Living Reviews in Relativity最新文献

{"title":"Recent developments in mathematical aspects of relativistic fluids","authors":"Marcelo Disconzi","doi":"10.1007/s41114-024-00052-x","DOIUrl":"10.1007/s41114-024-00052-x","url":null,"abstract":"<div><p>We review some recent developments in mathematical aspects of relativistic fluids. The goal is to provide a quick entry point to some research topics of current interest that is accessible to graduate students and researchers from adjacent fields, as well as to researches working on broader aspects of relativistic fluid dynamics interested in its mathematical formalism. Instead of complete proofs, which can be found in the published literature, here we focus on the proofs’ main ideas and key concepts. After an introduction to the relativistic Euler equations, we cover the following topics: a new wave-transport formulation of the relativistic Euler equations tailored to applications; the problem of shock formation for relativistic Euler; rough (i.e., low-regularity) solutions to the relativistic Euler equations; the relativistic Euler equations with a physical vacuum boundary; relativistic fluids with viscosity. We finish with a discussion of open problems and future directions of research.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"27 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-024-00052-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gravity experiments with radio pulsars","authors":"Paulo C. C. Freire,&nbsp;Norbert Wex","doi":"10.1007/s41114-024-00051-y","DOIUrl":"10.1007/s41114-024-00051-y","url":null,"abstract":"<div><p>The discovery of the first pulsar in a binary star system, the Hulse–Taylor pulsar, 50 years ago opened up an entirely new field of experimental gravity. For the first time it was possible to investigate strong-field and radiative aspects of the gravitational interaction. Continued observations of the Hulse–Taylor pulsar eventually led, among other confirmations of the predictions of general relativity (GR), to the first evidence for the reality of gravitational waves. In the meantime, many more radio pulsars have been discovered that are suitable for testing GR and its alternatives. One particularly remarkable binary system is the Double Pulsar, which has far surpassed the Hulse–Taylor pulsar in several respects. In addition, binary pulsar-white dwarf systems have been shown to be particularly suitable for testing alternative gravitational theories, as they often predict strong dipolar gravitational radiation for such asymmetric systems. A rather unique pulsar laboratory is the pulsar in a hierarchical stellar triple, that led to by far the most precise confirmation of the strong-field version of the universality of free fall. Using radio pulsars, it could be shown that additional aspects of the Strong Equivalence Principle apply to the dynamics of strongly self-gravitating bodies, like the local position and local Lorentz invariance of the gravitational interaction. So far, GR has passed all pulsar tests with flying colours, while at the same time many alternative gravity theories have either been strongly constrained or even falsified. New telescopes, instrumentation, timing and search algorithms promise a significant improvement of the existing tests and the discovery of (qualitatively) new, more relativistic binary systems.