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Formation of a Possible Black-hole Ultracompact X-ray Binary with the Shortest Orbital Period
Xing-Peng Yang, Kun Xu, Zhi-Fu Gao +2
In the bulge of M31, the Chandra observations discovered a possible black hole (BH) ultracompact X-ray binary (UCXB) Seq.1 with an orbital period of 7.7 minutes and a maximum X-ray…
On the Formation of the Double Neutron Star Binary PSR J1846-0513
Long Jiang, Kun Xu, Shuai Zha +5
The double neutron star PSR J1846-0513 is discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Commensal Radio Astronomy FAST Survey. The pulsar is rev…
Instability in supernova fallback disks and its effect on the formation of ultra long period pulsars
Hao-Ran Yang, Xiang-Dong Li, Shi-Jie Gao +1
Several pulsars with unusually long periods were discovered recently, comprising a potential population of ultra long period pulsars (ULPPs). The origin of their long periodicity i…
On the Interacting/Active Lifetime of Supernova Fallback Disk around Isolated Neutron Stars
Kun Xu, Hao-Ran Yang, Long Jiang +3
The fallback disk model is widely accepted to explain long-period neutron stars (NSs) which can't be simulated by magnetic dipole radiation. However, no confirmed detection of disk…
Evolutionary Origin of Ultra-long Period Radio Transients
Yun-Ning Fan, Kun Xu, Wen-Cong Chen
Recently, it discovered two ultra-long period radio transients GLEAM-X J162759.5-523504.3 (J1627) and GPM J183910 (J1839) with spin periods longer than 1000 s. The origin of the…
On the Formation of Double Neutron Stars in the Milky Way: Influence of Key Parameters
Zhu-Ling Deng, Xiang-Dong Li, Yong Shao +1
The detection of gravitational wave events has stimulated theoretical modeling of the formation and evolution of double compact objects (DCOs). However, even for the most studied i…
Black Hole Ultracompact X-Ray Binaries as Galactic Low-frequency Gravitational Wave Sources: the He Star Channel
Ke Qin, Kun Xu, Dong-Dong Liu +3
Black hole (BH) ultracompact X-ray binaries (UCXBs) are potential Galactic low-frequency gravitational wave (GW) sources. As an alternative channel, BH UCXBs can evolve from BH+He…