Image Details
Caption: Figure 1.
Orbit of the neutron star (solid green line) around its massive stellar companion (in blue) as seen from Earth. The values of orbital separation (a), orbital inclination (i), eccentricity (e), longitude of periastron (Ω), and periastron angle (ω) are given in the lower right corner (Jenke et al. 2012). Black dots along the orbit mark orbital phases, while the red solid line is the main axis of the orbit. The phases for NuSTAR (magenta line) and NICER observations (brown crosses) are plotted.
© 2023. The Author(s). Published by the American Astronomical Society.