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"27 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-024-00051-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141736913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Post-Newtonian theory for gravitational waves","authors":"Luc Blanchet","doi":"10.1007/s41114-024-00050-z","DOIUrl":"10.1007/s41114-024-00050-z","url":null,"abstract":"<div><p>To be observed and analyzed by the network of current gravitational-wave detectors (LIGO, Virgo, KAGRA), and in anticipation of future third generation ground-based (Einstein Telescope, Cosmic Explorer) and space-borne (LISA) detectors, inspiralling compact binaries—binary star systems composed of neutron stars and/or black holes in their late stage of evolution prior the final coalescence—require high-accuracy predictions from general relativity. The orbital dynamics and emitted gravitational waves of these very relativistic systems can be accurately modelled using state-of-the-art post-Newtonian theory. In this article we review the multipolar-post-Minkowskian approximation scheme, merged to the standard post-Newtonian expansion into a single formalism valid for general isolated matter system. This cocktail of approximation methods (called MPM-PN) has been successfully applied to compact binary systems, producing equations of motion up to the fourth-post-Newtonian (4PN) level, and gravitational waveform and flux to 4.5PN order beyond the Einstein quadrupole formula. We describe the dimensional regularization at work in such high post-Newtonian calculations, for curing both ultra-violet and infra-red divergences. Several landmark results are detailed: the definition of multipole moments, the gravitational radiation reaction, the conservative dynamics of circular orbits, the first law of compact binary mechanics, and the non-linear effects in the gravitational-wave propagation (tails, iterated tails and non-linear memory). We also discuss the case of compact binaries moving on eccentric orbits, and the effects of spins (both spin-orbit and spin–spin) on the equations of motion and gravitational-wave energy flux and waveform.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"27 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-024-00050-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical and experimental constraints for the equation of state of dense and hot matter","authors":"Rajesh Kumar,&nbsp;Veronica Dexheimer,&nbsp;Johannes Jahan,&nbsp;Jorge Noronha,&nbsp;Jacquelyn Noronha-Hostler,&nbsp;Claudia Ratti,&nbsp;Nico Yunes,&nbsp;Angel Rodrigo Nava Acuna,&nbsp;Mark Alford,&nbsp;Mahmudul Hasan Anik,&nbsp;Debarati Chatterjee,&nbsp;Katerina Chatziioannou,&nbsp;Hsin-Yu Chen,&nbsp;Alexander Clevinger,&nbsp;Carlos Conde,&nbsp;Nikolas Cruz-Camacho,&nbsp;Travis Dore,&nbsp;Christian Drischler,&nbsp;Hannah Elfner,&nbsp;Reed Essick,&nbsp;David Friedenberg,&nbsp;Suprovo Ghosh,&nbsp;Joaquin Grefa,&nbsp;Roland Haas,&nbsp;Alexander Haber,&nbsp;Jan Hammelmann,&nbsp;Steven Harris,&nbsp;Carl-Johan Haster,&nbsp;Tetsuo Hatsuda,&nbsp;Mauricio Hippert,&nbsp;Renan Hirayama,&nbsp;Jeremy W. Holt,&nbsp;Micheal Kahangirwe,&nbsp;Jamie Karthein,&nbsp;Toru Kojo,&nbsp;Philippe Landry,&nbsp;Zidu Lin,&nbsp;Matthew Luzum,&nbsp;Timothy Andrew Manning,&nbsp;Jordi Salinas San Martin,&nbsp;Cole Miller,&nbsp;Elias Roland Most,&nbsp;Debora Mroczek,&nbsp;Azwinndini