The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039
LS 5039 is one of the few TeV emitting X-ray binaries detected so far. The powering source of its multiwavelength emission can be accretion in a microquasar scenario or wind interaction in a young nonaccreting pulsar scenario. Aims.To present new high-resolution radio images and compare them with th...
| Autores: | ; ; ; ; |
|---|---|
| Tipo de documento: | Artículo |
| Estado: | Accepted version |
| Fecha de publicación: | 2008 |
| 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:2445/45125 |
| Acceso en línea: | https://hdl.handle.net/2445/45125 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Radiofonts Radioastronomia Astrofísica Estels binaris de raigs X Radio sources (Astronomy) Radio astronomy Astrophysics X-ray binaries |
| _version_ | 1878739096657985536 |
|---|---|
| author | Ribó Gomis, Marc |
| author2 | Paredes i Poy, Josep Maria Moldón Vara, Francisco Javier Martí Ribas, Josep Massi, M. |
| author2_role | author author author author |
| author_browse | Martí Ribas, Josep Massi, M. Moldón Vara, Francisco Javier Paredes i Poy, Josep Maria Ribó Gomis, Marc |
| author_facet | Ribó Gomis, Marc Paredes i Poy, Josep Maria Moldón Vara, Francisco Javier Martí Ribas, Josep Massi, M. |
| author_role | author |
| collection | Recercat. Dipósit de la Recerca de Catalunya |
| description | LS 5039 is one of the few TeV emitting X-ray binaries detected so far. The powering source of its multiwavelength emission can be accretion in a microquasar scenario or wind interaction in a young nonaccreting pulsar scenario. Aims.To present new high-resolution radio images and compare them with the expected behavior in the different scenarios. Methods.We analyze Very Long Baseline Array (VLBA) radio observations that provide morphological and astrometric information at milliarcsecond scales. Results.We detect a changing morphology between two images obtained five days apart. In both runs there is a core component with a constant flux density, and an elongated emission with a position angle (PA) that changes by 12 $\pm$ $3\degr$ between both runs. The source is nearly symmetric in the first run and asymmetric in the second one. The astrometric results are not conclusive. Conclusions.A simple and shockless microquasar scenario cannot easily explain the observed changes in morphology. An interpretation within the young nonaccreting pulsar scenario requires the inclination of the binary system to be very close to the upper limit imposed by the absence of X-ray eclipses. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_bb07a239c723b7a05b5d48e8c8c474b0 |
| institution | 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) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:recercat.cat:2445/45125 |
| publishDate | 2008 |
| publishDateSort | 2008 |
| publisher | Springer Verlag |
| publisherStr | Springer Verlag |
| reponame_str | Recercat. Dipósit de la Recerca de Catalunya |
| spelling | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 Ribó Gomis, Marc Paredes i Poy, Josep Maria Moldón Vara, Francisco Javier Martí Ribas, Josep Massi, M. Radiofonts Radioastronomia Astrofísica Estels binaris de raigs X Radio sources (Astronomy) Radio astronomy Astrophysics X-ray binaries LS 5039 is one of the few TeV emitting X-ray binaries detected so far. The powering source of its multiwavelength emission can be accretion in a microquasar scenario or wind interaction in a young nonaccreting pulsar scenario. Aims.To present new high-resolution radio images and compare them with the expected behavior in the different scenarios. Methods.We analyze Very Long Baseline Array (VLBA) radio observations that provide morphological and astrometric information at milliarcsecond scales. Results.We detect a changing morphology between two images obtained five days apart. In both runs there is a core component with a constant flux density, and an elongated emission with a position angle (PA) that changes by 12 $\pm$ $3\degr$ between both runs. The source is nearly symmetric in the first run and asymmetric in the second one. The astrometric results are not conclusive. Conclusions.A simple and shockless microquasar scenario cannot easily explain the observed changes in morphology. An interpretation within the young nonaccreting pulsar scenario requires the inclination of the binary system to be very close to the upper limit imposed by the absence of X-ray eclipses. Springer Verlag https://hdl.handle.net/2445/45125 |
| spellingShingle | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 Ribó Gomis, Marc Radiofonts Radioastronomia Astrofísica Estels binaris de raigs X Radio sources (Astronomy) Radio astronomy Astrophysics X-ray binaries |
| status_str | acceptedVersion |
| title | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 |
| title_full | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 |
| title_fullStr | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 |
| title_full_unstemmed | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 |
| title_short | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 |
| title_sort | The changing milliarcsecond radio morphology of the gamma-ray binary LS 5039 |
| topic | Radiofonts Radioastronomia Astrofísica Estels binaris de raigs X Radio sources (Astronomy) Radio astronomy Astrophysics X-ray binaries |
| topic_facet | Radiofonts Radioastronomia Astrofísica Estels binaris de raigs X Radio sources (Astronomy) Radio astronomy Astrophysics X-ray binaries |
| url | https://hdl.handle.net/2445/45125 |