Optical polarimetric observations of the microquasar LS 5039

Mostrar todas las versiones(2)

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 avail...

Descripción completa

Detalles Bibliográficos
Autores principales: Combi, Jorge Ariel, Cellone, Sergio Aldo, Martí, J., Ribó, M., Mirabel Miquele, Igor Félix, Casares, J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84640
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84640
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
spellingShingle Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
Combi, Jorge Ariel
Cellone, Sergio Aldo
Martí, J.
Ribó, M.
Mirabel Miquele, Igor Félix
Casares, J.
Optical polarimetric observations of the microquasar LS 5039
topic_facet Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
description 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.
format Articulo
Articulo
author Combi, Jorge Ariel
Cellone, Sergio Aldo
Martí, J.
Ribó, M.
Mirabel Miquele, Igor Félix
Casares, J.
author_facet Combi, Jorge Ariel
Cellone, Sergio Aldo
Martí, J.
Ribó, M.
Mirabel Miquele, Igor Félix
Casares, J.
author_sort Combi, Jorge Ariel
title Optical polarimetric observations of the microquasar LS 5039
title_short Optical polarimetric observations of the microquasar LS 5039
title_full Optical polarimetric observations of the microquasar LS 5039
title_fullStr Optical polarimetric observations of the microquasar LS 5039
title_full_unstemmed Optical polarimetric observations of the microquasar LS 5039
title_sort optical polarimetric observations of the microquasar ls 5039
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/84640
work_keys_str_mv AT combijorgeariel opticalpolarimetricobservationsofthemicroquasarls5039
AT cellonesergioaldo opticalpolarimetricobservationsofthemicroquasarls5039
AT martij opticalpolarimetricobservationsofthemicroquasarls5039
AT ribom opticalpolarimetricobservationsofthemicroquasarls5039
AT mirabelmiqueleigorfelix opticalpolarimetricobservationsofthemicroquasarls5039
AT casaresj opticalpolarimetricobservationsofthemicroquasarls5039
bdutipo_str Repositorios
_version_ 1764820489036890113

Ejemplares similares