The Fermi bubbles as a Superbubble
arXiv:1806.09092 · doi:10.4236/ijaa.2018.82015
Abstract
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 have 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 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.
18 pages, 13 low quality figures
References in corpus (13)
- Giant Gamma-ray Bubbles from Fermi-LAT: AGN Activity or Bipolar Galactic Wind?
- The Spectrum and Morphology of the Fermi Bubbles
- Probing the Fermi Bubbles in Ultraviolet Absorption: A Spectroscopic Signature of the Milky Way's Biconical Nuclear Outflow
- The gas-to-extinction ratio and the gas distribution in the Galaxy
- Nuclear Outflow of the Milky Way: Studying the Kinematics and Spatial Extent of the Northern Fermi Bubble
- The Interaction of the Fermi Bubbles with the Milky Way's Hot Gas Halo
- Search for Very High Energy Gamma Rays from the Northern Bubble Region with HAWC
- A Hadronic-Leptonic Model for the Fermi Bubbles: Cosmic-Rays in the Galactic Halo and Radio Emission
- Magnetic substructure in the northern Fermi Bubble revealed by polarized WMAP emission
- Suzaku X-ray Observations of the Fermi Bubbles: Northernmost Cap and Southeast Claw Discovered with MAXI-SSC
- Multi-wavelength Emission from the Fermi Bubble II. Secondary Electrons and the Hadronic Model of the Bubble
- Giant HI Hole inside the 3-kpc Ring and the North Polar Spur - The Galactic Crater -
- Evolution of superbubbles in a self-gravitating disk