MERGERS OF CHARGED BLACK HOLES: GRAVITATIONAL-WAVE EVENTS, SHORT GAMMA-RAY BURSTS, AND FAST RADIO BURSTS

By Bing Zhang. 2016

169 citations recorded by the source corpus.

The discoveries of GW150914, GW151226, and LVT151012 suggest that double black hole (BH–BH) mergers are common in the universe. If at least one of the two merging black holes (BHs) carries a certain amount of charge, possibly retained by a rotating magnetosphere, the inspiral of a BH–BH system would drive a global magnetic dipole normal to the orbital plane. The rapidly evolving magnetic moment during the merging process would drive a Poynting flux with an increasing wind power. The magnetospheric activities during the final phase of the merger would make a fast radio burst (FRB) if the BH charge can be as large as a factor of q ˆ ∼ ( 10 − 9 – 10 − 8 ) of the critical charge Qc of the BH. At large radii, dissipation of the Poynting flux energy in the outflow would power a short-duration high-energy transient, which would appear as a detectable short-duration gamma-ray burst (GRB) if the charge can be as large as q ˆ ∼ ( 10 − 5 – 10 − 4 ) . The putative short GRB coincident with GW150914 recorded by Fermi GBM may be interpreted with this model. Future joint GW/GRB/FRB searches would lead to a measurement or place a constraint on the charges carried by isolate BHs.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/b34045a450e872bbef872d8b332cbf9c0935f26c

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In Astronomy and Astrophysics

1. Bing Zhang
2. Xuefeng Wu
3. Z. Dai
4. J. Racusin
5. Fa-yin Wang
6. Jie-Shuang Wang
7. Yuanpei Yang
8. C. Wilson-Hodge

Citations in the corpus

• FERMI GBM OBSERVATIONS OF LIGO GRAVITATIONAL-WAVE EVENT GW150914 (2016, background): “…such events (Morsony et al. 2016; Yamazaki et al. 2016), a possible mechanism to extract high-energy emission from stellar mass black hole mergers (Zhang 2016), unusual environments for the black hole merger that may lead to sufficient surrounding material to fuel the production of the GRB (Loeb…”
• FAST RADIO BURSTS FROM THE INSPIRAL OF DOUBLE NEUTRON STARS (2016, methodology): “Our model is clearly different from the short GRB/FRB association scenario proposed by Zhang (2016a), who suggested that the inspiral of a charged BH-BH binary forms an electric circuit and produces an induced magnetic field.”
• A “Cosmic Comb” Model of Fast Radio Bursts (2017, background): “…star - black hole (NS-BH), or black hole - black hole (BH-BH) merger would suggest a direct connection between the FRB and the merger (Totani 2013; Zhang 2016a; Wang et al. 2016)3; and an FRB coincident with the disappearance of an extended plateau emission would suggest the ejection of a…”