Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/217220
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | ALMA full polarization observations of PKS 1830-211 during its record-breaking flare of 2019 |
Autor: | Martí-Vidal, Iván; Müller, S.; Mus, A.; Marscher, Alan P.; Agudo, Iván CSIC ORCID ; Gómez, José L. CSIC ORCID | Palabras clave: | Gamma rays: general Polarization Quasars: individual: PKS1830-211 |
Fecha de publicación: | 30-jun-2020 | Editor: | EDP Sciences | Citación: | Astronomy & Astrophysics 638: L13 (2020) | Resumen: | We report Atacama Large Millimeter Array (ALMA) Band 6 full-polarization observations of the lensed blazar PKS 1830-211 during its record-breaking radio and gamma-ray flare in the spring of 2019. The observations were taken close to the peak of the gamma activity and show a clear difference in polarization state between the two time-delayed images. The leading image has a fractional polarization about three times lower than the trailing image, implying that significant depolarization occurred during the flare. In addition, we observe clear intra-hour variability of the polarization properties between the two lensed images, with a quasi-linear increase in the differential electric-vector position angle at a rate of about two degrees per hour, associated with changes in the relative fractional polarization of ∼10%. This variability, combined with the lower polarization close to the peak of gamma activity, is in agreement with models of magnetic turbulence to explain polarization variability in blazar jets. Finally, the comparison of results from the full and differential polarization analysis confirms that the differential polarization technique (Martí-Vidal et al. 2016, A&A, 593, A61) can provide useful information on the polarization state of sources like gravitationally lensed radio-loud quasars. © ESO 2020. | Versión del editor: | http://dx.doi.org/10.1051/0004-6361/202038094 | URI: | http://hdl.handle.net/10261/217220 | DOI: | 10.1051/0004-6361/202038094 | ISSN: | 0004-6361 |
Aparece en las colecciones: | (IAA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
IAA_2020AA...638...L13.pdf | 1,09 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
3
checked on 08-may-2024
WEB OF SCIENCETM
Citations
1
checked on 21-feb-2024
Page view(s)
167
checked on 13-may-2024
Download(s)
74
checked on 13-may-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.