On the origin of LS 5039 and PSR J1825-1446

The gamma-ray binary LS 5039 and the isolated pulsar PSR J1825-1446 were proposed to have been formed in the supernova remnant (SNR) G016.8-01.1. Aims. We aim to obtain the Galactic trajectory of LS 5039 and PSR J1825-1446 to find their origin in the Galaxy, and in particular to check their associat...

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Autores: Moldón Vara, Francisco Javier, Ribó Gomis, Marc, Paredes i Poy, Josep Maria
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/150970
Acceso en línea:https://hdl.handle.net/2445/150970
Access Level:acceso abierto
Palabra clave:Púlsars
Estrelles de mar
Raigs X
Raigs gamma
Pulsars
Starfishes
X-rays
Gamma rays
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spelling On the origin of LS 5039 and PSR J1825-1446Moldón Vara, Francisco JavierRibó Gomis, MarcParedes i Poy, Josep MariaPúlsarsEstrelles de marRaigs XRaigs gammaPulsarsStarfishesX-raysGamma raysThe gamma-ray binary LS 5039 and the isolated pulsar PSR J1825-1446 were proposed to have been formed in the supernova remnant (SNR) G016.8-01.1. Aims. We aim to obtain the Galactic trajectory of LS 5039 and PSR J1825-1446 to find their origin in the Galaxy, and in particular to check their association with SNR G016.8-01.1 to restrict their age. Methods. By means of radio and optical observations we obtained the proper motion and the space velocity of the sources. Results. The proper motion of PSR J1825-1446 corresponds to a transverse space velocity of 690 km/s at a distance of 5 kpc. Its Galactic velocity at different distances is not compatible with the expected Galactic rotation. The velocity and characteristic age of PSR J1825-1446 make it incompatible with SNR G016.8-01.1. There are no clear OB associations or SNRs crossing the past trajectory of PSR J1825-1446. We estimate the age of the pulsar to be 80-245 kyr, which is compatible with its characteristic age. The proper motion of LS 5039 is 7.09 and -8.82 mas/yr in right ascension and declination, respectively. The association of LS 5039 with SNR G016.8-01.1 is unlikely, although we cannot to discard it. The system would have had to be formed in the association Ser OB2 (at 2.0 kpc) if the age of the system is 1.0-1.2 Myr, or in the association Sct OB3 (distance 1.5-2 kpc) for an age of 0.1-0.2 Myr. If the system were not formed close to Ser OB2, the pseudo-synchronization of the orbit would be unlikely. Conclusions. PSR J1825-1446 is a high-velocity isolated pulsar ejected from the Galaxy. The distance to LS 5039, which needs to be constrained by future astrometric missions such as Gaia, is a key parameter for restricting its origin and age.EDP Sciences2020202020122020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/2445/150970Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1051/0004-6361/201219205Astronomy & Astrophysics, 2012, vol. 543, num. A&A, p. A26https://doi.org/10.1051/0004-6361/201219205(c) The European Southern Observatory (ESO), 2012info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1509702026-05-29T05:05:01Z
dc.title.none.fl_str_mv On the origin of LS 5039 and PSR J1825-1446
title On the origin of LS 5039 and PSR J1825-1446
spellingShingle On the origin of LS 5039 and PSR J1825-1446
Moldón Vara, Francisco Javier
Púlsars
Estrelles de mar
Raigs X
Raigs gamma
Pulsars
Starfishes
X-rays
Gamma rays
title_short On the origin of LS 5039 and PSR J1825-1446
title_full On the origin of LS 5039 and PSR J1825-1446
title_fullStr On the origin of LS 5039 and PSR J1825-1446
title_full_unstemmed On the origin of LS 5039 and PSR J1825-1446
title_sort On the origin of LS 5039 and PSR J1825-1446
dc.creator.none.fl_str_mv Moldón Vara, Francisco Javier
Ribó Gomis, Marc
Paredes i Poy, Josep Maria
author Moldón Vara, Francisco Javier
author_facet Moldón Vara, Francisco Javier
Ribó Gomis, Marc
Paredes i Poy, Josep Maria
author_role author
author2 Ribó Gomis, Marc
Paredes i Poy, Josep Maria
author2_role author
author
dc.subject.none.fl_str_mv Púlsars
Estrelles de mar
Raigs X
Raigs gamma
Pulsars
Starfishes
X-rays
Gamma rays
topic Púlsars
Estrelles de mar
Raigs X
Raigs gamma
Pulsars
Starfishes
X-rays
Gamma rays
description The gamma-ray binary LS 5039 and the isolated pulsar PSR J1825-1446 were proposed to have been formed in the supernova remnant (SNR) G016.8-01.1. Aims. We aim to obtain the Galactic trajectory of LS 5039 and PSR J1825-1446 to find their origin in the Galaxy, and in particular to check their association with SNR G016.8-01.1 to restrict their age. Methods. By means of radio and optical observations we obtained the proper motion and the space velocity of the sources. Results. The proper motion of PSR J1825-1446 corresponds to a transverse space velocity of 690 km/s at a distance of 5 kpc. Its Galactic velocity at different distances is not compatible with the expected Galactic rotation. The velocity and characteristic age of PSR J1825-1446 make it incompatible with SNR G016.8-01.1. There are no clear OB associations or SNRs crossing the past trajectory of PSR J1825-1446. We estimate the age of the pulsar to be 80-245 kyr, which is compatible with its characteristic age. The proper motion of LS 5039 is 7.09 and -8.82 mas/yr in right ascension and declination, respectively. The association of LS 5039 with SNR G016.8-01.1 is unlikely, although we cannot to discard it. The system would have had to be formed in the association Ser OB2 (at 2.0 kpc) if the age of the system is 1.0-1.2 Myr, or in the association Sct OB3 (distance 1.5-2 kpc) for an age of 0.1-0.2 Myr. If the system were not formed close to Ser OB2, the pseudo-synchronization of the orbit would be unlikely. Conclusions. PSR J1825-1446 is a high-velocity isolated pulsar ejected from the Galaxy. The distance to LS 5039, which needs to be constrained by future astrometric missions such as Gaia, is a key parameter for restricting its origin and age.
publishDate 2012
dc.date.none.fl_str_mv 2012
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/150970
url https://hdl.handle.net/2445/150970
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/201219205
Astronomy & Astrophysics, 2012, vol. 543, num. A&A, p. A26
https://doi.org/10.1051/0004-6361/201219205
dc.rights.none.fl_str_mv (c) The European Southern Observatory (ESO), 2012
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) The European Southern Observatory (ESO), 2012
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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