On Mon, 30 Aug 2004, Bartosz Lew wrote:
On Mon, 30 Aug 2004, Boud Roukema wrote:
On Mon, 30 Aug 2004, Bartosz Lew wrote:
On Fri, 27 Aug 2004, Boud Roukema wrote:
detected when they are superliuminal. in fact superluminality isn't a condition "sine qua non" for doing this thing.
It seems to me that they are more *likely* to be detected when they are superluminal - and the doppler boosting has a big role in this.
I agree, thats why we try to play only with these guys, but it's a trade of choosing between luminosity (superliminality) and angular resolution ofthe VLBI capabilities measuring proper motions.
Ouch. That's probably something else which needs to be modelled and corrected. Selection effects are what a lot of the hard work is about in observational cosmology... ;)
pozdr boud
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