Why are the 'Fixed Stars' so FIXED?

"Henri Wilson" HW@.... wrote in message
...
On Mon, 26 Feb 2007 20:24:05 -0000, "George Dishman"

wrote:
"Henri Wilson" HW@.... wrote in message
. ..
On Mon, 26 Feb 2007 00:15:09 -0000, "George Dishman"
....
so neither you
nor I know what it is that I'm supposed to be matching.

You are supposed to be matching the velocity curve. We
also know the phase which we can use next and may improve
the determination.

It isn't as easy as you think. See my latest post.
My green curve is a measure of acceleration not velocity.

I think this is your error.

Perhaps, I had assumed your green curve was derived in
such a way that it included the effects of both velocity
and acceleration. If not, then there could be an error
in that too while I have been thinking it was accurate.

I suppose you want to assume that the brightness curve of the pulsar can
be inferred from the bunching of the pulses...since their energy should
not
change even if their widths DO.

We can make that assumption but it isn't testable as
it will be smaller than can be measured so I treat
it as an output from the program.

If you would like to produce such a curve I will try to match it...the
I'll worry about getting the red curve right.

No, fix the maths for the red curve and match that to
the velocity curve which we do have, I'm not worried
about the brightness at all and your code for that is
already OK.

The red curve is OK. You are confusing the velocity curve with the
acceleration
curve.

No, I think you are confusing my comments about velocity.
Bear in mind there is a big difference between the actual
velocity shown by your blue curve and what you call the
"willusory" value shown by the red curve. That depends on
the true values of both radial speed and radial
acceleration.

Cool. The last several weeks of discussion will have been
totally pointless if you don't and I have better things to
do with my time (as the wife keeps telling me).

(mine is away at present. I think I need a new one.)

Nearly 30 years now and I'm very happy with mine

Some people are lucky.....

I've had about ten...they're all mad as far as I can see....different
brains
entirely...

Mine just read the above over my shoulder and left with
a grin.

You could have written your own program by now. ..and found the answer.

I had a look and I could, the only hard bit is doing
the velocity and acceleration equations for elliptical
orbits and the tedious stuff of the GUI and converting
units. However, I doubt you would trust something I
wrote anyway.

That's why I use Vbasic. It's very user friendly and quite fast.....or it
WAS
till the latest version... which is no better than Java.

EJS really cuts the work down.

Skype is becoming very popular. I don't know why the various computer
phone
companies don't try to standardise so they can be mutually compatible.

SIP is an international standard that they all should use. Skype
keeps their method proprietary to establish dominance - bad for
us but good for business. I needed a router anyway when I went
to ADSL but it's annoying I bought it a year or two before Skype
became so universal.

George