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Fig. 2

image

Light curves of corotating hotspots at the innermost part of accretion discs around a BH with rotational parameter a = 0.95rg (black lines) and a NS with a = 1.10rg (gray lines) viewed at inclinations of i = 30° (top panels) and i = 75° (bottom panels), respectively. Solid lines are used for non-magnetised accretion discs and dashed and dotted lines correspond to uniform and dipolar magnetised cases, respectively. The left panels show the total light curves which are fainter in the case of NSs. The center and right panels show the same light curves, separated into soft and hard energy bands with redshifts g ≤ 0.9 and g> 0.9, respectively. A dipolar magnetic field configuration leads to noticeable changes in the shapes and amplitudes of these light curves, while a uniform magnetic field configuration has practically no effect on the light curves.

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