3 papers
astro-ph.HE2026
The long-term accretion luminosity of V4641 Sgr through binary evolution simulations: implications for its ultrahigh-energy gamma-ray emission
Ruo-Yu Liu, Yong Shao, Yu-Dong Nie
Recent observations by LHAASO and HAWC have revealed extended ultrahigh-energy (UHE; TeV) gamma-ray emission associated with the black-hole X-ray binary (BHXRB) V4641 Sgr,…
astro-ph.SR2026
A Rare Population of Intermediate-mass Helium Stars Between Hot Subdwarfs and Wolf-Rayet Stars
Gui-Yu Wang, Yong Shao, Jian-Guo He +3
Helium stars stripped of their hydrogen envelopes represent pivotal phases in binary evolution, yet their origins, particularly within the intermediate-mass range of $2-8\, M_{\odo…
astro-ph.SR2025
A Be star-black hole binary with a wide orbit from LAMOST time-domain survey
Qian-Yu An, Yang Huang, Wei-Min Gu +21
Binary systems consisting of an early type star and a black hole (BH) are crucial for understanding various astrophysical phenomena, particularly the origins of detected gravitatio…