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dc.contributor.authorMarti-Vidal, I.en_US
dc.contributor.authorMuller, S.en_US
dc.contributor.authorMus, A.en_US
dc.contributor.authorMarscher, Alan P.en_US
dc.contributor.authorAgudo, I.en_US
dc.contributor.authorGomez, J.L.en_US
dc.date.accessioned2021-04-06T17:44:00Z
dc.date.available2021-04-06T17:44:00Z
dc.date.issued2020-06
dc.identifier.citationI. Marti-Vidal, S. Muller, A. Mus, A. Marscher, I. Agudo, J.L. Gomez. 2020. "ALMA full polarization observations of PKS 1830−211 during its record-breaking flare of 2019." Astronomy & Astrophysics, Volume 638, pp. L13 - L13. https://doi.org/10.1051/0004-6361/202038094
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746
dc.identifier.urihttps://hdl.handle.net/2144/42357
dc.description.abstractWe 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.en_US
dc.format.extentp. L13en_US
dc.language.isoen_US
dc.publisherEDP Sciencesen_US
dc.relation.ispartofAstronomy & Astrophysics
dc.subjectPolarizationen_US
dc.subjectGamma rays: generalen_US
dc.subjectQuasars: individual: PKS1830-211en_US
dc.subjectAstronomy & astrophysicsen_US
dc.subjectAstronomical and space sciencesen_US
dc.titleALMA full polarization observations of PKS 1830−211 during its record-breaking flare of 2019en_US
dc.typeArticleen_US
dc.description.versionAccepted manuscripten_US
dc.identifier.doi10.1051/0004-6361/202038094
pubs.elements-sourcecrossrefen_US
pubs.notesEmbargo: No embargoen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Arts & Sciencesen_US
pubs.organisational-groupBoston University, College of Arts & Sciences, Department of Astronomyen_US
pubs.publication-statusPublisheden_US
dc.date.online2020-06-30
dc.identifier.orcid0000-0001-7396-3332 (Marscher, A)
dc.identifier.mycv570362


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