Muronga,&nbsp;Nicolas Patino,&nbsp;Jeffrey Peterson,&nbsp;Christopher Plumberg,&nbsp;Damien Price,&nbsp;Constanca Providencia,&nbsp;Romulo Rougemont,&nbsp;Satyajit Roy,&nbsp;Hitansh Shah,&nbsp;Stuart Shapiro,&nbsp;Andrew W. Steiner,&nbsp;Michael Strickland,&nbsp;Hung Tan,&nbsp;Hajime Togashi,&nbsp;Israel Portillo Vazquez,&nbsp;Pengsheng Wen,&nbsp;Ziyuan Zhang,&nbsp;MUSES Collaboration","doi":"10.1007/s41114-024-00049-6","DOIUrl":"10.1007/s41114-024-00049-6","url":null,"abstract":"<div><p>This review aims at providing an extensive discussion of modern constraints relevant for dense and hot strongly interacting matter. It includes theoretical first-principle results from lattice and perturbative QCD, as well as chiral effective field theory results. From the experimental side, it includes heavy-ion collision and low-energy nuclear physics results, as well as observations from neutron stars and their mergers. The validity of different constraints, concerning specific conditions and ranges of applicability, is also provided.\u0000</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"27 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-024-00049-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141251682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hamiltonian formulation of general relativity and post-Newtonian dynamics of compact binaries","authors":"Gerhard Schäfer,&nbsp;Piotr Jaranowski","doi":"10.1007/s41114-024-00048-7","DOIUrl":"10.1007/s41114-024-00048-7","url":null,"abstract":"<div><p>Hamiltonian formalisms provide powerful tools for the computation of approximate analytic solutions of the Einstein field equations. The post-Newtonian computations of the explicit analytic dynamics and motion of compact binaries are discussed within the most often applied Arnowitt–Deser–Misner formalism. The obtention of autonomous Hamiltonians is achieved by the transition to Routhians. Order reduction of higher derivative Hamiltonians results in standard Hamiltonians. Tetrad representation of general relativity is introduced for the tackling of compact binaries with spinning components. Compact objects are modeled by use of Dirac delta functions and their derivatives. Consistency is achieved through transition to <i>d</i>-dimensional space and application of dimensional regularization. At the fourth post-Newtonian level, tail contributions to the binding energy show up for the first time. The conservative dynamics of binary systems finds explicit presentation and discussion through the fifth post-Newtonian order for spinless masses. For masses with spin Hamiltonians are known through (next-to)<span>(^3)</span>-leading-order spin-orbit and spin-spin couplings as well as through next-to-leading order cubic and quartic in spin interactions. Parts of those are given explicitly. Tidal-interaction Hamiltonians are considered through (next-to)<span>(^2)</span>-leading post-Newtonian order. The radiation reaction dynamics is presented explicitly through the third-and-half post-Newtonian order for spinless objects, and, for spinning bodies, to leading-order in the spin-orbit and spin1-spin2 couplings. The most important historical issues get pointed out.