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Nuclear star clusters surrounding supermassive black holes (SMBHs) in galactic nuclei contain large numbers of stars, black holes (BHs) and neutron stars (NSs), a fraction of which are likely to form binaries. These binaries were suggested…

星系天体物理 · 物理学 2019-06-19 Giacomo Fragione , Evgeni Grishin , Nathan W. C. Leigh , Hagai. B. Perets , Rosalba Perna

The multi-wavelength non-thermal emission from the binary neutron star (BNS) merger GW170817 has raised a heated debate concerning the post-merger outflow structure. Both a relativistic structured jet viewed off-axis and a mildly…

高能天体物理现象 · 物理学 2018-12-17 Yiyang Wu , Andrew MacFadyen

Context: Mergers of neutron stars (NS) and black holes (BH) are among the strongest sources of gravitational waves and are potential central engines for short gamma-ray bursts. Aims: We aim to compare the general relativistic (GR) results…

高能天体物理现象 · 物理学 2015-03-13 M. Ruffert , H. -Th. Janka

The short GRB 170817A associated to the first detection of gravitation waves from a Binary Neutron Star (BNS) merger was in many ways unusual. Possible explanations are emission from a cocoon or cocoon break out, off-axis view of a…

高能天体物理现象 · 物理学 2018-06-22 Houri Ziaeepour

We consider the explosion of supernovae and the possible production of a variety of high energy transients by delayed black hole formation in massive stars endowed with rotation. Following the launch of a ``successful'' shock by the usual…

天体物理学 · 物理学 2011-02-11 A. I. MacFadyen , S. E. Woosley , A. Heger

Long-duration gamma-ray bursts (GRBs) are generally related to the core-collapse of massive stars. In the collapsar scenario, a rotating stellar-mass black hole (BH) surrounded by a hyperaccretion disk has been considered as one of the…

高能天体物理现象 · 物理学 2021-03-10 Mei Du , Shuang-Xi Yi , Tong Liu , Cui-Ying Song , Wei Xie

Fast radio bursts (FRBs) at cosmological distances still hold concealed physical origins. Previously Liu (2018) proposes a scenario that the collision between a neutron star (NS) and a white dwarf (WD) can be one of the progenitors of…

高能天体物理现象 · 物理学 2020-02-24 Xiang Liu

White dwarf-neutron star binaries generate detectable gravitational radiation. We construct Newtonian equilibrium models of corotational white dwarf-neutron star (WDNS) binaries in circular orbit and find that these models terminate at the…

高能天体物理现象 · 物理学 2010-04-22 Vasileios Paschalidis , Morgan MacLeod , Thomas W. Baumgarte , Stuart L. Shapiro

Neutron star mergers are among the most promising sources of gravitational waves for advanced ground-based detectors. These mergers are also expected to power bright electromagnetic signals, in the form of short gamma-ray bursts,…

The production rate of compact objects, i.e. neutron stars (NS) and black holes (BH), in active galactic nuclei (AGN) and quasars (QSO), where the frequent supernova explosion is used to explain the high metallicity, is very high due to the…

天体物理学 · 物理学 2009-10-31 K. S. Cheng , Jian-Min Wang

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…

高能天体物理现象 · 物理学 2018-10-31 Zhi-Qiu Huang , Liang-Duan Liu , Xiang-Yu Wang , Zi-Gao Dai

We study kilonova emission from binary neutron star (BNS) mergers for the case that a remnant massive neutron star (MNS) forms and collapses to a black hole within $20$ ms after the onset of the merger (which we refer to as "a short-lived…

高能天体物理现象 · 物理学 2023-06-13 Kyohei Kawaguchi , Sho Fujibayashi , Nanae Domoto , Kenta Kiuchi , Masaru Shibata , Shinya Wanajo

Massive neutron star (NS) with lifetimes of at least several seconds are expected to be the result of a sizable fraction of NS mergers. We study their formation using a large set of numerical relativity simulations. We show that they are…

高能天体物理现象 · 物理学 2018-09-26 David Radice , Albino Perego , Sebastiano Bernuzzi , Bing Zhang

Supermassive black hole binaries (SMBHBs) are natural by-products of galaxy mergers and are expected to be powerful multi-messenger sources. They can be powered by the accretion of matter and then radiate across the electromagnetic…

高能天体物理现象 · 物理学 2024-06-26 E. M. Gutiérrez , L. Combi , G. E. Romero , M. Campanelli

The binary-driven hypernova (BdHN) model explains long gamma-ray bursts (GRBs) associated with supernovae (SNe) Ic through physical episodes that occur in a binary composed of a carbon-oxygen (CO) star and a neutron star (NS) companion in…

高能天体物理现象 · 物理学 2023-07-20 L. M. Becerra , C. Fryer , J. F. Rodriguez , J. A. Rueda , R. Ruffini

Long-duration gamma-ray bursts (LGRBs) associated with supernovae (SNe) are possibly born out of the death of a massive star. After the star collapses, a stellar-mass black hole (BH) is formed, surrounded by a hyperaccretion disk with…

高能天体物理现象 · 物理学 2019-02-27 Cui-Ying Song , Tong Liu

We investigate the nucleosynthesis and kilonova properties of binary neutron-star (NS) merger models which lead to intermediate remnant lifetimes of ~0.1-1seconds until black-hole (BH) formation and describe all components of material…

We outline the possible physical processes, associated timescales, and energetics that could lead to the production of pulsars, jets, asymmetric supernovae, and weak gamma-ray bursts in routine circumstances and to a magnetar and perhaps…

天体物理学 · 物理学 2011-04-04 J. Craig Wheeler , Insu Yi , Peter Hoeflich , Lifan Wang

Here we collect three unique bursts, GRBs\,060614, 211211A and 211227A, all characterized by a long-duration main emission (ME) phase and a rebrightening extended emission (EE) phase, to study their observed properties and the potential…

高能天体物理现象 · 物理学 2022-09-07 Jin-Ping Zhu , Xiangyu Ivy Wang , Hui Sun , Yuan-Pei Yang , Zhuo Li , Rui-Chong Hu , Ying Qin , Shichao Wu

The first combined detection of gravitational waves and electromagnetic signals from a binary neutron star (BNS) merger in August 2017 (event named GW170817) represents a major landmark for the ongoing investigation on these extraordinary…

高能天体物理现象 · 物理学 2020-05-07 Riccardo Ciolfi