Free Access

Table 23

Radio LF and HF spectral index distributions for different values of the break frequency νBreak and of the minimum number of frequency bands considered for the fit.

Low frequency High frequency
νBreak No. of frequencies Class No. of sources αLF σLF No. of sources αHF σHF

30 3 ALL 47 0.00 ± 0.04 0.27 69  −0.51 ± 0.04 0.30
30 5 ALL 46 0.00 ± 0.04 0.27 57  −0.49 ± 0.03 0.26
44 3 ALL 47  −0.02 ± 0.04 0.25 66  −0.64 ± 0.03 0.26
44 5 ALL 47  −0.02 ± 0.04 0.25 47  −0.62 ± 0.03 0.22
70 3 ALL 63  −0.08 ± 0.03 0.28 66  −0.67 ± 0.03 0.28
70 5 ALL 47  −0.02 ± 0.04 0.25 35  −0.65 ± 0.04 0.22
100 3 ALL 65  −0.11 ± 0.03 0.27 48  −0.56 ± 0.04 0.26
100 5 ALL 47  −0.02 ± 0.04 0.24 15  −0.52 ± 0.05 0.19

70 3 FSRQ 39  −0.11 ± 0.04 0.28 40  −0.73 ± 0.04 0.27
70 3 BL Lac 12  −0.08 ± 0.08 0.29 14  −0.51 ± 0.07 0.27
70 3 Unc. Type 12  −0.02 ± 0.08 0.29 12  −0.64 ± 0.07 0.25

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.