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"27 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-024-00048-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140845974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Testing theories of gravity with planetary ephemerides","authors":"Agnès Fienga,&nbsp;Olivier Minazzoli","doi":"10.1007/s41114-023-00047-0","DOIUrl":"10.1007/s41114-023-00047-0","url":null,"abstract":"<div><p>We describe here how planetary ephemerides are built in the framework of General Relativity and how they can be used to test alternative theories. We focus on the definition of the reference frame (space and time) in which the planetary ephemeris is described, the equations of motion that govern the orbits of solar system bodies and electromagnetic waves. After a review on the existing planetary and lunar ephemerides, we summarize the results obtained considering full modifications of the ephemeris framework with direct comparisons with the observations of planetary systems, with a specific attention for the PPN formalism. We then discuss other formalisms such as Einstein-dilaton theories, the massless graviton and MOND. The paper finally concludes on some comments and recommendations regarding misinterpreted measurements of the advance of perihelia.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"27 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-023-00047-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139574072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cosmology with the Laser Interferometer Space Antenna","authors":"Pierre Auclair,&nbsp;David Bacon,&nbsp;Tessa Baker,&nbsp;Tiago Barreiro,&nbsp;Nicola Bartolo,&nbsp;Enis Belgacem,&nbsp;Nicola Bellomo,&nbsp;Ido Ben-Dayan,&nbsp;Daniele Bertacca,&nbsp;Marc Besancon,&nbsp;Jose J. Blanco-Pillado,&nbsp;Diego Blas,&nbsp;Guillaume Boileau,&nbsp;Gianluca Calcagni,&nbsp;Robert Caldwell,&nbsp;Chiara Caprini,&nbsp;Carmelita Carbone,&nbsp;Chia-Feng Chang,&nbsp;Hsin-Yu Chen,&nbsp;Nelson Christensen,&nbsp;Sebastien Clesse,&nbsp;Denis Comelli,&nbsp;Giuseppe Congedo,&nbsp;Carlo Contaldi,&nbsp;Marco Crisostomi,&nbsp;Djuna Croon,&nbsp;Yanou Cui,&nbsp;Giulia Cusin,&nbsp;Daniel Cutting,&nbsp;Charles Dalang,&nbsp;Valerio De Luca,&nbsp;Walter Del Pozzo,&nbsp;Vincent Desjacques,&nbsp;Emanuela Dimastrogiovanni,&nbsp;Glauber C. Dorsch,&nbsp;Jose Maria Ezquiaga,&nbsp;Matteo Fasiello,&nbsp;Daniel G. Figueroa,&nbsp;Raphael Flauger,&nbsp;Gabriele Franciolini,&nbsp;Noemi Frusciante,&nbsp;Jacopo Fumagalli,&nbsp;Juan García-Bellido,&nbsp;Oliver Gould,&nbsp;Daniel Holz,&nbsp;Laura Iacconi,&nbsp;Rajeev Kumar Jain,&nbsp;Alexander C. Jenkins,&nbsp;Ryusuke Jinno,&nbsp;Cristian Joana,&nbsp;Nikolaos Karnesis,&nbsp;Thomas Konstandin,&nbsp;Kazuya Koyama,&nbsp;Jonathan Kozaczuk,&nbsp;Sachiko Kuroyanagi,&nbsp;Danny Laghi,&nbsp;Marek Lewicki,&nbsp;Lucas Lombriser,&nbsp;Eric Madge,&nbsp;Michele Maggiore,&nbsp;Ameek Malhotra,&nbsp;Michele Mancarella,&nbsp;Vuk Mandic,&nbsp;Alberto Mangiagli,&nbsp;Sabino Matarrese,&nbsp;Anupam Mazumdar,&nbsp;Suvodip Mukherjee,&nbsp;Ilia Musco,&nbsp;Germano Nardini,&nbsp;Jose Miguel No,&nbsp;Theodoros Papanikolaou,&nbsp;Marco Peloso,&nbsp;Mauro Pieroni,&nbsp;Luigi Pilo,&nbsp;Alvise Raccanelli,&nbsp;Sébastien Renaux-Petel,&nbsp;Arianna I. Renzini,&nbsp;Angelo Ricciardone,&nbsp;Antonio Riotto,&nbsp;Joseph D. Romano,&nbsp;Rocco Rollo,&nbsp;Alberto Roper Pol,&nbsp;Ester Ruiz Morales,&nbsp;Mairi Sakellariadou,&nbsp;Ippocratis D. Saltas,&nbsp;Marco Scalisi,&nbsp;Kai Schmitz,&nbsp;Pedro Schwaller,&nbsp;Olga Sergijenko,&nbsp;Geraldine