The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar

We study the evolution of close binary systems formed by a normal (solar composition), intermediate-mass-donor star together with a neutron star. We consider models including irradiation feedback and evaporation. These nonstandard ingredients deeply modify the mass-transfer stages of these binaries....

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Detalles Bibliográficos
Autores: Benvenuto, Omar Gustavo, de Vito, María Alejandra, Horvath, J. E.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/14075
Acceso en línea:http://hdl.handle.net/11336/14075
Access Level:acceso abierto
Palabra clave:Close Binaries
Evolution of Stars
Pulsars
Psr J1723-2837 (Pulsar)
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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repository_id_str
spelling The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsarBenvenuto, Omar Gustavode Vito, María AlejandraHorvath, J. E.Close BinariesEvolution of StarsPulsarsPsr J1723-2837 (Pulsar)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the evolution of close binary systems formed by a normal (solar composition), intermediate-mass-donor star together with a neutron star. We consider models including irradiation feedback and evaporation. These nonstandard ingredients deeply modify the mass-transfer stages of these binaries. While models that neglect irradiation feedback undergo continuous, long-standing mass-transfer episodes, models including these effects suffer a number of cycles of mass transfer and detachment. During mass transfer, the systems should reveal themselves as low-mass X-ray binaries (LMXBs), whereas when they are detached they behave as binary radio pulsars. We show that at these stages irradiated models are in a Roche lobe overflow (RLOF) state or in a quasi-RLOF state. Quasi-RLOF stars have radii slightly smaller than their Roche lobes. Remarkably, these conditions are attained for an orbital period as well as donor mass values in the range corresponding to a family of binary radio pulsars known as "redbacks." Thus, redback companions should be quasi-RLOF stars. We show that the characteristics of the redback system PSR J1723-2837 are accounted for by these models. In each mass-transfer cycle these systems should switch from LMXB to binary radio pulsar states with a timescale of approximately one million years. However, there is recent and fast growing evidence of systems switching on far shorter, human timescales. This should be related to instabilities in the accretion disk surrounding the neutron star and/or radio ejection, still to be included in the model having the quasi-RLOF state as a general condition.Fil: Benvenuto, Omar Gustavo. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: de Vito, María Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Horvath, J. E.. Universidade Do Sao Paulo. Instituto Astronomia, Geofisica E Ciencias Atmosfericas; BrasilIop Publishing2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/14075Benvenuto, Omar Gustavo; de Vito, María Alejandra; Horvath, J. E.; The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar; Iop Publishing; Astrophysical Journal; 798; 44; 1-2015; 1-80004-637Xenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/0004-637X/798/1/44/info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/798/1/44info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:44:16Zoai:ri.conicet.gov.ar:11336/14075instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:44:16.283CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
title The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
spellingShingle The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
Benvenuto, Omar Gustavo
Close Binaries
Evolution of Stars
Pulsars
Psr J1723-2837 (Pulsar)
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
title_short The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
title_full The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
title_fullStr The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
title_full_unstemmed The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
title_sort The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar
dc.creator.none.fl_str_mv Benvenuto, Omar Gustavo
de Vito, María Alejandra
Horvath, J. E.
author Benvenuto, Omar Gustavo
author_facet Benvenuto, Omar Gustavo
de Vito, María Alejandra
Horvath, J. E.
author_role author
author2 de Vito, María Alejandra
Horvath, J. E.
author2_role author
author
dc.subject.none.fl_str_mv Close Binaries
Evolution of Stars
Pulsars
Psr J1723-2837 (Pulsar)
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic Close Binaries
Evolution of Stars
Pulsars
Psr J1723-2837 (Pulsar)
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
description We study the evolution of close binary systems formed by a normal (solar composition), intermediate-mass-donor star together with a neutron star. We consider models including irradiation feedback and evaporation. These nonstandard ingredients deeply modify the mass-transfer stages of these binaries. While models that neglect irradiation feedback undergo continuous, long-standing mass-transfer episodes, models including these effects suffer a number of cycles of mass transfer and detachment. During mass transfer, the systems should reveal themselves as low-mass X-ray binaries (LMXBs), whereas when they are detached they behave as binary radio pulsars. We show that at these stages irradiated models are in a Roche lobe overflow (RLOF) state or in a quasi-RLOF state. Quasi-RLOF stars have radii slightly smaller than their Roche lobes. Remarkably, these conditions are attained for an orbital period as well as donor mass values in the range corresponding to a family of binary radio pulsars known as "redbacks." Thus, redback companions should be quasi-RLOF stars. We show that the characteristics of the redback system PSR J1723-2837 are accounted for by these models. In each mass-transfer cycle these systems should switch from LMXB to binary radio pulsar states with a timescale of approximately one million years. However, there is recent and fast growing evidence of systems switching on far shorter, human timescales. This should be related to instabilities in the accretion disk surrounding the neutron star and/or radio ejection, still to be included in the model having the quasi-RLOF state as a general condition.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/14075
Benvenuto, Omar Gustavo; de Vito, María Alejandra; Horvath, J. E.; The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar; Iop Publishing; Astrophysical Journal; 798; 44; 1-2015; 1-8
0004-637X
url http://hdl.handle.net/11336/14075
identifier_str_mv Benvenuto, Omar Gustavo; de Vito, María Alejandra; Horvath, J. E.; The Quasi-Roche Lobe overflow state in the evolution of close binary systems containing a radio pulsar; Iop Publishing; Astrophysical Journal; 798; 44; 1-2015; 1-8
0004-637X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/0004-637X/798/1/44/
info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/798/1/44
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Iop Publishing
publisher.none.fl_str_mv Iop Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,812429

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