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The behaviour of the nuclear symmetry energy near saturation density is important for our understanding of dense nuclear matter. This density dependence can be parameterised by the nuclear symmetry energy and its derivatives evaluated at…

高能天体物理现象 · 物理学 2021-04-07 Duncan Neill , William G. Newton , David Tsang

Much effort is devoted to measuring the nuclear symmetry energy through neutron star (NS) and nuclear observables. Since matter in the NS core may be non-hadronic, observables like radii and tidal deformability may not provide reliable…

高能天体物理现象 · 物理学 2023-03-29 Duncan Neill , Rebecca Preston , William G. Newton , David Tsang

It is proposed that one-off fast radio burst (FRB) with periodic structures may be produced during the inspiral phase of a binary neutron-star (BNS) merger. In this paper, we study the event rate of such kind of FRB. We first investigate…

高能天体物理现象 · 物理学 2023-08-16 Zhi-Lin Chen , Rui-Chong Hu , Da-Bin Lin , En-Wei Liang

Fast radio bursts (FRBs) at cosmological distances have recently been discovered, whose duration is about milliseconds. We argue that the observed short duration is difficult to explain by giant flares of soft gamma-ray repeaters, though…

高能天体物理现象 · 物理学 2015-06-16 Tomonori Totani

With current and planned gravitational-wave (GW) observing runs, coincident multimessenger timing of Resonant Shattering Flares (RSFs) and GWs may soon allow for neutron star (NS) asteroseismology to be used to constrain the nuclear…

高能天体物理现象 · 物理学 2024-03-07 Duncan Neill , David Tsang , William G. Newton

The resonant excitation of neutron star (NS) modes by tides is investigated as a source of short gamma-ray burst (sGRB) precursors. We find that the driving of a crust-core interface mode can lead to shattering of the NS crust, liberating…

高能天体物理现象 · 物理学 2015-05-30 David Tsang , Jocelyn S. Read , Tanja Hinderer , Anthony L. Piro , Ruxandra Bondarescu

Recent observations of repeating fast radio bursts (FRBs) suggest that some FRBs reside in an environment consistent with that of binary neutron star (BNS) mergers. The bursting rate for repeaters could be very high and the emission site is…

高能天体物理现象 · 物理学 2020-02-25 Bing Zhang

Using numerical relativity simulations with a subgrid dynamo prescription to generate strong initial magnetic fields, we investigate the possibility of launching a jet-like outflow from the hypermassive neutron star (HMNS) during the early…

高能天体物理现象 · 物理学 2023-04-21 Elias R. Most , Eliot Quataert

Binary neutron star (BNS) mergers are one of the proposed origins for both repeating and non-repeating fast radio bursts (FRBs), which associates FRBs with gravitational waves and short gamma-ray bursts (GRBs). In this work, we explore…

高能天体物理现象 · 物理学 2020-08-18 Haoxiang Lin , Tomonori Totani

Long-lived massive magnetars are expected to be remnants of some binary neutron star (BNS) mergers. In this paper, we argue that the magnetic powered flaring activities of these merged magnetars would occur dominantly in their early…

高能天体物理现象 · 物理学 2023-08-14 Shu-Xu Yi , Zhen Zhang , Xilu Wang

Fast radio bursts (FRBs) are a newly discovered class of radio transients that emerge from cosmological sources and last for $\sim$ a few milliseconds. However, their origin remains a highly debated topic in astronomy. Among the plethora of…

高能天体物理现象 · 物理学 2023-10-31 Mohit Bhardwaj , Antonella Palmese , Ignacio Magaña Hernandez , Virginia D'Emilio , Soichiro Morisaki

Fast radio bursts (FRBs) are usually suggested to be associated with mergers of compact binaries consisting of white dwarfs (WDs), neutron stars (NSs), or black holes (BHs). We test these models by fitting the observational distributions in…

高能天体物理现象 · 物理学 2018-05-23 Xiao-Feng Cao , Yun-Wei Yu , Xia Zhou

With the rapid advancements in next-generation ground-based gravitational wave (GW) detectors, it is anticipated that $10^3$-$10^5$ binary neutron star (BNS) mergers per year will be detected, with a significant fraction accompanied by…

高能天体物理现象 · 物理学 2025-12-04 Zhiwei Chen , Youjun Lu , Hao Ma , Qingbo Chu

Neutron star mergers can form a hypermassive neutron star (HMNS) remnant, which may be the engine of a short gamma ray burst (SGRB) before it collapses to a black hole, possibly several hundred milliseconds after the merger. During the…

高能天体物理现象 · 物理学 2019-10-16 Cecilia Chirenti , M. Coleman Miller , Tod Strohmayer , Jordan Camp

Fast radio bursts (FRBs) are mysterious bright millisecond-duration radio bursts at cosmological distances. While young magnetars have been put forward as the leading source candidate, recent observations suggest there may be multiple FRB…

高能天体物理现象 · 物理学 2022-12-02 Alexandra Moroianu , Linqing Wen , Clancy W. James , Shunke Ai , Manoj Kovalam , Fiona Panther , Bing Zhang

Recent observations of giant flares from soft gamma-ray repeaters have exhibited multiple 25-150 Hz oscillations. Frequencies in this range are expected for toroidal shear waves in a neutron star (NS) crust, lending support to Duncan's…

天体物理学 · 物理学 2009-11-13 Anthony L. Piro

Short gamma-ray bursts are believed to be produced by both binary neutron star (BNS) and neutron star-black hole (NSBH) mergers. We use current estimates for the BNS and NSBH merger rates to calculate the fraction of observable short…

Recent observations of short gamma-ray bursts (SGRBs) suggest that binary neutron star (NS) mergers can create highly magnetised, millisecond NSs. Sharp cut-offs in X-ray afterglow plateaus of some SGRBs hint at the gravitational collapse…

高能天体物理现象 · 物理学 2014-04-11 Vikram Ravi , Paul D. Lasky

Black hole-neutron star (BHNS) binaries are expected to be among the leading sources of gravitational waves observable by ground-based detectors, and may be the progenitors of short-hard gamma ray bursts (SGRBs) as well. Here, we discuss…

We demonstrate that resonant shattering flares can occur during close passages of neutron stars in eccentric or hyperbolic encounters. We provide updated estimates for the rate of close encounters of compact objects in dense stellar…

高能天体物理现象 · 物理学 2015-06-16 David Tsang
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