The magnetic field structure of the central region in M 31

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Table 1

Observational details.

Centre position	RA =
(J2000)	Dec =
Distance	750 ± 30 kpc
Angular resolution	15′′
Along major axis	15′′54.5 ± 2.2 pc
Rms noise^a:
3.6 cm total power	σ_t = 5.5μJy/beam
3.6 cm PI	σ_PI = 4.8μJy/beam
6.2 cm total power	σ_t = 7.5μJy/beam
6.2 cm PI	σ_PI = 6.8μJy/beam

Notes.

^(a)

The noise values refer to the central area of the primary beam; they increase with distance from the field centre.

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