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dc.contributor.author
Ayriyan, Alexander
dc.contributor.author
Blaschke, David
dc.contributor.author
Grunfeld, Ana Gabriela
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dc.contributor.author
Alvarez Castillo, D. E.
dc.contributor.author
Grigorian, H.
dc.contributor.author
Abgaryan, V.
dc.date.available
2022-04-19T15:17:46Z
dc.date.issued
2021-11-29
dc.identifier.citation
Ayriyan, Alexander; Blaschke, David; Grunfeld, Ana Gabriela; Alvarez Castillo, D. E.; Grigorian, H.; et al.; Bayesian analysis of multimessenger M-R data with interpolated hybrid EoS; Springer; European Physical Journal A: Hadrons and Nuclei; 57; 318; 29-11-2021; 1-18
dc.identifier.issn
1434-6001
dc.identifier.uri
http://hdl.handle.net/11336/155304
dc.description.abstract
We introduce a family of equations of state (EoS)for hybrid neutron star (NS) matter that is obtained by atwo-zone parabolic interpolation between a soft hadronicEoS at low densities and a set of stiff quark matter EoSat high densities within a finite region of chemical potentialsμH < μ < μQ. Fixing the hadronic EoS as the APRone and choosing the color-superconducting, nonlocal NJLmodel with two free parameters for the quark phase, we performBayesian analyses with this two-parameter family ofhybrid EoS. Using three different sets of observational constraintsthat include the mass of PSR J0740+6620, the tidaldeformability for GW170817, and the mass-radius relationfor PSR J0030+0451 from NICER as obligatory (set 1), whileset 2 uses the possible upper limit on themaximummass fromGW170817 as an additional constraint and set 3 instead ofthe possibility that the lighter object in the asymmetric binarymerger GW190814 is a neutron star. We confirm that in anycase, the quark matter phase has to be color superconductingwith the dimensionless diquark coupling approximately fulfillingthe Fierz relation ηD = 0.75 and the most probablesolutions exhibiting a proportionality between ηD and ηV , thecoupling of the repulsive vector interaction that is requiredfor a sufficiently largemaximummass.We used theBayesiananalysis to investigate with the method of fictitious measureaments the consequences of anticipating different radii for themassive 2 M PSR J0740+6220 for the most likely equationof state. With the actual outcome of the NICER radius measurementon PSR J0740+6220 we could conclude that for themost likely hybrid star EoS would not support a maximummass as large as 2.5 M so that the event GW190814 was abinary black hole merger.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
MODELOS EFECTIVOS QUIRALES
dc.subject
ESTRELLAS COMPACTAS
dc.subject.classification
Física de Partículas y Campos
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Bayesian analysis of multimessenger M-R data with interpolated hybrid EoS
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-04-07T22:12:30Z
dc.journal.volume
57
dc.journal.number
318
dc.journal.pagination
1-18
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Ayriyan, Alexander. Laboratory of Information Technologies; Rusia. A. Alikhanyan National Laboratory; Armenia. Dubna State University; Rusia
dc.description.fil
Fil: Blaschke, David. University of Wroclaw; Polonia. Bogoliubov Laboratory for Theoretical Physics; Rusia. National Research Nuclear University; Rusia
dc.description.fil
Fil: Grunfeld, Ana Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
dc.description.fil
Fil: Alvarez Castillo, D. E.. Bogoliubov Laboratory for Theoretical Physics; Rusia. Henryk Niewodniczanski Institute of Nuclear Physics; Polonia
dc.description.fil
Fil: Grigorian, H.. A. Alikhanyan National Laboratory; Armenia. Yerevan State University; Armenia. Laboratory of Information Technologies; Rusia
dc.description.fil
Fil: Abgaryan, V.. Laboratory of Information Technologies; Rusia. A. Alikhanyan National Laboratory; Armenia. Peoples’ Friendship University of Russia; Rusia
dc.journal.title
European Physical Journal A: Hadrons and Nuclei
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1140/epja/s10050-021-00619-0
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1140/epja/s10050-021-00619-0
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