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Gravitational waves open the possibility to investigate the nature of compact objects and probe the horizons of black holes. Some models of modified gravity predict the presence of horizonless and singularity-free compact objects. Such dark…

广义相对论与量子宇宙学 · 物理学 2023-10-12 Elisa Maggio

This paper is to introduce a new software called CBwaves which provides a fast and accurate computational tool to determine the gravitational waveforms yielded by generic spinning binaries of neutron stars and/or black holes on eccentric…

广义相对论与量子宇宙学 · 物理学 2013-02-13 Péter Csizmadia , Gergely Debreczeni , István Rácz , Mátyás Vasúth

GW170817 was the first ever joint detection of gravitational waves (GW) from a binary neutron star (BNS) merger with the detections of short $\gamma$-ray burst (SGRB) counterparts. Analysis of the multi-band afterglow observations of over…

高能天体物理现象 · 物理学 2020-01-31 M. Saleem

We discuss the different signals, in gravitational and electromagnetic waves, emitted during the merger of two compact stars. We will focus in particular on the possible contraints that those signals can provide on the equation of state of…

高能天体物理现象 · 物理学 2018-02-08 Alessandro Drago , Giuseppe Pagliara , Sergei B. Popov , Silvia Traversi , Grzegorz Wiktorowicz

A number of works have shown that important information on the equation of state of matter at nuclear density can be extracted from the gravitational waves emitted by merging neutron-star binaries. We present a comprehensive analysis of the…

广义相对论与量子宇宙学 · 物理学 2016-06-29 Luciano Rezzolla , Kentaro Takami

We discuss gravitational waves from merging binaries using a Newtonian approach with some inputs from the Post-Newtonian formalism. We show that it is possible to understand the key features of the signal using fundamental physics and also…

科普物理 · 物理学 2019-12-20 Jahanvi , Ashish Kumar Meena , J. S. Bagla

On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was observed independently by the Fermi Gamma-ray Burst Monitor, and the…

高能天体物理现象 · 物理学 2017-11-03 LIGO Scientific Collaboration , Virgo Collaboration , Fermi Gamma-Ray Burst Monitor , INTEGRAL

Mergers of white dwarf binaries are a possible progenitor channel for Type Ia supernovae. While white dwarfs are abundant in the universe and relatively well understood, their gravitational wave signals have not yet been directly observed.…

广义相对论与量子宇宙学 · 物理学 2025-10-24 Giona Sala , Chiara Brandenstein , Sebastian Baum , Peter W. Graham

The kilo-Hertz gravitational waves radiated by the neutron star merger remnants carry rich information about the physics of high-density nuclear matter states, and many important astrophysical phenomena such as gamma-ray bursts and black…

广义相对论与量子宇宙学 · 物理学 2022-11-08 Chuming Wang , Chunnong Zhao , Xiang Li , Enping Zhou , Haixing Miao , Yanbei Chen , Yiqiu Ma

We investigate a novel approach to measuring the Hubble constant using gravitational-wave (GW) signals from compact binaries by exploiting the narrowness of the distribution of masses of the underlying neutron-star population.…

广义相对论与量子宇宙学 · 物理学 2012-01-31 Stephen R. Taylor , Jonathan R. Gair , Ilya Mandel

Gravitational wave-forms from coalescences of binary black hole systems and binary neutron star systems with low tidal effects can hardly be distinguished if the two systems have similar masses. In the absence of discriminating power based…

广义相对论与量子宇宙学 · 物理学 2022-04-13 J. -F. Coupechoux , A. Arbey , R. Chierici , H. Hansen , J. Margueron , V. Sordini

Combined gravitational-wave (GW) and electromagnetic (EM) observations of compact binary mergers should enable detailed studies of astrophysical processes in the strong-field gravity regime. Networks of GW interferometers have poor angular…

高能天体物理现象 · 物理学 2015-06-11 Samaya Nissanke , Mansi Kasliwal , Alexandra Georgieva

The millihertz gravitational wave band is expected to be opened by space-borne detectors like TianQin. Various mechanisms can produce short outbursts of gravitational waves, whose actual waveform can be hard to model. In order to identify…

广义相对论与量子宇宙学 · 物理学 2024-05-15 Zheng Wu , Hui-Min Fan , Yi-Ming Hu , Ik Siong Heng

Stellar collapse and the subsequent development of a core-collapse supernova explosion emit bursts of gravitational waves (GWs) that might be detected by the advanced generation of laser interferometer gravitational-wave observatories such…

广义相对论与量子宇宙学 · 物理学 2015-06-04 J. Logue , C. D. Ott , I. S. Heng , P. Kalmus , J. Scargill

We demonstrate by a large set of merger simulations for symmetric binary neutron stars (NSs) that there is a tight correlation between the frequency peak of the postmerger gravitational-wave (GW) emission and the physical properties of the…

太阳与恒星天体物理 · 物理学 2015-05-28 A. Bauswein , H. -Th. Janka

Gravitational wave (GW) astronomy truly began with the detection of merging compact binaries. The next breakthrough lies in detecting GWs from core-collapse supernovae (CCSNe), particularly the GW linear memory -- a phenomenon arising from…

高能天体物理现象 · 物理学 2024-12-11 Kiranjyot Gill

In dense stellar regions, highly eccentric binaries of black holes and neutron stars can form through various n-body interactions. Such a binary could emit a significant fraction of its binding energy in a sequence of largely isolated…

广义相对论与量子宇宙学 · 物理学 2014-11-19 Kai Sheng Tai , Sean T. McWilliams , Frans Pretorius

Our knowledge and understanding of the Universe is mainly based on observations of the electromagnetic radiation in a wide range of wavelengths. Only during the past two decades, new kinds of detectors have been developed, exploiting other…

高能天体物理现象 · 物理学 2019-06-11 Maurizio Spurio

The detection of gravitational waves from the merger of binary black holes by the LIGO Collaboration has opened a new window to astrophysics. With the sensitivities of ground based detectors in the coming years we can only detect the local…

高能天体物理现象 · 物理学 2017-06-28 Ilias Cholis

Compact binary mergers are the strongest candidates for the progenitors of Short Gamma Ray Bursts (SGRBs). If a gravitational wave (GW) signal from the compact binary merger is observed in association with a SGRB, such a synergy can help us…

高能天体物理现象 · 物理学 2014-12-16 K. G. Arun , Hideyuki Tagoshi , Chandra Kant Mishra , Archana Pai