On the Shape of the Local Bubble

Abstract

The shape of the local bubble is modeled in the framework of the thin layer approximation. The asymmetric shape of the local bubble is simulated by introducing axial profiles for the density of the interstellar medium, such as exponential, Gaussian, inverse square dependence and Navarro-Frenk-White. The availability of some observed asymmetric profiles for the local bubble allows us to match theory and observations via the observational percentage of reliability. The model is compatible with the presence of radioisotopes on Earth.

Energy Conservation in the Thin Layer Approximation: VI. Bubbles and Super-Bubbles

“…The local bubble (LB) has already been simulated in the framework of the conservation of momentum [29]; here we adopt the framework of the conservation of energy. The numerical solution is shown as a cut in the x-z plane: see Figure 7 for a medium in the presence of self-gravity as given by Equation ( 9) and Figure 8 for a Gaussian density profile as given by Equation ( 18).…”