One-sided jet at milliarcsecond scales in LSI+61·303

We present Very Long Baseline Interferometry (VLBI) observations of the high mass X-ray binary LSI+61303, carried out with the European VLBI Network (EVN). Over the 11 hour observing run, performed 10 days after a radio outburst, the radio source showed a constant flux density, which allowed sensiti...

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Autores: Massi, M., Ribó Gomis, Marc, Paredes i Poy, Josep Maria, Peracaula i Bosch, Marta, Estalella, Robert
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2001
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:2445/45371
Acceso en línea:https://hdl.handle.net/2445/45371
Access Level:acceso abierto
Palabra clave:Estels
Estels binaris de raigs X
Radioastronomia
Astrofísica
Quàsars
Jets (Astrofísica)
Stars
X-ray binaries
Radio astronomy
Astrophysics
Quasars
Astrophysical jets
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oai_identifier_str oai:recercat.cat:2445/45371
network_acronym_str ES
network_name_str España
repository_id_str
spelling One-sided jet at milliarcsecond scales in LSI+61·303Massi, M.Ribó Gomis, MarcParedes i Poy, Josep MariaPeracaula i Bosch, MartaEstalella, RobertEstelsEstels binaris de raigs XRadioastronomiaAstrofísicaQuàsarsJets (Astrofísica)StarsX-ray binariesRadio astronomyAstrophysicsQuasarsAstrophysical jetsWe present Very Long Baseline Interferometry (VLBI) observations of the high mass X-ray binary LSI+61303, carried out with the European VLBI Network (EVN). Over the 11 hour observing run, performed 10 days after a radio outburst, the radio source showed a constant flux density, which allowed sensitive imaging of the emission distribution. The structure in the map shows a clear extension to the southeast. Comparing our data with previous VLBI observations we interpret the extension as a collimated radio jet as found in several other X-ray binaries. Assuming that the structure is the result of an expansion that started at the onset of the outburst, we derive an apparent expansion velocity of 0.003 c, which, in the context of Doppler boosting, corresponds to an intrinsic velocity of at least 0.4 c for an ejection close to the line of sight. From the apparent velocity in all available epochs we are able to establish variations in the ejection angle which imply a precessing accretion disk. Finally we point out that LSI+61303, like SS433 and Cygnus X-1, shows evidence for an emission region almost orthogonal to the relativistic jet.Springer Verlag2013201320012013info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion7 p.application/pdfhttps://hdl.handle.net/2445/45371Articles 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)InglésVersió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361:20010953Astronomy and Astrophysics, 2001, vol. 376, num. 1, p. 217-223http://dx.doi.org/10.1051/0004-6361:20010953(c) Springer Verlag, 2001info:eu-repo/semantics/openAccessoai:recercat.cat:2445/453712026-05-29T05:05:01Z
dc.title.none.fl_str_mv One-sided jet at milliarcsecond scales in LSI+61·303
title One-sided jet at milliarcsecond scales in LSI+61·303
spellingShingle One-sided jet at milliarcsecond scales in LSI+61·303
Massi, M.
Estels
Estels binaris de raigs X
Radioastronomia
Astrofísica
Quàsars
Jets (Astrofísica)
Stars
X-ray binaries
Radio astronomy
Astrophysics
Quasars
Astrophysical jets
title_short One-sided jet at milliarcsecond scales in LSI+61·303
title_full One-sided jet at milliarcsecond scales in LSI+61·303
title_fullStr One-sided jet at milliarcsecond scales in LSI+61·303
title_full_unstemmed One-sided jet at milliarcsecond scales in LSI+61·303
title_sort One-sided jet at milliarcsecond scales in LSI+61·303
dc.creator.none.fl_str_mv Massi, M.
Ribó Gomis, Marc
Paredes i Poy, Josep Maria
Peracaula i Bosch, Marta
Estalella, Robert
author Massi, M.
author_facet Massi, M.
Ribó Gomis, Marc
Paredes i Poy, Josep Maria
Peracaula i Bosch, Marta
Estalella, Robert
author_role author
author2 Ribó Gomis, Marc
Paredes i Poy, Josep Maria
Peracaula i Bosch, Marta
Estalella, Robert
author2_role author
author
author
author
dc.subject.none.fl_str_mv Estels
Estels binaris de raigs X
Radioastronomia
Astrofísica
Quàsars
Jets (Astrofísica)
Stars
X-ray binaries
Radio astronomy
Astrophysics
Quasars
Astrophysical jets
topic Estels
Estels binaris de raigs X
Radioastronomia
Astrofísica
Quàsars
Jets (Astrofísica)
Stars
X-ray binaries
Radio astronomy
Astrophysics
Quasars
Astrophysical jets
description We present Very Long Baseline Interferometry (VLBI) observations of the high mass X-ray binary LSI+61303, carried out with the European VLBI Network (EVN). Over the 11 hour observing run, performed 10 days after a radio outburst, the radio source showed a constant flux density, which allowed sensitive imaging of the emission distribution. The structure in the map shows a clear extension to the southeast. Comparing our data with previous VLBI observations we interpret the extension as a collimated radio jet as found in several other X-ray binaries. Assuming that the structure is the result of an expansion that started at the onset of the outburst, we derive an apparent expansion velocity of 0.003 c, which, in the context of Doppler boosting, corresponds to an intrinsic velocity of at least 0.4 c for an ejection close to the line of sight. From the apparent velocity in all available epochs we are able to establish variations in the ejection angle which imply a precessing accretion disk. Finally we point out that LSI+61303, like SS433 and Cygnus X-1, shows evidence for an emission region almost orthogonal to the relativistic jet.
publishDate 2001
dc.date.none.fl_str_mv 2001
2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/45371
url https://hdl.handle.net/2445/45371
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361:20010953
Astronomy and Astrophysics, 2001, vol. 376, num. 1, p. 217-223
http://dx.doi.org/10.1051/0004-6361:20010953
dc.rights.none.fl_str_mv (c) Springer Verlag, 2001
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Springer Verlag, 2001
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 7 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
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 15.81155

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