X-ray luminosity of an ultracompact transient system with a He disc, for different values of the viscosity parameters αc and αh. Top panel: αc = 0.02 and αh = 0.2; the blue curve shows the case where the inner disc is truncated at a variable radius with time, according to Eq. (7), and the red curve is for a fixed inner radius (2 × 108 cm). The mass-transfer rate is 3 × 1015 g s-1. Intermediate panel: changing αc. Same as above for a truncated disc, with αc = 0.04 (red curve) and αc = 0.01 (blue curve); αh = 0.2 is unchanged. In the case of the blue curve, the mass-transfer rate has been reduced by a factor 3. Bottom panel: changing αh. Same as top panel, with αh = 0.1. αc = 0.02 is unchanged.
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.