Towards analogue black hole merger by Solnyshkov, Dmitry, Septembre, Ismaël, Malpuech, Guillaume

“…For a pair of vortices, we find an analogue of the 3rd Kepler’s law and estimate the emission rate of the gravitational waves. We simulate an analogue of the inspiral phase of a black hole merger. …”
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Sledgehamr: Simulating Scalar Fields with Adaptive Mesh Refinement by Malte Buschmann

“…While the code had been primarily developed to evolve axion string networks, this framework enables various other applications, such as the study of gravitational waves sourced by the dynamics of scalar fields.…”
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Quadrupole formulae with cosmological constant: comparison by Denis Dobkowski-Ryłko, Jerzy Lewandowski

“…Each of the expressions for the radiated energy in the form of gravitational waves is expressed in terms of the mass and pressure quadrupole moments and written explicitly up to the linear order in Λ $$ \sqrt{\Lambda} $$ , or equivalently in Hubble parameter H. …”
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Instability analysis of massive static phantom wormholes via the spectral method by Davide Batic, Denys Dutykh

“…In the case of axial perturbations, the onset of instability occurs at smaller ratios, reflecting the impact of gravitational waves on the wormhole’s stability. The findings suggest that the wormhole remains stable when the throat size significantly exceeds the Schwarzschild radius. …”
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The Quantization of a Kerr-AdS Black Hole by Claus Gerhardt

“…The stationary eigenfunctions can be interpreted as radiation and the temporal ones as gravitational waves. The event horizon corresponds in the quantum model to a Cauchy hypersurface that can be crossed by causal curves in both directions such that the information paradox does not occur. …”
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Parting gravity’s tail: quadrupole tails at fifth order and beyond via integer partitions by Alex Edison

“…The algorithm is employed to compute the tail-of-tail-of-tail-of-tail-of-tail (T5) contributions to the effective action and associated energy loss to gravitational waves. Validation of the new effective action and radiated energy is done through counterterm extraction and renormalization analysis, leading to complete agreement with known counterterms and renormalization flow equations.…”
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The 5D Standing Wave Braneworld with Real Scalar Field by Merab Gogberashvili, Pavle Midodashvili

“…These waves are out of phase; that is, the energy of oscillations passes back and forth between the scalar and gravitational waves. When the amplitude of the standing waves is small, the brane width and the size of the horizon in extra space are of a same order of magnitude, and matter fields are localized in extra dimension due to the presence of the horizon. …”
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Recoiling Black Holes: Electromagnetic Signatures, Candidates, and Astrophysical Implications by S. Komossa

“…This is a prediction of numerical relativity simulations, which imply that the newly formed single SMBH, after binary coalescence in a galaxy merger, can receive kick velocities up to several 1000 km/s due to anisotropic emission of gravitational waves. Long-lived oscillations of the SMBHs in galaxy cores, and in rare cases even SMBH ejections from their host galaxies, are the consequence. …”
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Constraining the equation of state in neutron-star cores via the long-ringdown signal by Christian Ecker, Tyler Gorda, Aleksi Kurkela, Luciano Rezzolla

“…Abstract Multimessenger signals from binary neutron star (BNS) mergers are promising tools to infer the properties of nuclear matter at densities inaccessible to laboratory experiments. Gravitational waves (GWs) from BNS merger remnants can constrain the neutron-star equation of state (EOS) complementing constraints from late inspiral, direct mass-radius measurements, and ab-initio calculations. …”
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T-model Higgs inflation and metastable cosmic strings by C. Pallis

“…The decay of the produced CSs interprets the recent observations from PTA experiments on the stochastic background of gravitational waves with values of the superpotential coupling constants close to 10−6 − 10−8 and symmetry-breaking scales a little lower than the SUSY grand unified theory scale. …”
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Predicting Pulsars from Imbalanced Dataset with Hybrid Resampling Approach by Ernesto Lee, Furqan Rustam, Wajdi Aljedaani, Abid Ishaq, Vaibhav Rupapara, Imran Ashraf

“…Pulsar stars are considered an important cosmic phenomenon, and scientists use them to study nuclear physics, gravitational waves, and collisions between black holes. …”
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Observing Supernova Neutrino Light Curves with Super-Kamiokande. V. Distance Estimation with Neutrinos by Yudai Suwa, Akira Harada, Masamitsu Mori, Ken’ichiro Nakazato, Ryuichiro Akaho, Masayuki Harada, Yusuke Koshio, Fumi Nakanishi, Kohsuke Sumiyoshi, Roger A. Wendell

“…The radius of an NS is determined with an approximate uncertainty of 10% through observations such as X-rays and gravitational waves. By integrating this information, the distance to the supernova can be estimated with an uncertainty of within 15% at a 95% confidence level. …”
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Dual Jet Interaction, Magnetically Arrested Flows, and Flares in Accreting Binary Black Holes by Sean M. Ressler, Luciano Combi, Bart Ripperda, Elias R. Most

“…Supermassive binary black holes in galactic centers are potential multimessenger sources in gravitational waves and electromagnetic radiation. To find such objects, isolating unique electromagnetic signatures of their accretion flow is key. …”
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Multimessenger Probes of Supermassive Black Hole Spin Evolution by Angelo Ricarte, Priyamvada Natarajan, Ramesh Narayan, Daniel C. M. Palumbo

“…We further predict spin distributions accessible via spatially resolved event horizons by the next-generation Event Horizon Telescope and Black Hole Explorer, as well as gravitational waves by the Laser Interferometer Space Antenna (LISA), each of which offers unique and distinct windows into the population of spinning BHs. …”
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MAGICS. II. Seed Black Holes Stripped of Their Surrounding Stars Do Not Sink by Yihao Zhou, Diptajyoti Mukherjee, Nianyi Chen, Tiziana Di Matteo, Peter H. Johansson, Antti Rantala, Christian Partmann, Ugo Niccolò Di Carlo, Simeon Bird, Yueying Ni

“…Massive black hole (MBH) seed mergers are expected to be among the loudest sources of gravitational waves detected by the Laser Interferometer Space Antenna, providing a unique window into the birth and early growth of MBHs. …”
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The stability of anisotropic compact stars influenced by dark matter under teleparallel gravity: an extended gravitational deformation approach by Sneha Pradhan, Piyali Bhar, Sanjay Mandal, P. K. Sahoo, Kazuharu Bamba

“…Notably, our findings are consistent with the observation of gravitational waves from the first binary merger event. …”
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PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary by Jay Strader, Paul S. Ray, Ryan Urquhart, Samuel J. Swihart, Laura Chomiuk, Elias Aydi, Eric C. Bellm, Kristen C. Dage, Megan E. DeCesar, Julia S. Deneva, Maura A. McLaughlin, Isabella Molina, Teresa Panurach, Kirill V. Sokolovsky

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Morphology of 137 Fast Radio Bursts Down to Microsecond Timescales from the First CHIME/FRB Baseband Catalog by Ketan R. Sand, Alice P. Curtin, Daniele Michilli, Victoria M. Kaspi, Emmanuel Fonseca, Kenzie Nimmo, Ziggy Pleunis, Kaitlyn Shin, Mohit Bhardwaj, Charanjot Brar, Matt Dobbs, Gwendolyn M. Eadie, B.M. Gaensler, Ronniy C. Joseph, Calvin Leung, Robert Main, Kiyoshi W. Masui, Ryan Mckinven, Ayush Pandhi, Aaron B. Pearlman, Masoud Rafiei-Ravandi, Mawson W. Sammons, Kendrick Smith, Ingrid H. Stairs

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