Observations of Jupiter's radio spectrum and polarization in the range from 6 cm to 100 cm |
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| Affiliation: | 1. Department of Nanophotonics and Metamaterials, ITMO University, St. Petersburg 197101, Russia;2. Department of Radio Science and Engineering, Aalto University, Aalto FI-00076, Finland;3. Nonlinear Physics Center, Australian National University, Canberra ACT 0200, Australia;1. Departamento de Ingenieria Electronica, Division de Ingenierias Campus Irapuato-Salamanca, Universidad de Guanajuato, Carretera Salamanca-Valle de Santiago km 3.5+1.8, Comunidad de Palo Blanco, Salamanca, Guanajuato 36787, Mexico;2. Investigadoras e investigadores por Mexico, Catedras CONAHCYT, Av. Insurgentes Sur No. 1582, Credito Constructor, Benito Juárez 03940, Mexico;3. Centro de Investigaciones en Optica A. C. (CIO), Loma del Bosque 115, Col. Lomas del Campestre, Leon, Guanajuato 37150, Mexico;4. Facultad de Ingenieria y Ciencias, Centro Universitario, Universidad Autonoma de Tamaulipas (UAT), Matamoros SN, Zona Centro, 87000 Cd. Victoria, Tamaulipas, Mexico;1. Centro de Investigaciones en Óptica, A.C., Loma de Bosque 115, Col. Lomas del Campestre, León, Gto. 37115, Mexico;2. Instituto Nacional de Astrofísica, Óptica y Electrónica, L. E. Erro 1, Sta. Ma. Tonantzintla, Pue. 72824, Mexico;3. Instituto de Investigación en Comunicación Óptica (IICO), Universidad Autónoma de San Luis Potosí, Av. Karakorum No. 1470 Lomas 4ª Secc., 78210, San Luis Potosí, México;4. Division de Ingenierias CIS, Universidad de Guanajuato, Carretera Salamanca-Valle de Santiago km, 3.5+1.8 km, Comunidad de Palo Blanco, Salamanca,Gto. 36787, Mexico;5. Investigadoras e investigadores por Mexico CONAHCYT, Av. Insurgentes Sur No. 1582, Credito, Constructor, Benito Juárez, 03940, Mexico;6. Departamento de Investigación en Física. Universidad de Sonora, Blvd. Luis Encinas y Rosales, Hermosillo, Sonora 83000, Mexico |
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| Abstract: | An extensive series of complete determinations of the linear polarization of Jupiter's radio emission at wavelengths of 6, 10, 11, 21, 74, and 100 cm is presented. A search for circular polarization at a wavelength of 31 cm is reported. Recordings of a lunar occultation of the source are also given.The rocking of the plane of polarization with rotation of the planet is shown to be asymmetric in form, probably reflecting some asymmetry in the radiation belt. The beaming of the radiation is used to infer the pitch angle distribution of the electrons in the belt. The distribution appears to change with energy, relatively more of the higher energy electrons being in very flat helices. The flux density of both the polarized and unpolarized nonthermal radiation is shown to be essentially independent of wavelength over the range from 6 to 74 cm. |
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