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Table 1.

Spectral indices derived from electron flux spectra, count spectra, and regularized count spectra, in the case of several flaring events.

Event OSPEX Electron flux spectral images Count images Regularized count images
SOL2021-05-08T18 γ = 5.28 ± 0.18 δ = 4.53 ± 0.07 γ = 4.94 ± 0.24 γ = 5.50 ± 0.04
SOL2021-08-26T23 γ = 5.65 ± 0.12 δ = 4.59 ± 0.11 γ = 5.27 ± 0.17 γ = 5.57 ± 0.06
SOL2022-01-20T05 γ = 6.51 ± 0.26 δ = 5.07 ± 0.03 γ = 6.25 ± 0.14 γ = 6.36 ± 0.01
SOL2022-08-28T16 γ = 6.74 ± 0.18 δ = 4.97 ± 0.04 γ = 6.88 ± 0.24 γ = 6.81 ± 0.03
SOL2022-09-29T14 γ = 4.54 ± 0.05 δ = 3.68 ± 0.01 γ = 4.24 ± 0.11 γ = 4.42 ± 0.01

Notes. First column: event date. Second column: photon power-law index γ obtained by fitting spatially integrated spectra with OSPEX. Third column: electron power-law index δ obtained by fitting spatially integrated electron flux spectral images. Fourth and fifth columns: photon power-law index γ obtained by fitting spatially integrated count images and spatially integrated regularized count images, respectively, assuming a unit detector response matrix. The uncertainties in Cols. 3, 4, and 5 are determined by repeating the computation for 10 random realizations of the input visibilities.

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