Re: Superluminal Quasar Jets : The Beaming "Explanation" Appears Inadequate

From: Joseph Lazio (jlazio_at_adams.patriot.net)
Date: 03/23/05 

Date: 23 Mar 2005 11:10:03 -0500

>>>>> "JG" == Jim Greenfield <jgreen@seol.net.au> writes:

JG> Jonathan Silverlight
JG> <jsilverlight@spam.merseia.fsnet.co.uk.invalid> wrote in message

>>> It would be most interesting to obtain spectra for 3C273's jet.
>>> If, as Thomson et al argued in 1993, the outer jet is nearly
>>> perpendicular to the line of sight, the jet must -- to satisfy the
>>> beaming hypothesis -- almost turn a corner at some point, or else
>>> do some entertaining convolutions. Or else the theory does ...

>> Spectra have been obtained but they don't show any lines - they are
>> apparently a "synchrotron continuum"
>> <http://www.cfht.hawaii.edu/Reference/Bulletin/Bull36/bulleti3.htm>

JG> If c'=c+v then radiation emitted from a jet of superlumenal
JG> material of any approach angle to us which is positive will be
JG> visible, and of an undetermined blue shift (as we don't know the
JG> emitted frequency at source. EMR from a receding jet may be red
JG> shifted so much that it has negative velocity to us, and the jet
JG> is invisible......... ........which explains precisely why only
JG> one of a likely pair of jets is observed!

Of course, one can make a similar prediction within special
relativity. Highly relativistic material emits radiation into a
fairly narrow beam. If the beam is not pointed toward you, the
radiation from the material is strongly dimmed. 

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