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Kinematic Properties of the Ejected Matter in NGC 1275

  • J. M. Marr (a1), D. C. Backer (a1), M. C. H. Wright (a1), A. C. S. Readhead (a2) and R. Moore (a2)...

Abstract

We have mapped the nearby (z=0.018), active galaxy NGC 1275 (3C84) at 6 different epochs from 1981 to 1986 at 1.3 cm (22.3 GHz) with a global VLBI array of seven telescopes. We find a long-lived knot of emission separating from the brightest radio component with a projected velocity = 0.4 6±0.12 h−1 c. This knot moves through diffuse emission that also moves away from the main component with a slower projected velocity of 0.33±0.12 h−1 c. We show that the knot and diffuse emission result from two separate events that occurred around 1959 and 1968.

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Copyright

References

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Miley, G., 1980, Ann. Rev., 18, 165
O'Dea, C. P., Dent, W. A., and Balonek, T. J., 1984, Ap. J., 278, 89
Readhead, , Hough, , Ewing, , Walker, , and Romney, , 1983, Ap. J., 265, 167
Romney, , Alef, , Pauliny-Toth, , Preuss, , and Kellerman, , 1982, IAU Symposium, 92, 291
Romney, , Alef, , Pauliny-Toth, , Preuss, , and Kellerman, , 1984, IAU Symposium, 110, 137
Unwin, , Mutel, , Phillips, , and Linfield, , 1982, Ap. J., 256, 83

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