Servant,&nbsp;Peera Simakachorn,&nbsp;Lorenzo Sorbo,&nbsp;Lara Sousa,&nbsp;Lorenzo Speri,&nbsp;Danièle A. Steer,&nbsp;Nicola Tamanini,&nbsp;Gianmassimo Tasinato,&nbsp;Jesús Torrado,&nbsp;Caner Unal,&nbsp;Vincent Vennin,&nbsp;Daniele Vernieri,&nbsp;Filippo Vernizzi,&nbsp;Marta Volonteri,&nbsp;Jeremy M. Wachter,&nbsp;David Wands,&nbsp;Lukas T. Witkowski,&nbsp;Miguel Zumalacárregui,&nbsp;James Annis,&nbsp;Fëanor Reuben Ares,&nbsp;Pedro P. Avelino,&nbsp;Anastasios Avgoustidis,&nbsp;Enrico Barausse,&nbsp;Alexander Bonilla,&nbsp;Camille Bonvin,&nbsp;Pasquale Bosso,&nbsp;Matteo Calabrese,&nbsp;Mesut Çalışkan,&nbsp;Jose A. R. Cembranos,&nbsp;Mikael Chala,&nbsp;David Chernoff,&nbsp;Katy Clough,&nbsp;Alexander Criswell,&nbsp;Saurya Das,&nbsp;Antonio da Silva,&nbsp;Pratika Dayal,&nbsp;Valerie Domcke,&nbsp;Ruth Durrer,&nbsp;Richard Easther,&nbsp;Stephanie Escoffier,&nbsp;Sandrine Ferrans,&nbsp;Chris Fryer,&nbsp;Jonathan Gair,&nbsp;Chris Gordon,&nbsp;Martin Hendry,&nbsp;Mark Hindmarsh,&nbsp;Deanna C. Hooper,&nbsp;Eric Kajfasz,&nbsp;Joachim Kopp,&nbsp;Savvas M. Koushiappas,&nbsp;Utkarsh Kumar,&nbsp;Martin Kunz,&nbsp;Macarena Lagos,&nbsp;Marc Lilley,&nbsp;Joanes Lizarraga,&nbsp;Francisco S. N. Lobo,&nbsp;Azadeh Maleknejad,&nbsp;C. J. A. P. Martins,&nbsp;P. Daniel Meerburg,&nbsp;Renate Meyer,&nbsp;José Pedro Mimoso,&nbsp;Savvas Nesseris,&nbsp;Nelson Nunes,&nbsp;Vasilis Oikonomou,&nbsp;Giorgio Orlando,&nbsp;Ogan Özsoy,&nbsp;Fabio Pacucci,&nbsp;Antonella Palmese,&nbsp;Antoine Petiteau,&nbsp;Lucas Pinol,&nbsp;Simon Portegies Zwart,&nbsp;Geraint Pratten,&nbsp;Tomislav Prokopec,&nbsp;John Quenby,&nbsp;Saeed Rastgoo,&nbsp;Diederik Roest,&nbsp;Kari Rummukainen,&nbsp;Carlo Schimd,&nbsp;Aurélia Secroun,&nbsp;Alberto Sesana,&nbsp;Carlos F. Sopuerta,&nbsp;Ismael Tereno,&nbsp;Andrew Tolley,&nbsp;Jon Urrestilla,&nbsp;Elias C. Vagenas,&nbsp;Jorinde van de Vis,&nbsp;Rien van de Weygaert,&nbsp;Barry Wardell,&nbsp;David J. Weir,&nbsp;Graham White,&nbsp;Bogumiła Świeżewska,&nbsp;Valery I. Zhdanov,&nbsp;The LISA Cosmology Working Group","doi":"10.1007/s41114-023-00045-2","DOIUrl":"10.1007/s41114-023-00045-2","url":null,"abstract":"<div><p>The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and particle physics, from the MeV to the Planck scale. However, the range of potential cosmological applications of gravitational-wave observations extends well beyond these two objectives. This publication presents a summary of the state of the art in LISA cosmology, theory and methods, and identifies new opportunities to use gravitational-wave observations by LISA to probe the universe.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"26 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-023-00045-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71517139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solvable models of quantum black holes: a review on Jackiw–Teitelboim gravity","authors":"Thomas G. Mertens,&nbsp;Gustavo J. Turiaci","doi":"10.1007/s41114-023-00046-1","DOIUrl":"10.1007/s41114-023-00046-1","url":null,"abstract":"<div><p>We review recent developments in Jackiw–Teitelboim gravity. This is a simple solvable model of quantum gravity in two dimensions (that arises e.g. from the s-wave sector of higher dimensional gravity systems with spherical symmetry). Due to its solvability, it has proven to be a fruitful toy model to analyze important questions such as the relation between black holes and chaos, the role of wormholes in black hole physics and holography, and the way in which information that falls into a black hole can be recovered.