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- W2002321856 abstract "We have reinvestigated the possibility that a hot intergalactic medium produces the 5–200 keV X-ray background, including relativistic corrections for the gas emissivity and thermodynamics and Compton scattering on the microwave background. We show that thermal bremsstrahlung provides an accurate fit to the observed X-ray spectrum, provided the gas was heated at a redshift <6. The microwave background develops a high-energy tail, due to Compton scattering, which may contribute a significant fraction of the infrared background at 100 μm. Despite being the only physical model that adequately explains the spectrum of the X-ray background, the enormous total energy required is a severe problem. The gas density that we estimate is reduced by a factor of 2 below that obtained by previous workers and, if uniform, is too large to be consistent with current estimates of the cosmic abundance of deuterium. Small-scale clumping of the gas can overcome this discrepancy if there is pressure confinement by a yet hotter, lower density medium." @default.
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- W2002321856 date "1986-05-01" @default.
- W2002321856 modified "2023-09-23" @default.
- W2002321856 title "A hot intergalactic medium?" @default.
- W2002321856 doi "https://doi.org/10.1093/mnras/220.2.439" @default.
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