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Table 3.

Spectral indices of the optical spectrum and interpolation between the X-ray and γ-ray spectrum.

Time frame αJ − B X-ray–γ-ray index [EX, Eγ]
Preflare −0.47 ± 0.01
Night 1 −0.55 ± 0.02 0.42 ± 0.02 [7.1 keV, 150 MeV]
Maximum 0.45 ± 0.01 [5.5 keV, 150 MeV]
Night 2 −0.57 ± 0.01 0.44 ± 0.02 [5.2 keV, 150 MeV]

Notes. The fourth column gives the energy range of the X-ray to γ-ray interpolation.

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