Mass-radius constraints for the sources from the hard state PRE bursts. Constraints are shown by 68% (dotted line) and 95% (solid line) confidence level contours. The upper-left region is excluded by constraints from the causality and general relativistic requirements (Haensel et al. 2007; Lattimer & Prakash 2007).
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.