ON THE NATURE OF THE NON-THERMAL RADIO SOURCE AT THE CENTER OF THE ORION STREAMERS
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2010
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| _version_ | 1876482344210137088 |
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| author | Alfonso Trejo |
| author_facet | Alfonso Trejo |
| contents | ON THE NATURE OF THE NON-THERMAL RADIO SOURCE AT THE CENTER OF THE ORION STREAMERS Alfonso Trejo Luis F. Rodríguez Física, Astronomía y Matemáticas HH 222) thermal radio continuum: ISM radiation mechanisms: non ISM: individual (Orion Streamers We present VLA continuum observations at 20 and 6 cm toward a non-thermal radio source located at the Streamers region in Orion. We compare 1991 archive observations with new ones taken by us in 2008. The radio source could be a young stellar source or an evolved object like a microquasar or even a jet from a radio galaxy. Our analysis shows that there is no evidence of changes in the flux densities between both epochs at a level higher than 10%. Also, we set an upper limit at a 3o level of 23 mas year-1 for the proper motions. At the distance of Orion this implies an upper limit to the velocity in the plane of the sky of 45 km s¿1. At 6 cm, we detect linearly polarized emission at a level of ~5%, while at 20 cm we do not detect this emission above a level of ~2%. We conclude that the non-thermal radio source most probably is a radio galaxy aligned by chance with the line of sight to the Streamers in Orion. 2010 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115522014 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.46 |
| format | Artículo científico |
| id | redalyc_57115522014 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | ON THE NATURE OF THE NON-THERMAL RADIO SOURCE AT THE CENTER OF THE ORION STREAMERS Alfonso Trejo Física, Astronomía y Matemáticas HH 222) thermal radio continuum: ISM radiation mechanisms: non ISM: individual (Orion Streamers ON THE NATURE OF THE NON-THERMAL RADIO SOURCE AT THE CENTER OF THE ORION STREAMERS Alfonso Trejo Luis F. Rodríguez Física, Astronomía y Matemáticas HH 222) thermal radio continuum: ISM radiation mechanisms: non ISM: individual (Orion Streamers We present VLA continuum observations at 20 and 6 cm toward a non-thermal radio source located at the Streamers region in Orion. We compare 1991 archive observations with new ones taken by us in 2008. The radio source could be a young stellar source or an evolved object like a microquasar or even a jet from a radio galaxy. Our analysis shows that there is no evidence of changes in the flux densities between both epochs at a level higher than 10%. Also, we set an upper limit at a 3o level of 23 mas year-1 for the proper motions. At the distance of Orion this implies an upper limit to the velocity in the plane of the sky of 45 km s¿1. At 6 cm, we detect linearly polarized emission at a level of ~5%, while at 20 cm we do not detect this emission above a level of ~2%. We conclude that the non-thermal radio source most probably is a radio galaxy aligned by chance with the line of sight to the Streamers in Orion. 2010 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115522014 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.46 |
| title | ON THE NATURE OF THE NON-THERMAL RADIO SOURCE AT THE CENTER OF THE ORION STREAMERS |
| topic | Física, Astronomía y Matemáticas HH 222) thermal radio continuum: ISM radiation mechanisms: non ISM: individual (Orion Streamers |
| url | https://www.redalyc.org/articulo.oa?id=57115522014 |