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In the coalescence events of binary neutron star (NS) or a black hole (BH) and an NS, a BH hyperaccretion disk might be eventually formed. At very high mass accretion rates, MeV neutrinos will be emitted from this disk, which is called a…

High Energy Astrophysical Phenomena · Physics 2022-12-28 Bing-Guang Chen , Tong Liu , Yan-Qing Qi , Bao-Quan Huang , Yun-Feng Wei , Tuan Yi , Wei-Min Gu , Li Xue

Fallback in core-collapse supernovae (CCSNe) plays an important role in determining the properties of the central compact remnants, which might produce a black hole (BH) hyperaccretion system in the centre of a massive CCSN. When the…

High Energy Astrophysical Phenomena · Physics 2021-08-10 Yun-Feng Wei , Tong Liu , Li Xue

The search for multi-messenger signals of binary black hole (BBH) mergers is crucial to understanding the merger process of BBH and the relative astrophysical environment. Considering BBH mergers occurring in the active galactic nuclei…

High Energy Astrophysical Phenomena · Physics 2023-11-07 Zi-Hang Zhou , Kai Wang

Neutrino-dominated accretion flows (NDAFs) around rotating stellar-mass black holes (BHs) have been theorized as the central engine of relativistic jets launched in massive star core collapse events or compact star mergers. In this work, we…

High Energy Astrophysical Phenomena · Physics 2016-06-29 Tong Liu , Bing Zhang , Ye Li , Ren-Yi Ma , Li Xue

Merging of stellar-mass binary black holes (BBH) could take place within the accretion disk of active galactic nuclei (AGN). The resulting BH remnant is likely to accrete the disk gas at a super-Eddington rate, launching a fast,…

High Energy Astrophysical Phenomena · Physics 2024-03-15 Zhi-Peng Ma , Kai Wang

As the plausible central engine of gamma-ray bursts (GRBs), a black hole (BH) hyperaccretion disk should be in a state of neutrino-dominated accretion flow (NDAF) if the accretion rate is larger than the ignition rate of an NDAF. A rotating…

High Energy Astrophysical Phenomena · Physics 2019-08-07 Yun-Feng Wei , Tong Liu , Cui-Ying Song

We investigate mass ejection from accretion disks formed in mergers of black holes (BHs) and neutron stars (NSs). The third observing run of the LIGO/Virgo interferometers provided BH-NS candidate events that yielded no electromagnetic (EM)…

High Energy Astrophysical Phenomena · Physics 2020-07-30 Rodrigo Fernández , Francois Foucart , Jonas Lippuner

Gamma-ray bursts (GRBs) might be powered by a black hole (BH) hyperaccretion systems via the Blandford-Znajek (BZ) mechanism or neutrino annihilation from neutrino-dominated accretion flows (NDAFs). Magnetic coupling (MC) between the inner…

High Energy Astrophysical Phenomena · Physics 2020-04-15 Cui-Ying Song , Tong Liu , Yun-Feng Wei

As progenitors of gamma-ray bursts (GRBs), core collapse of massive stars and coalescence of compact object binaries are believed to be powerful sources of gravitational waves (GWs). In the collapsar scenario, a rotating stellar-mass black…

High Energy Astrophysical Phenomena · Physics 2020-02-12 Yun-Feng Wei , Tong Liu

A population of binary stellar-mass black hole (BBH) mergers are believed to occur embedded in the accretion disk of active galactic nuclei (AGNs). In this {\em Letter}, we demonstrate that the jets from these BBH mergers can propagate…

High Energy Astrophysical Phenomena · Physics 2023-11-21 Jin-Ping Zhu

The ongoing LIGO-Virgo-KAGRA observing run O4 provides an opportunity to discover new multi-messenger events, including binary neutron star (BNS) mergers such as GW170817, and the highly anticipated first detection of a multi-messenger…

The gravitational wave event GW170817 associated with the short gamma-ray burst (GRB) 170817A confirms that binary neutron star (BNS) mergers are one of the origins of short GRBs. The associated kilonova emission, radioactively powered by…

High Energy Astrophysical Phenomena · Physics 2018-10-31 Zhi-Qiu Huang , Liang-Duan Liu , Xiang-Yu Wang , Zi-Gao Dai

The detections of some long gamma-ray bursts (LGRBs) relevant to mergers of neutron star (NS)-NS or black hole (BH)-NS, as well as some short gamma-ray bursts (SGRBs) probably produced by collapsars, muddle the boundary of two categories of…

High Energy Astrophysical Phenomena · Physics 2018-04-17 Cui-Ying Song , Tong Liu , Ang Li

The existence of merging black hole-neutron star (BHNS) binaries has been ascertained through the observation of their gravitational wave (GW) signals. However, to date, no definitive electromagnetic (EM) emission has been confidently…

Binary black holes (BBHs) in the vicinity of Active Galactic Nuclei (AGNs) are particularly interesting systems from both a cosmological and astrophysical point of view. Matter and radiation fields within the dense AGN environment could…

High Energy Astrophysical Phenomena · Physics 2025-10-27 Leonardo Ricca , Matthias Vereecken , Christoph Raab , Mathieu Lamoureux , Giacomo Bruno , Gwenhaël De Wasseige

Recently, advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO) has detected black hole (BH) merger events, most of which are sourced by BHs more massive than $30~M_\odot$. Especially, the observation of GW170104 suggests…

Astrophysics of Galaxies · Physics 2018-04-11 Hiromichi Tagawa , Masayuki Umemura

We present a semi-analytic model for predicting kilonova light curves from the mergers of neutron stars with black holes (NSBH). The model is integrated into the MOSFiT platform, and can generate light curves from input binary properties…

High Energy Astrophysical Phenomena · Physics 2023-10-02 B. P. Gompertz , M. Nicholl , J. C. Smith , S. Harisankar , G. Pratten , P. Schmidt , G. P. Smith

Neutron stars (NSs) are extraordinary not only because they are the densest form of matter in the visible Universe but also because they can generate B-fields ten orders of magnitude larger than those currently constructed on Earth. The…

High Energy Astrophysical Phenomena · Physics 2021-04-09 Milton Ruiz , Stuart L. Shapiro , Antonios Tsokaros

In the new era of gravitational wave (GW) and multi-messenger astrophysics, the detection of a GW signal from the coalescence of a black hole - neutron star (BHNS) binary remains a highly anticipated discovery. This kind of system is…

High Energy Astrophysical Phenomena · Physics 2019-06-05 C. Barbieri , O. S. Salafia , A. Perego , M. Colpi , G. Ghirlanda

The detection of the gravitational wave event GW230529, presumably a neutron star-black hole (NSBH) merger, by the LIGO-Virgo-KAGRA (LVK) Collaboration marks an exciting discovery for multimessenger astronomy. The black hole (BH) has a high…

High Energy Astrophysical Phenomena · Physics 2025-10-14 Keerthi Kunnumkai , Antonella Palmese , Mattia Bulla , Tim Dietrich , Amanda M. Farah , Peter T. H. Pang
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