[ { "id": "authors:7k07p-t7y65", "collection": "authors", "collection_id": "7k07p-t7y65", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200728-123808771", "type": "book_section", "title": "Equation-of-state constraints and the QCD phase transition in the era of gravitational-wave astronomy", "book_title": "Xiamen-CUSTIPEN Workshop on the Equation of State of Dense Neutron-Rich Matter in the Era of Gravitational Wave Astronomy", "author": [ { "family_name": "Bauswein", "given_name": "Andreas", "orcid": "0000-0001-6798-3572", "clpid": "Bauswein-Andreas" }, { "family_name": "Bastian", "given_name": "Niels-Uwe Friedrich", "clpid": "Bastian-Niels-Uwe-F" }, { "family_name": "Blaschke", "given_name": "David", "orcid": "0000-0002-8399-5183", "clpid": "Blaschke-David-B" }, { "family_name": "Chatziioannou", "given_name": "Katerina", "orcid": "0000-0002-5833-413X", "clpid": "Chatziioannou-K" }, { "family_name": "Clark", "given_name": "James Alexander", "clpid": "Clark-James-Alexander" }, { "family_name": "Fischer", "given_name": "Tobias", "orcid": "0000-0002-3467-0649", "clpid": "Fischer-Tobias-P" }, { "family_name": "Janka", "given_name": "Hans-Thomas", "orcid": "0000-0002-0831-3330", "clpid": "Janka-Hans-Thomas" }, { "family_name": "Just", "given_name": "Oliver", "orcid": "0000-0002-3126-9913", "clpid": "Just-Oliver" }, { "family_name": "Oertel", "given_name": "Micaela", "orcid": "0000-0002-1884-8654", "clpid": "Oertel-Micaela" }, { "family_name": "Stergioulas", "given_name": "Nikolaos", "orcid": "0000-0002-5490-5302", "clpid": "Stergioulas-Nikolaos" } ], "contributor": [ { "family_name": "Li", "given_name": "Ang", "clpid": "Li-Ang" }, { "family_name": "Li", "given_name": "Bao-An", "clpid": "Li-Bao-An" }, { "family_name": "Xu", "given_name": "Furong", "clpid": "Xu-Furong" } ], "abstract": "We describe a multi-messenger interpretation of GW170817, which yields a robust lower limit on NS radii. This excludes NSs with radii smaller than about 10.7\u2005km and thus rules out very soft nuclear matter. We stress the potential of this type of constraints when future detections become available. For instance, a very similar argumentation may yield an upper bound on the maximum mass of nonrotating NSs. We also discuss simulations of NS mergers, which undergo a first-order phase transition to quark matter. We point out a different dynamical behavior. Considering the gravitational-wave signal, we identify an unambiguous signature of the QCD phase transition in NS mergers. We show that the occurrence of quark matter through a strong first-order phase transition during merging leads to a characteristic shift of the dominant postmerger frequency. The frequency shift is indicative for a phase transition if it is compared to the postmerger frequency which is expected for purely hadronic EoS models. A very strong deviation of several 100\u2005Hz is observed for hybrid EoSs in an otherwise tight relation between the tidal deformability and the postmerger frequency. In future events the tidal deformability will be inferred with sufficient precision from the premerger phase, while the dominant postmerger frequency can be obtained when current detectors reach a higher sensitivity in the high-frequency range within the next years. Finally, we address the potential impact of a first-order phase transition on the electromagnetic counter-part of NS mergers. Our simulations suggest that there would be no significant qualitative differences between a system undergoing a phase transition to quark matter and purely hadronic mergers. The quantitative differences are within the spread which is found between different hadronic EoS models. This implies on the one hand that GW170817 is compatible with a possible transition to quark matter. On the other hand these considerations show that it may not be easy to identify quantitative differences between purely hadronic mergers and events in which quark matter occurs considering solely their electromagnetic counterpart or their nucleosynthesis products.", "doi": "10.1063/1.5117803", "isbn": "9780735418691", "publisher": "American Institute of Physics", "place_of_publication": "Melville, NY", "publication_date": "2019-07-17", "pages": "Art. No. 020013" }, { "id": "authors:8tzch-q7x11", "collection": "authors", "collection_id": "8tzch-q7x11", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190211-124222170", "type": "book_section", "title": "Reanalysis of LIGO black-hole coalescences with alternative prior assumptions", "book_title": "Gravitational Wave Astrophysics: Early Results from Gravitational Wave Searches and Electromagnetic Counterparts", "author": [ { "family_name": "Gerosa", "given_name": "Davide", "orcid": "0000-0002-0933-3579", "clpid": "Gerosa-Davide" }, { "family_name": "Vitale", "given_name": "Salvatore", "orcid": "0000-0003-2700-0767", "clpid": "Vitale-Salvatore" }, { "family_name": "Haster", "given_name": "Carl-Johan", "orcid": "0000-0001-8040-9807", "clpid": "Haster-Carl-Johan" }, { "family_name": "Chatziioannou", "given_name": "Katerina", "orcid": "0000-0002-5833-413X", "clpid": "Chatziioannou-K" }, { "family_name": "Zimmerman", "given_name": "Aaron", "orcid": "0000-0002-7453-6372", "clpid": "Zimmerman-Aaron" } ], "contributor": [ { "family_name": "Gonz\u00e1lez", "given_name": "G.", "clpid": "Gonz\u00e1lez-G" }, { "family_name": "Hynes", "given_name": "R.", "clpid": "Hynes-R" } ], "abstract": "We present a critical reanalysis of the black-hole binary coalescences detected during LIGO's first observing run under different Bayesian prior assumptions. We summarize the main findings of Vitale et al. (2017) and show additional marginalized posterior distributions for some of the binaries' intrinsic parameters.\nThese findings were presented at IAU Symposium 338, held on October 16-19, 2017 in Baton Rouge, LA, USA.", "doi": "10.1017/s1743921318003587", "isbn": "9781107192591", "publisher": "Cambridge University Press", "place_of_publication": "Cambridge", "publication_date": "2017-10", "pages": "22-28" } ]