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Jets polarization and spectral properties of 18 gamma-ray quasars

Yu.N.Vetukhnovskay, V.E. Yakimov , D.Gabuzda. Jets polarization and spectral properties of 18 gamma-ray quasars. Observations: VLBA ,frequencies 5 and 15 GHz, two circular polarizations. Calibration: AIPS usual tasks.

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Jets polarization and spectral properties of 18 gamma-ray quasars

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  1. Yu.N.Vetukhnovskay, V.E. Yakimov , D.Gabuzda Jets polarization and spectral properties of 18 gamma-ray quasars

  2. Observations: VLBA ,frequencies 5 and 15 GHz, two circular polarizations. Calibration: AIPS usual tasks. Images: AIPS, DIFMAP . Model fitting: DIFMAT, VISFIT

  3. 0202+149 0.405 0.827+247 0.941 1611+343 1.401 0234+285 1.207 1156+295 0.729 1633+382 1.807 0420-014 0.915 1222+216 0.435 1739+522 1.381 0446+112 1.207 1406-076 1.494 1741-038 1.054 0528+134 2.070 1510-089 0.360 2022-077 1.388 0804+499 1.432 1606+106 1.226 2230+114 1.037 name z name z name z

  4. 1741-038 is optically thick (Kovalev et al, 1999) The core and jet of 0202+149 is unpolarized at 15 GHz (<0.5%) At 15 GHz jet of 2022-077 is also unpolarized (<0.3%)

  5. 1741-038 at 5 and 15 GHz

  6. 0202+149 15 GHz 2022-077 15 GHz

  7. The jets of of gamma-ray-quasars may be extent (1606+106 and 2230+114) The length of jet of 1611+343 is the same from 5 to 43 Ghz Spine-sheath polarization structure of 1606+106

  8. 1633+382, 5 GHz 2230+114, 5 GHz

  9. 1606+106 at 15 GHz and 5 GHz

  10. The fractional polarization of the components for models of quasarsmaybe >30%. Components I and P not always coincide. In greycolour for 1611+343 and 1633+382 the fractional polarizationdistribution at two frequencies.

  11. FPOL 1611+343 at 5 and 15 GHz

  12. FPOL 1633+382 at 15 and 5 GHz

  13. Definition of the Rotation Measure for two frequencies is not correct, but it is sometimes interesting. Example - RM for 1633+382

  14. TheAIPStaskCOMBwasusedforspectralindexdefinition. Thecorepositionfor 5 and15GHZ are different (Lobanov,1998 andreferencestherein; Pushkarevetal, 2008) Mapsattwofrequencieswiththesamebeamwidth. Modelfittingandopticallythincomponentsattwomaps.

  15. 0202+149 (dr=0.82mas)

  16. Spectral index 0234+285 (dr=043mas)

  17. Spectal index 1611+343 (dr=0.40mas)

  18. 1633+382 (dr=0.73)

  19. 1406-076 (dr=0.13mas) 2230+114 (dr=0.94mas)

  20. The core shifts 0202+149 0.82 mas 1606+106 0.37 mas 0234+285 0.43 mas 1611+343 0.40 mas 0827+243 0.00 mas 1633+382 0.73 mas 1222+216 0.64 mas 2230+114 0.94 mas 1406-076 0.13 mas

  21. Brightness temperatures distribution along the jets.

  22. Thank you

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