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We introduce deep learning time-series forecasting for gravitational wave detection of binary neutron star mergers. This method enables the identification of these signals in real advanced LIGO data up to 30 seconds before merger. When…

广义相对论与量子宇宙学 · 物理学 2021-03-09 Wei Wei , E. A. Huerta

Gravitational-wave echoes in the post-merger signal of a binary coalescence are predicted in various scenarios, including near-horizon quantum structures, exotic states of matter in ultracompact stars, and certain deviations from general…

广义相对论与量子宇宙学 · 物理学 2019-10-10 Elisa Maggio , Adriano Testa , Swetha Bhagwat , Paolo Pani

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

The next generation of ground-based gravitational-wave detectors, Einstein Telescope (ET) and Cosmic Explorer (CE), present a unique opportunity to put constraints on dense matter, among many other groundbreaking scientific goals. In a…

Two neutron stars merge somewhere in the Universe approximately every 10 seconds, creating violent explosions observable in gravitational waves and across the electromagnetic spectrum. The transformative coincident gravitational-wave and…

高能天体物理现象 · 物理学 2022-02-21 Nikhil Sarin , Paul D. Lasky

We show how gravitational-wave observations with advanced detectors of tens to several tens of neutron-star binaries can measure the neutron-star radius with an accuracy of several to a few percent, for mass and spatial distributions that…

广义相对论与量子宇宙学 · 物理学 2018-01-24 Sukanta Bose , Kabir Chakravarti , Luciano Rezzolla , B. S. Sathyaprakash , Kentaro Takami

The ejecta from binary neutron star mergers, which powers its associated kilonova, can inform us about source properties, merger dynamics, and the dense nuclear matter equation of state. While now in the era of multi-messenger astronomy, we…

高能天体物理现象 · 物理学 2025-04-08 Amelia Henkel , Francois Foucart , Selah Melfor , Samaya Nissanke , Alexandra Wernersson , Uddipta Bhardwaj

We present a novel universal relation for binary neutron star mergers with long-lived neutron star remnants: inspired by recent work based on numerical relativity simulations, we propose a novel approach using perturbative calculations that…

广义相对论与量子宇宙学 · 物理学 2021-07-14 Praveen Manoharan , Christian J. Krüger , Kostas D. Kokkotas

The coalescence of binary neutron stars (BNS) is a prolific source of gravitational waves (GWs) and electromagnetic (EM) radiation, offering a dual observational window into the Universe. Lowering the signal-to-noise ratio (S/N) threshold…

高能天体物理现象 · 物理学 2024-10-01 Yun-Fei Du , Emre Seyit Yorgancioglu , Jin-Hui Rao , Ankit Kumar , Shu-Xu Yi , Shuang-Nan Zhang , Shu Zhang

The observations of optical and near-infrared counterparts of binary neutron star mergers not only enrich our knowledge about the abundance of heavy elements in the Universe, or help reveal the remnant object just after the merger as…

高能天体物理现象 · 物理学 2023-02-09 Zhenyu Zhu , Ang Li , Tong Liu

We study the detectability of gravitational-wave signals from sub-solar mass binary neutron star systems by the current generation of ground-based gravitational-wave detectors. We find that finite size effects from large tidal…

Gravitational Waves (GWs) from coalescing binaries carry crucial information about their component sources, like mass, spin and tidal effects. This implies that the analysis of GW signals from binary neutron star mergers can offer unique…

高能天体物理现象 · 物理学 2024-01-17 Shriya Soma , Horst Stöcker , Kai Zhou

We present, for the first time, recoil velocity estimates for binary neutron star mergers using data from numerical relativity simulations. We find that binary neutron star merger remnants can have recoil velocity of the order of a few tens…

高能天体物理现象 · 物理学 2024-01-18 Sumeet Kulkarni , Surendra Padamata , Anuradha Gupta , David Radice , Rahul Kashyap

The gravitational-wave signal from the merger of two neutron stars cannot be easily differentiated from the signal produced by a comparable-mass mixed binary of a neutron star and a black hole. Indeed, both binary types can account for the…

高能天体物理现象 · 物理学 2020-04-24 Hsin-Yu Chen , Katerina Chatziioannou

The postmerger gravitational-wave (GW) signal of a binary neutron star (BNS) merger is expected to contain valuable information that could shed light on the equation of state (EOS) of NSs, the properties of the matter produced during the…

高能天体物理现象 · 物理学 2022-05-04 Aditya Vijaykumar , Shasvath J. Kapadia , Parameswaran Ajith

Motivated by the recent discovery of the binary neutron-star (BNS) merger GW170817, we determine the optimal observational setup for detecting and characterizing radio counterparts of nearby ($d_L\sim40$\,Mpc) BNS mergers. We simulate…

高能天体物理现象 · 物理学 2018-11-28 Dario Carbone , Alessandra Corsi

Compact binary mergers are prime sources of gravitational waves, targeted by current and next generation detectors. The question "what is the observable electromagnetic (EM) signature of a compact binary merger?" is an intriguing one with…

高能天体物理现象 · 物理学 2015-06-04 T. Piran , E. Nakar , S. Rosswog

Gravitational waves from the merger of two neutron stars cannot be easily distinguished from those produced by a comparable-mass mixed binary in which one of the companions is a black hole. Low-mass black holes are interesting because they…

The gravitational wave emission from the merging binary neutron star system GW170817 arrived full of tidal information which can be used to probe the fundamental ultra-dense nuclear physics residing in these stars. In previous work, we used…

广义相对论与量子宇宙学 · 物理学 2020-09-23 Zack Carson , Andrew W. Steiner , Kent Yagi

Black hole-neutron star (BHNS) binaries are amongst promising candidates for the joint detection of electromagnetic (EM) signals with gravitational waves (GWs) and are expected to be detected in the near future. Here we study the effect of…

高能天体物理现象 · 物理学 2021-12-22 Mukul Bhattacharya , Pawan Kumar , George Smoot