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Table B.2.

Accreting NSs analysed in this work, along with their respective 3σ upper limits in the energy bands 200-800 keV and 1−2.2 MeV.

Source name 200-800 keVa 1-2.2 MeVa
A 0535+26 1.1 4.6
GX 304−1 0.5 4.3
Vela X-1 0.13 0.16
X Persei 0.7 1.5
Sco X-1 0.3 2.8
Swift J0243.6+6124 0.9 4.5
RX J0440.9+4431 2.4 3.3

Notes. a in units of 10−9 erg cm−2 s−1

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