The Local Bubble: a magnetic veil to our Galaxy

Understand

The magnetic field in the local interstellar medium does not follow the large-scale Galactic magnetic field.

• The local magnetic field has probably been distorted by the Local Bubble, a cavity of hot ionized gas extending all around the Sun and surrounded by a shell of cold neutral gas and dust.
• However, so far no conclusive association between the local magnetic field and the Local Bubble has been established.
• Here we develop an analytical model for the magnetic field in the shell of the Local Bubble, which we represent as an inclined spheroid, off-centred from the Sun.