[hal-01078404] Divergence in the Stefan-Boltzmann law at High Energy Density Conditions

It was recently detected an unidentified emission line in the stacked X-ray spectrum of galaxy clusters Since this line is not catalogued as being the emission of a known chemical element several hypotheses have been proposed for example that it is of a known chemical element but with an emissivity of 10 or 20 times the expected theoretical value Here we show that there is a divergence in the Stefan-Boltzmann equation at high energy density conditions This divergence is related to the correlation between gravitational mass and inertial mass and it can explain the increment in the observed emissivity



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