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Combi, J.A.; Cellone, S.A.; Martí, J.; Ribó, M.; Mirabel, I.F.; Casares, J. "Optical polarimetric observations of the microquasar LS 5039" (2004) Astronomy and Astrophysics. 427(3):959-963
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Abstract:

We present the first optical polarimetric observations of the runaway microquasar LS 5039. Our results reveal the presence of a large amount (∼5%) of polarized emission towards this binary system. By combining polarimetric and spectroscopic observations of some stars in the field together with available statistical information on the galactic interstellar polarization of the region, we have estimated and subtracted the contribution of the interstellar polarization in this direction. As a result, we obtain an intrinsic polarization of ∼3% for the object, much higher than what would be expected from jet emission in the optical domain. We suggest that the polarized light originates by electron Thomson scattering in the stellar envelope of the companion star. This allows us to constrain the size of the region where the polarized emission originates, as well as estimating the scattering electronic density and the wind velocity at such distance.

Registro:

Documento: Artículo
Título:Optical polarimetric observations of the microquasar LS 5039
Autor:Combi, J.A.; Cellone, S.A.; Martí, J.; Ribó, M.; Mirabel, I.F.; Casares, J.
Filiación:Departamento de Física, Escuela Politécnica Superior, Universidad de Jaén, Virgen de la Cabeza 2, 23071 Jaén, Spain
Inst. Argentine de Radioastronomia, C.C.5, (1894) Villa Elisa, Buenos Aires, Argentina
Fac. de Cie. Astronomicas y Geofis., UNLP, Paseo del Bosque, B1900FWA La Plata, Argentina
Service d'Astrophysique, CEA Saclay, Bât. 709, L'Orme des Merisiers, 91191 Gif-sur-Yvette Cedex, France
Inst. Astronomia y Fis. Espacio, CONICET, C.C.67, Suc. 28, 1428 Buenos Aires, Argentina
Inst. de Astrofis. de Canarias, 38200 La Laguna, Tenerife, Spain
Palabras clave:Binaries; Binaries - Stars; General - Polarization; Individual; LS 5039 - X-rays; Stars; Computational geometry; Electronic density of states; Electrons; Interpolation; Magnetic fields; Polarization; Spectroscopic analysis; Statistical methods; Vectors; Velocity; Binaries-stars; General-polarization; LS 5039-X-rays; Stars; Polarimeters
Año:2004
Volumen:427
Número:3
Página de inicio:959
Página de fin:963
DOI: http://dx.doi.org/10.1051/0004-6361:20041433
Título revista:Astronomy and Astrophysics
Título revista abreviado:Astron. Astrophys.
ISSN:00046361
CODEN:AAEJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v427_n3_p959_Combi

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Citas:

---------- APA ----------
Combi, J.A., Cellone, S.A., Martí, J., Ribó, M., Mirabel, I.F. & Casares, J. (2004) . Optical polarimetric observations of the microquasar LS 5039. Astronomy and Astrophysics, 427(3), 959-963.
http://dx.doi.org/10.1051/0004-6361:20041433
---------- CHICAGO ----------
Combi, J.A., Cellone, S.A., Martí, J., Ribó, M., Mirabel, I.F., Casares, J. "Optical polarimetric observations of the microquasar LS 5039" . Astronomy and Astrophysics 427, no. 3 (2004) : 959-963.
http://dx.doi.org/10.1051/0004-6361:20041433
---------- MLA ----------
Combi, J.A., Cellone, S.A., Martí, J., Ribó, M., Mirabel, I.F., Casares, J. "Optical polarimetric observations of the microquasar LS 5039" . Astronomy and Astrophysics, vol. 427, no. 3, 2004, pp. 959-963.
http://dx.doi.org/10.1051/0004-6361:20041433
---------- VANCOUVER ----------
Combi, J.A., Cellone, S.A., Martí, J., Ribó, M., Mirabel, I.F., Casares, J. Optical polarimetric observations of the microquasar LS 5039. Astron. Astrophys. 2004;427(3):959-963.
http://dx.doi.org/10.1051/0004-6361:20041433