +/- 0.5) x 10(38) erg s(-1). We estimate the total volume of the cool gas to be between (0.2-1.2) x 10(10) pc(3) and the hot gas to be between (1.0-5) x 10(7) pc(3) for filling factors of f = 1 and 0.2. These volumes result in a total thermal energy for the cool gas between (1.4-3) x 10(54) erg for electron densities of 0.017-0.04 cm(-3), and a thermal energy for the hot gas between (1.7-4) x 10(53) erg for electron densities of 0.12-0.3 cm(-3). This yields cooling timescales for the cool and hot gas of (1.5-3) x 10(8) yr and (1.8-6) x 10(7) yr, respectively.