2020•International Journal of Geometric Methods in Modern PhysicsRequires access
A critical overview of stationary solar models based on polytropic gases
Addolorata Marasco, António Romano
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Abstract
We critically analyze the models of a main-sequence star based on polytropic gases. First, we put in evidence that the hypothesis of polytropic gas is compatible with the constitutive equation of an ideal gas if the transformations inside the star are adiabatic. Then, neither the mono- or the polyphasic models of an ideal gas can be applied inside the stellar core for the existence in this region of nuclear reactions. Moreover, we prove that polyphasic models doesn’t allow the existence of C1solutions of the stationary hydrodynamic equations.