↩ 🔵 🔵 🔵 ❪✺_ₛₛ❫ High-Energy Astrophysics Subsets ○ ❪◑❫ X-Ray Binaries ○ ❪◑❫ High-Mass X-Ray Binaries (HMXB) ○ MAXI J1820+070 ❍ Swift J1753.5-0127 ❍