We report on an ongoing work aimed to detect the separation speed of the two hot-spots of the compact symmetric object OQ208.Comparing images at 8.4 GHz taken in 6 epoches between 1994 and 1997 we obtain an estimate o...We report on an ongoing work aimed to detect the separation speed of the two hot-spots of the compact symmetric object OQ208.Comparing images at 8.4 GHz taken in 6 epoches between 1994 and 1997 we obtain an estimate of 0.058±-0.038 mas/year as the relative motions between two components of the radio source.At the red-shift of OQ208 I mas correspond to 1pc,thus we obtain a projected jet speed of 0.095±0.062c.With an inclination of 45°between the jets and the line of sight,we have an actual jet velocity of 0.134±0.088c and therefore the kinematic age of the source is so young of 320±210 years.展开更多
基金Supported by the 95 Basic Research Key Project of Chinese Academy of Sciences under Grant No.KJ952-J303.
文摘We report on an ongoing work aimed to detect the separation speed of the two hot-spots of the compact symmetric object OQ208.Comparing images at 8.4 GHz taken in 6 epoches between 1994 and 1997 we obtain an estimate of 0.058±-0.038 mas/year as the relative motions between two components of the radio source.At the red-shift of OQ208 I mas correspond to 1pc,thus we obtain a projected jet speed of 0.095±0.062c.With an inclination of 45°between the jets and the line of sight,we have an actual jet velocity of 0.134±0.088c and therefore the kinematic age of the source is so young of 320±210 years.
