Changes in the nature of the spectral continuum and the stability of the cyclotron line in the X-ray pulsar GRO J2058+42

A. S. Gorban, S. V. Molkov, S. S. Tsygankov +2

The results of the broadband spectral and timing study of the transient X-ray pulsar GRO J2058+42 in a wide energy range at a low luminosity $L_x\simeq 2.5\times 10^{36}$ erg s$…