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Table 4.

Steep spectrum sources.

PID α
2
45
57
62
81
118
130
178
200
201
219
244
249
262
277
298
308
319
328
337
341
345

Notes. The spectral slope is in the unit of energy index α of a power-law continuum in energy – flux density: fE ∝ Eα.

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