Multi-wavelength behaviour of the radio galaxy SBS 1343+537: γ-ray flaring activity discovered by Fermi-LAT and coordinated Swift and SRT observations

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Table 1.

Averaged spectral parameters for the two periods (flare event, and Fermi-LAT full period).

Period	Γ	$N_{0} (MeV {cm}^{- 2} s^{- 1})$ $Mathematical equation: $ \mathrm{N}_{0}\,{\left({\mathrm{MeV}}\,{\mathrm{cm}}^{-2}\,{\mathrm{s}}^{-1}\right)} $$	$Φ_{0} (erg {cm}^{- 2} s^{- 1})$ $Mathematical equation: $ \Phi_{0}\,{\left({\mathrm{erg}}\,{\mathrm{cm}}^{-2}\,{\mathrm{s}}^{-1}\right)} $$	α	β
Flare	2.368 ± 0.023	(1.116±0.030) × 10⁻¹¹	(6.27±0.17) × 10⁻⁶	2.416 ± 0.021	−0.0504 ± 0.0088
Full period	2.756 ± 0.086	(8.82±0.83) × 10⁻¹³	(5.32±0.61) × 10⁻⁷	2.756 ± 0.095	0.005 ± 0.058
4FGL-DR4	2.678 ± 0.081	(1.001±0.094) × 10⁻¹²	(6.99±0.75) × 10⁻⁷	2.63 ± 0.11	0.105 ± 0.065

Notes. We include, for reference, also the values reported in the 4FGL-DR4 catalogue (Ballet et al. 2024).

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