\u0000</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"26 1","pages":""},"PeriodicalIF":26.3,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10390458/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9987114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Searches for continuous-wave gravitational radiation","authors":"Keith Riles","doi":"10.1007/s41114-023-00044-3","DOIUrl":"10.1007/s41114-023-00044-3","url":null,"abstract":"<div><p>Now that detection of gravitational-wave signals from the coalescence of extra-galactic compact binary star mergers has become nearly routine, it is intriguing to consider other potential gravitational-wave signatures. Here we examine the prospects for discovery of continuous gravitational waves from fast-spinning neutron stars in our own galaxy and from more exotic sources. Potential continuous-wave sources are reviewed, search methodologies and results presented and prospects for imminent discovery discussed.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"26 1","pages":""},"PeriodicalIF":40.6,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-023-00044-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4670063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Astrophysics with the Laser Interferometer Space Antenna","authors":"Pau Amaro-Seoane,&nbsp;Jeff Andrews,&nbsp;Manuel Arca Sedda,&nbsp;Abbas Askar,&nbsp;Quentin Baghi,&nbsp;Razvan Balasov,&nbsp;Imre Bartos,&nbsp;Simone S. Bavera,&nbsp;Jillian Bellovary,&nbsp;Christopher P. L. Berry,&nbsp;Emanuele Berti,&nbsp;Stefano Bianchi,&nbsp;Laura Blecha,&nbsp;Stéphane Blondin,&nbsp;Tamara Bogdanović,&nbsp;Samuel Boissier,&nbsp;Matteo Bonetti,&nbsp;Silvia Bonoli,&nbsp;Elisa Bortolas,&nbsp;Katelyn Breivik,&nbsp;Pedro R. Capelo,&nbsp;Laurentiu Caramete,&nbsp;Federico Cattorini,&nbsp;Maria Charisi,&nbsp;Sylvain Chaty,&nbsp;Xian Chen,&nbsp;Martyna Chruślińska,&nbsp;Alvin J. K. Chua,&nbsp;Ross Church,&nbsp;Monica Colpi,&nbsp;Daniel D’Orazio,&nbsp;Camilla Danielski,&nbsp;Melvyn B. Davies,&nbsp;Pratika Dayal,&nbsp;Alessandra De Rosa,&nbsp;Andrea Derdzinski,&nbsp;Kyriakos Destounis,&nbsp;Massimo Dotti,&nbsp;Ioana Duţan,&nbsp;Irina Dvorkin,&nbsp;Gaia Fabj,&nbsp;Thierry Foglizzo,&nbsp;Saavik Ford,&nbsp;Jean-Baptiste Fouvry,&nbsp;Alessia Franchini,&nbsp;Tassos Fragos,&nbsp;Chris Fryer,&nbsp;Massimo Gaspari,&nbsp;Davide Gerosa,&nbsp;Luca Graziani,&nbsp;Paul Groot,&nbsp;Melanie Habouzit,&nbsp;Daryl Haggard,&nbsp;Zoltan Haiman,&nbsp;Wen-Biao Han,&nbsp;Alina Istrate,&nbsp;Peter H. Johansson,&nbsp;Fazeel Mahmood Khan,&nbsp;Tomas Kimpson,&nbsp;Kostas Kokkotas,&nbsp;Albert Kong,&nbsp;Valeriya Korol,&nbsp;Kyle Kremer,&nbsp;Thomas Kupfer,&nbsp;Astrid Lamberts,&nbsp;Shane Larson,&nbsp;Mike Lau,&nbsp;Dongliang Liu,&nbsp;Nicole Lloyd-Ronning,&nbsp;Giuseppe Lodato,&nbsp;Alessandro Lupi,&nbsp;Chung-Pei Ma,&nbsp;Tomas Maccarone,&nbsp;Ilya Mandel,&nbsp;Alberto Mangiagli,&nbsp;Michela Mapelli,&nbsp;Stéphane Mathis,&nbsp;Lucio Mayer,&nbsp;Sean McGee,&nbsp;Berry McKernan,&nbsp;M. Coleman Miller,&nbsp;David F. Mota,&nbsp;Matthew Mumpower,&nbsp;Syeda S. Nasim,&nbsp;Gijs Nelemans,&nbsp;Scott Noble,&nbsp;Fabio Pacucci,&nbsp;Francesca Panessa,&nbsp;Vasileios