AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331

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Table 3

Equipartition magnetic field B_eq and corresponding corrected values .

α	γ_min	B_eq[μG]	[μG]

–1^a	100	2.18	3.86
–1^a	700	2.18	2.37
–1.8	100	4.40	11.26
–1.8	700	4.40	3.925

Notes. The IC equivalent magnetic field for the redshift of J1431.8+1331 is B_IC = 3.57 μG. The minimum magnetic field (resulting in maximum radiative ages) is B_min = 2.52 μG. The correction to the derived equipartition magnetic field value is performed according to Brunetti et al. (1997) and Beck & Krause (2005).

^(a)

Injection spectral index.

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