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Fast material ejected dynamically over $<10$ ms during the merger of a binary neutron-star (BNS) system can give rise to distinctive electromagnetic counterparts to the system's gravitational-wave emission that can serve as a "smoking gun"…

High Energy Astrophysical Phenomena · Physics 2023-03-23 Luciano Combi , Daniel M. Siegel

Binary white dwarf (WD) coalescences driven by gravitational waves or collisions in triple systems are potential progenitors of Type Ia supernovae (SNe Ia). We combine the distribution of 56Ni inferred from observations of SNe Ia with the…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Anthony L. Piro , Todd A. Thompson , Christopher S. Kochanek

We use the ASTRID cosmological simulation to forecast massive black hole (MBH) mergers detectable by Laser Interferometer Space Antenna (LISA) down to $z=0$. ASTRID directly models MBH dynamical friction, allowing a realistic tracking of…

Astrophysics of Galaxies · Physics 2025-11-11 Bonny Y. Wang , Yihao Zhou , William Chen , Nianyi Chen , Tiziana Di Matteo , Rupert Croft , Simeon Bird , Yueying Ni

The existence of a mass gap of $3-5\,M_{\odot}$ between the heaviest neutron stars (NSs) and the lightest black holes (BHs), inferred from the BH mass distribution in low mass X-ray binaries (LMXBs), has been suggested for decades. The…

Future searches for gravitational waves from space will be sensitive to double compact objects (DCOs) in our Milky Way. We present new simulations of the populations of double black holes (BHBHs), black hole neutron stars (BHNSs) and double…

High Energy Astrophysical Phenomena · Physics 2022-10-12 Tom Wagg , Floor S. Broekgaarden , Selma E. de Mink , Lieke A. C. van Son , Neige Frankel , Stephen Justham

Using Yunnan evolutionary population synthesis (EPS) models, we present integrated colours, integrated spectral energy distributions (ISEDs) and absorption-line indices defined by the Lick Observatory image dissector scanner (Lick/IDS)…

Solar and Stellar Astrophysics · Physics 2010-06-24 F. Zhang , Z. Han , L. Li

The first generation of stars, Population III (Pop III), is believed to be massive, with some potentially having masses in the range 140 M$_\odot$ to 270 M$_\odot$ and capable of exploding as a pair-instability supernova (PISN). Such events…

Astrophysics of Galaxies · Physics 2026-05-13 Aron Kordt , Simon C. O. Glover , Ralf S. Klessen

Prior to the detection of black holes (BHs) via the gravitational waves (GWs) they generate at merger, the presence of BHs was inferred in X-ray binaries, mostly via dynamical measurements, with masses in the range between $\sim…

High Energy Astrophysical Phenomena · Physics 2019-06-12 Rosalba Perna , Yi-Han Wang , Will M. Farr , Nathan Leigh , Matteo Cantiello

Near-solar metallicity (and low-redshift) Pair-Instability Supernova (PISN) candidates challenge stellar evolution models. Indeed, at such a metallicity, even an initially very massive star generally loses so much mass by stellar winds that…

Solar and Stellar Astrophysics · Physics 2017-03-01 Cyril Georgy , Georges Meynet , Sylvia Ekström , Gregg A. Wade , Véronique Petit , Zsolt Keszthelyi , Raphael Hirschi

Next-generation detectors are expected to be sensitive to postmerger signals from binary neutron star coalescences and thus to directly probe the remnant dynamics. We investigate the scientific potential of postmerger detections with the…

General Relativity and Quantum Cosmology · Physics 2022-05-23 Matteo Breschi , Rossella Gamba , Ssohrab Borhanian , Gregorio Carullo , Sebastiano Bernuzzi

Stellar evolution predicts the existence of a mass gap for black hole remnants produced by pair-instability supernova dynamics, whose lower and upper edges are very uncertain. We study the possibility of constraining the location of the…

High Energy Astrophysical Phenomena · Physics 2024-01-25 Gabriele Franciolini , Konstantinos Kritos , Luca Reali , Floor Broekgaarden , Emanuele Berti

We analyze the properties of VIRGO detector with the aim of studying its ability to search for coalescing black hole binaries. We focus on the remnants of the Population III stars, which currently should be massive black holes ($\sim…

Astrophysics · Physics 2009-11-11 K. Kulczycki , T. Bulik , K. Belczynski , B. Rudak

Galactic white dwarf binaries (WDBs) and black hole binaries (BHBs) will be gravitational wave (GW) sources for LISA. Their detection will provide insights into binary evolution and the evolution of our Galaxy through cosmic history. Here,…

Astrophysics of Galaxies · Physics 2024-10-24 Petra Tang , Jan Eldridge , Renate Meyer , Astrid Lamberts , Guillaume Boileau , Wouter van Zeist

We present simulated observations to assess the ability of LSST and the WFD survey to detect and characterize kilonovae - the optical emission associated with binary neutron star (and possibly black hole - neutron star) mergers. We expand…

High Energy Astrophysical Phenomena · Physics 2019-04-03 P. S. Cowperthwaite , V. A. Villar , D. M. Scolnic , E. Berger

Astrometric satellite Gaia is expected to observe non-interacting black hole (BH) binaries with luminous companions (LCs) (hereafter BH-LC binaries), a different population from BH X-ray binaries previously discovered. The detectability of…

High Energy Astrophysical Phenomena · Physics 2022-03-30 Minori Shikauchi , Ataru Tanikawa , Norita Kawanaka

We present a Bayesian parameter-estimation pipeline to measure the properties of inspiralling stellar-mass black hole binaries with LISA. Our strategy (i) is based on the coherent analysis of the three noise-orthogonal LISA data streams,…

High Energy Astrophysical Phenomena · Physics 2021-11-23 Riccardo Buscicchio , Antoine Klein , Elinore Roebber , Christopher J. Moore , Davide Gerosa , Eliot Finch , Alberto Vecchio

Identification and characterisation of Kilonovae (KNe) can be instrumental in improving our understanding of cosmology and astrophysics. However, their detection poses unique challenges due to rarity and faintness. Upcoming telescopes, with…

High Energy Astrophysical Phenomena · Physics 2026-04-20 Anindya Ganguly , Anupreeta More

We estimate the expected signal-to-noise ratios (SNRs) from the three phases (inspiral,merger,ringdown) of coalescing binary black holes (BBHs) for initial and advanced ground-based interferometers (LIGO/VIRGO) and for space-based…

General Relativity and Quantum Cosmology · Physics 2009-12-30 Eanna E. Flanagan , Scott A. Hughes

The observations of gravitational wave (GW) provide us a new probe to study the universe. GW events can be used as standard sirens if their redshifts are measured. Normally, stardard sirens can be divided into bright/dark sirens according…

High Energy Astrophysical Phenomena · Physics 2024-01-24 Jiming Yu , Zhengyan Liu , Xiaohu Yang , Yu Wang , Pengjie Zhang , Xin Zhang , Wen Zhao
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