Результаты исследований: Научные публикации в периодических изданиях › статья в журнале по материалам конференции › Рецензирование
Multifrequency polarization properties of blazars. / Jorstad, S.; Marscher, A.; Stevens, J.; Smith, P.; Forster, J.; Lister, M.; Stirling, A.; Gómez, J.; Cawthorne, T.; Gear, W.; Robson, I.
в: Chinese Journal of Astronomy and Astrophysics, Том 6, № SUPPL. 1, 2006, стр. 247-252.Результаты исследований: Научные публикации в периодических изданиях › статья в журнале по материалам конференции › Рецензирование
}
TY - JOUR
T1 - Multifrequency polarization properties of blazars
AU - Jorstad, S.
AU - Marscher, A.
AU - Stevens, J.
AU - Smith, P.
AU - Forster, J.
AU - Lister, M.
AU - Stirling, A.
AU - Gómez, J.
AU - Cawthorne, T.
AU - Gear, W.
AU - Robson, I.
PY - 2006
Y1 - 2006
N2 - We report preliminary results of a 3-year multifrequency polarization campaign of 15 AGNs of blazar type, including bimonthly total and polarized intensity imaging at 7 mm with the VLBA. We find that the sources have two different dependences of degree of polarization on wavelength: sub-mm peaked or straight "polarization spectra". The fractional polarization of the latter group increases with frequency. All sources with sub-mm peak polarization (6 objects) have similar degree of polarization in the optical region and in the VLBA core. In high-optically polarized sources (5 objects) the EVPAs at all frequencies align with the pc-scale jet direction within the 1σ uncertainties. This implies that the high frequency emission is co-spatial with the VLBI core and/or transverse shocks in the jet.
AB - We report preliminary results of a 3-year multifrequency polarization campaign of 15 AGNs of blazar type, including bimonthly total and polarized intensity imaging at 7 mm with the VLBA. We find that the sources have two different dependences of degree of polarization on wavelength: sub-mm peaked or straight "polarization spectra". The fractional polarization of the latter group increases with frequency. All sources with sub-mm peak polarization (6 objects) have similar degree of polarization in the optical region and in the VLBA core. In high-optically polarized sources (5 objects) the EVPAs at all frequencies align with the pc-scale jet direction within the 1σ uncertainties. This implies that the high frequency emission is co-spatial with the VLBI core and/or transverse shocks in the jet.
KW - 3C 120)
KW - 3C 273
KW - 3C 279
KW - 3C 345
KW - 3C 454.3)
KW - Active
KW - BL Lac)
KW - CTA 102
KW - Galaxies: BL Lacertae objects: individual (3C 66A
KW - Galaxies: individual (3C 111
KW - Galaxies: jet
KW - Galaxies: quasars: individual (0420-014
KW - OJ 287
KW - PKS 1510-089
UR - http://www.scopus.com/inward/record.url?scp=84891838155&partnerID=8YFLogxK
U2 - 10.1088/1009-9271/6/s1/31
DO - 10.1088/1009-9271/6/s1/31
M3 - Conference article
AN - SCOPUS:84891838155
VL - 6
SP - 247
EP - 252
JO - Chinese Journal of Astronomy and Astrophysics
JF - Chinese Journal of Astronomy and Astrophysics
SN - 1009-9271
IS - SUPPL. 1
T2 - 6th International Workshop on Multifrequency Behaviour of High Energy Cosmic Sources: Frascati Workshop 2005
Y2 - 23 May 2005 through 28 May 2005
ER -
ID: 88374614