The Fermi Bubbles as a Superbubble

• 作者: Lorenzo Zaninetti
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 数学
• 关键词: ISM BUBBLES CLOUDS Galaxy DISK GALAXIES STARBURST
• 年，卷（期）: 2018,（2）
• 页码范围: 200-217
• 页数: 18页
• 分类号: O1

摘要

In order to model the Fermi bubbles we apply the theory of the superbubble (SB). A thermal model and a self-gravitating model are reviewed. We introduce a third model based on the momentum conservation of a thin layer which propagates in a medium with an inverse square dependence for the density. A comparison has been made between the sections of the three models and the section of an observed map of the Fermi bubbles. An analytical law for the SB expansion as a function of the time and polar angle is deduced. We derive a new analytical result for the image formation of the Fermi bubbles in an elliptical framework.