activity
20232026
most citedA potential mass-gap black hole in a wide binary with a circular orbit

33 citations · 71 across the 22 of their papers we have counts for

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Showing astro-ph.HEShow all

7 papers · 1 filter

astro-ph.HE2026

Observational evidence of black hole event horizon from ultra-compact X-ray binaries

Qian-Qi Ma, Wei-Min Gu, Shan-Shan Weng +1

The event horizon is the most crucial feature that distinguishes black hole (BH) from all other objects in the universe. However, since no radiation can escape from the event horiz…

astro-ph.HE2026

A Possible Triple Formation Scenario of Binary Black Hole Merge With One In Pair-instability Supernova Mass Gap

Tian Huang, Xizhen Lu, Guoliang Lü +8

Observations of binary black hole (BBH) mergers detected by LIGO -- such as GW170729, GW190620, GW190706, GW230107, GW230820, and GW230928 -- feature high effective spins and prima…

astro-ph.HE2026

Hunting for Compact Object Binaries from eRASS1 Optical Counterparts through ZTF Time-domain Photometry and Multi-wavelength Surveys

Xin-Yu Fang, Hao-Bin Liu, Wei-Min Gu

Capitalizing on the eRASS1 optical counterpart catalog, we conduct a systematic census of compact object binary (COB) candidates, with a primary focus on X-ray binaries (XRBs), by…

astro-ph.HE2026

The Evolution of Cataclysmic Variables Under Various Magnetic Braking Prescriptions

Wen-Shi Tang, Xiang-Dong Li, Zhe Cui +2

Recent studies revealed discrepancies between observations and the predictions of the standard magnetic braking (MB). Although alternative models have been broadly discussed in neu…

astro-ph.HE2025★ 1 cited

The first extragalactic ultra-compact X-ray binary : a candidate black hole-white dwarf system

Qian-Qi Ma, Jiachang Zhang, Wei-Min Gu +3

M31 UCXB-1 is one of the brightest X-ray point sources in the bulge of M31, with a peak X-ray luminosity $ L_{\mathrm{0.5-10 \: keV}} = 2.9^{+0.2}_{-0.2} \times 10^{38} \: \mathrm{…

astro-ph.HE2025★ 2 cited

Explanation of the Mass Distribution of Binary Black Hole Mergers

Lei Li, Guoliang Lv, Chunhua Zhu +5

Gravitational wave detectors are observing an increasing number of binary black hole (BBH) mergers, revealing a bimodal mass distribution of BBHs, which hints at diverse formation…

astro-ph.HE2025

Searching for Accreting Compact Object Binaries in SRG/eROSITA eRASS1

Hao-Bin Liu, Wei-Min Gu, Yongqi Lu +2

Compact object binaries with accreting white dwarfs, neutron stars, or black holes are crucial for understanding accretion physics. In this study, we identify accreting compact obj…