SKA1 AA* and AA4 will roughly double-to-triple the known pulsar population and supply thousands of new RMs, enabling detailed 3D mapping of Galactic disk and halo magnetic fields.
Constraints from globular cluster pulsars on the magnetic field in the Galactic halo
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abstract
The Galactic magnetic field plays an important role in the evolution of the Galaxy, but its small-scale behaviour is still poorly known. It is also unknown whether it permeates the halo of the Galaxy or not. By using observations of pulsars in the halo globular cluster 47 Tucanae, we probed the Galactic magnetic field at arcsecond scales for the first time and discovered an unexpected large gradient in the component of the magnetic field parallel to the line of sight. This gradient is aligned with a direction perpendicular to the Galactic disk and could be explained by magnetic fields amplified to some 60 {\mu}G within the globular cluster. This scenario supports the existence of a magnetized outflow that extends from the Galactic disk to the halo and interacts with the studied globular cluster.
fields
astro-ph.HE 1years
2026 1verdicts
ACCEPT 1representative citing papers
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Exploring the Magnetic Field Structure of the Milky Way with Pulsars in the SKA Era
SKA1 AA* and AA4 will roughly double-to-triple the known pulsar population and supply thousands of new RMs, enabling detailed 3D mapping of Galactic disk and halo magnetic fields.