Kilogauss magnetic field and jet dynamics in the quasar NRAO 530

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Table 3.

Magnetic field estimates from the core-shift measurements.

Freq	Distance	B_coreshift
(GHz)	(pc)	(mG)
15.4	33.7	$45_{- 45}^{+ 72}$ $45^{+72}_{-45}$
22.2	22.2	$69_{- 69}^{+ 112}$ $69^{+112}_{-69}$
43.1	10.5	$145_{- 145}^{+ 239}$ $145^{+239}_{-145}$
86.2	4.8	$319_{- 319}^{+ 525}$ $319^{+525}_{-319}$
227.1	1.6	$959_{- 959}^{+ 1580}$ $959^{+1580}_{-959}$

Notes. The values are provided at the position of the apparent jet beginning at different frequencies. Columns are: Freq – frequency, Distance – deprojected distance along the jet, and B_coreshift – magnetic field estimated using B(r) = B₁ r⁻¹, where r is the distance along the jet and B₁ = 1.5 G.

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