Paschalidis,&nbsp;Hugo Pfister,&nbsp;Delphine Porquet,&nbsp;John Quenby,&nbsp;Angelo Ricarte,&nbsp;Friedrich K. Röpke,&nbsp;John Regan,&nbsp;Stephan Rosswog,&nbsp;Ashley Ruiter,&nbsp;Milton Ruiz,&nbsp;Jessie Runnoe,&nbsp;Raffaella Schneider,&nbsp;Jeremy Schnittman,&nbsp;Amy Secunda,&nbsp;Alberto Sesana,&nbsp;Naoki Seto,&nbsp;Lijing Shao,&nbsp;Stuart Shapiro,&nbsp;Carlos Sopuerta,&nbsp;Nicholas C. Stone,&nbsp;Arthur Suvorov,&nbsp;Nicola Tamanini,&nbsp;Tomas Tamfal,&nbsp;Thomas Tauris,&nbsp;Karel Temmink,&nbsp;John Tomsick,&nbsp;Silvia Toonen,&nbsp;Alejandro Torres-Orjuela,&nbsp;Martina Toscani,&nbsp;Antonios Tsokaros,&nbsp;Caner Unal,&nbsp;Verónica Vázquez-Aceves,&nbsp;Rosa Valiante,&nbsp;Maurice van Putten,&nbsp;Jan van Roestel,&nbsp;Christian Vignali,&nbsp;Marta Volonteri,&nbsp;Kinwah Wu,&nbsp;Ziri Younsi,&nbsp;Shenghua Yu,&nbsp;Silvia Zane,&nbsp;Lorenz Zwick,&nbsp;Fabio Antonini,&nbsp;Vishal Baibhav,&nbsp;Enrico Barausse,&nbsp;Alexander Bonilla Rivera,&nbsp;Marica Branchesi,&nbsp;Graziella Branduardi-Raymont,&nbsp;Kevin Burdge,&nbsp;Srija Chakraborty,&nbsp;Jorge Cuadra,&nbsp;Kristen Dage,&nbsp;Benjamin Davis,&nbsp;Selma E. de Mink,&nbsp;Roberto Decarli,&nbsp;Daniela Doneva,&nbsp;Stephanie Escoffier,&nbsp;Poshak Gandhi,&nbsp;Francesco Haardt,&nbsp;Carlos O. Lousto,&nbsp;Samaya Nissanke,&nbsp;Jason Nordhaus,&nbsp;Richard O’Shaughnessy,&nbsp;Simon Portegies Zwart,&nbsp;Adam Pound,&nbsp;Fabian Schussler,&nbsp;Olga Sergijenko,&nbsp;Alessandro Spallicci,&nbsp;Daniele Vernieri,&nbsp;Alejandro Vigna-Gómez","doi":"10.1007/s41114-022-00041-y","DOIUrl":"10.1007/s41114-022-00041-y","url":null,"abstract":"<div><p>The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely novel way. The synergy with ground-based and space-born instruments in the electromagnetic domain, by enabling multi-messenger observations, will add further to the discovery potential of LISA. The next decade is crucial to prepare the astrophysical community for LISA’s first observations. This review outlines the extensive landscape of astrophysical theory, numerical simulations, and astronomical observations that are instrumental for modeling and interpreting the upcoming LISA datastream. To this aim, the current knowledge in three main source classes for LISA is reviewed; ultra-compact stellar-mass binaries, massive black hole binaries, and extreme or interme-diate mass ratio inspirals. The relevant astrophysical processes and the established modeling techniques are summarized. Likewise, open issues and gaps in our understanding of these sources are highlighted, along with an indication of how LISA could help making progress in the different areas. New research avenues that LISA itself, or its joint exploitation with upcoming studies in the electromagnetic domain, will enable, are also illustrated. Improvements in modeling and analysis approaches, such as the combination of numerical simulations and modern data science techniques, are discussed. This review is intended to be a starting point for using LISA as a new discovery tool for understanding our Universe.</p></div>","PeriodicalId":686,"journal":{"name":"Living Reviews in Relativity","volume":"26 1","pages":""},"PeriodicalIF":40.6,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41114-022-00041-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4582461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}