Polarimetric observations of nonstable stars and extragalactic objects. III. Polarization of quasars and galactic nuclei

Journal Article · Sat Jan 01 04:00:00 EST 1972 · Izv. Krym. Astrofiz. Observ., v. 46, pp. 3-13

OSTI ID:4336327

Efimov, Yu S; Shakhovskii, N M

The results of multicolor polarimetric observations of some quasars, N- galaxies, compact galaxies, and nuclei of Seyfert galaxies obtained in 1969-- 1970 with the 2.6-meter reflecting telescope, are presented. It was found that the polarization of quasar 3C 345 reached 45% during its flash in June 1969. Sometimes, a very large polarization (more than 20%) of the N-galaxies 3C 371 and 3C 390.3 takes place in the blue region as well as very sharp and nonmonotonous wavelength dependence of the degree and position angle of polarization. Apparently it may be during the time of their flashes. The quasar 3C 273 and Seyfert gallaxies NGC 4051, 4151, and 5548 also show the dependence of the position angle of polarization on the wavelength. To explain the wavelength dependence observed one needs to suppose that the light of different colors originates in different volumes having different orientation of magnetic field. The other possibility is the difference in mechanisms of polarization for different spectral regions. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-29-016547
• OSTI ID: 4336327
• Journal Information: Izv. Krym. Astrofiz. Observ., v. 46, pp. 3-13, Journal Name: Izv. Krym. Astrofiz. Observ., v. 46, pp. 3-13; ISSN IKAOA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

*GALAXIES-- POLARIZATION
*QUASARS-- POLARIZATION
*SEYFERT GALAXIES-- POLARIZATION
COLOR
N56300* --Physics (Astrophysics & Cosmology)--Quasi-stellar
Radio & X-Ray Sources
N56500 --Physics (Astrophysics & Cosmology)--Galaxies
SPECTRA