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dc.contributor.authorLópez Rodríguez, Enrique
dc.contributor.authorPackham, Christopher C.
dc.contributor.authorTadhunter, Clive N.
dc.contributor.authorMason, Rachel E.
dc.contributor.authorPerlman, Eric S.
dc.contributor.authorAlonso-Herrero, Almudena
dc.contributor.authorRamos Almeida, Cristina
dc.contributor.authorIchikawa, Kohei
dc.contributor.authorLevenson, Nancy A.
dc.contributor.authorRodríguez-Espinosa, José Miguel
dc.date.accessioned2017-01-25T22:12:08Z
dc.date.available2017-01-25T22:12:08Z
dc.date.issued2014-10-01
dc.identifier.citationLopez-Rodriguez, E., Packham, C., Tadhunter, C., Mason, R., Perlman, E., Alonso-Herrero, A., . . . Telesco, C. M. (2014). Polarized mid-infrared synchrotron emission in the core of cygnus A. Astrophysical Journal, 793(2) doi:10.1088/0004-637X/793/2/81en_US
dc.identifier.urihttp://hdl.handle.net/11141/1155
dc.description.abstractWe present high-angular (∼0". 4) resolution mid-infrared (MIR) polarimetric observations in the 8.7μm and 11.6μm filters of Cygnus A using CanariCam on the 10.4 m Gran Telescopio CANARIAS. A highly polarized nucleus is observed with a degree of polarization of 11% ±3% and 12% ±3% and a position angle of polarization of 27◦ ±8◦ and 35◦ ± 8◦ in a 0.".38 (∼380 pc) aperture for each filter. The observed rising of the polarized flux density with increasing wavelength is consistent with synchrotron radiation from the parsec-scale jet close to the core of Cygnus A. Based on our polarization model, the synchrotron emission from the parsec-scale jet is estimated to be 14% and 17% of the total flux density in the 8.7μm and 11.6μm filters, respectively. A blackbody component with a characteristic temperature of 220 K accounts for >75% of the observed MIR total flux density. The blackbody emission arises from a combination of (1) dust emission in the torus; and (2) diffuse dust emission around the nuclear region, but the contributions of the two components cannot be well-constrained in these observations.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is made available in accordance with the publisher’s policy. It may be subject to U.S. copyright law.en_US
dc.rights.urihttps://aas.org/publications/aas-copyright-policyen_US
dc.titlePolarized mid-infrared synchrotron emission in the core of Cygnus Aen_US
dc.typeArticleen_US
dc.identifier.doi10.1088/0004-637X/793/2/81


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