I was inspired by Magda's seminar this monday about the variability of css, gps or whatever. She said that variability is something like a hundret years. And then I thought: shouldn't it (the period) be corrected for the expansion of the universe since these objects happend to be so strongly redshifted ? Or maeybe this effect is negligible.
bartek
well, not completed, not even documented, but if anyone of you would like to use it to reconstruct cmb spectrum REALLY FAST (within miliseconds) - please try. http://coyote.ncac.torun.pl/~michalf/cmbrecon/cmbrecon.php
well - you can treat it as a preview of what is really about to happen. a fast cmb-spectrum reconstruction code. with quintessence (or whatever) included (soon also other scalar-tensor things). for generating grid: server-client architecture, quite smart reconstruction algorithms.... in case of interest/doubts/will to use - feel free to contact me. code is quite complete and usable.
michal frackowiak
ok, what's the catch ? and where is the code ?
and btw. how this works ?
On Mon, 17 Feb 2003, Michal Frackowiak wrote:
well, not completed, not even documented, but if anyone of you would like to use it to reconstruct cmb spectrum REALLY FAST (within miliseconds) - please try. http://coyote.ncac.torun.pl/~michalf/cmbrecon/cmbrecon.php
well - you can treat it as a preview of what is really about to happen. a fast cmb-spectrum reconstruction code. with quintessence (or whatever) included (soon also other scalar-tensor things). for generating grid: server-client architecture, quite smart reconstruction algorithms.... in case of interest/doubts/will to use - feel free to contact me. code is quite complete and usable.
michal frackowiak
I have the code - not publicly available yet, but soon it works as follows:
1. grid is produced and in nodes exact (well... cmbfast) cl spectrum is calculated 2. for every node some parametrisation of the spectrum is done (scaling, chebyshev coeficients etc.) 3. for given cosmo parms those parameters are interpolated and the spectrum is reconstructed.
quite simple. but faster than other interpolation methods (for gridded models). that is the main idea...
polarisation also possible, but not yet implemented. I can send you the code with the spectrum database if you wish.
Bartosz Lew wrote:
ok, what's the catch ? and where is the code ?
and btw. how this works ?
On Mon, 17 Feb 2003, Michal Frackowiak wrote:
well, not completed, not even documented, but if anyone of you would like to use it to reconstruct cmb spectrum REALLY FAST (within miliseconds) - please try. http://coyote.ncac.torun.pl/~michalf/cmbrecon/cmbrecon.php
well - you can treat it as a preview of what is really about to happen. a fast cmb-spectrum reconstruction code. with quintessence (or whatever) included (soon also other scalar-tensor things). for generating grid: server-client architecture, quite smart reconstruction algorithms.... in case of interest/doubts/will to use - feel free to contact me. code is quite complete and usable.
michal frackowiak
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The predicted quasar luminosity function calculated by integrating the time spent by a quasar in each luminosity (which I have shown) depends on redshift. When we want to calculate the age of the radio source (activity period) we need to know the redshift and we need to assume some Hubble constant. First we always calculate changes in the angular separation between some radio components (hot spots), but when we want to know the velocity of these changes and the age of the source we have to assume some cosmological parameters.
Magda
On Mon, 17 Feb 2003, Bartosz Lew wrote:
I was inspired by Magda's seminar this monday about the variability of css, gps or whatever. She said that variability is something like a hundret years. And then I thought: shouldn't it (the period) be corrected for the expansion of the universe since these objects happend to be so strongly redshifted ? Or maeybe this effect is negligible.
bartek
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Bartosz Lew -
Magdalena Kunert -
Michal Frackowiak