Cosmo-torun June 2003

cosmo-torun@cosmo.torun.pl

2 participants
4 discussions

open zwicky proposal - deadline Mon 7 July 2003
by boud 30 Jun '03

30 Jun '03

Hi everyone, I think people have had enough time to see how wiki pages work internally http://adjani.astro.uni.torun.pl:9673/zwicky/ and how they work externally where anybody at all with internet access can modify pages http://pl.wikipedia.org So I think it's time to have some open zwiki (or other wiki software) pages on adjani for organising things like: - cosmic topology research - cosmic standard ruler stuff - OCRA coordination - other research projects - cosmo/extragalactic session at http://www.pta.edu.pl/zjazd - other conferences where there's no point creating a new password for everyone who might want to make a comment or change something. So this is my proposal. Please provide comments, a modified, improved version of the proposal, or if you really think this goes against the purpose of why we are here - observational cosmology research - then you may *block* the proposal, but in that case you take responsibility for having blocked. (This is the style of consensus decision-making, for anyone who forgot...) pozdrawiam boud ********************************************************************** PROPOSAL for open (z)wiki pages. DECISION DEADLINE Mon 7 July 2003 It is proposed to have some wiki pages, separate from the present pages http://adjani.astro.uni.torun.pl:9673/zwicky/ For example, with a name http://adjani.astro.uni.torun.pl:9673/open/ to make it clear that it's an open zwiki. The purpose will be to organise things like - cosmic topology research - cosmic standard ruler stuff - OCRA coordination - other research projects - cosmo/extragalactic session at http://www.pta.edu.pl/zjazd - other conferences where cosmologists (faculty, postdocs, students) from outside of TCfA will be able to contribute to pages, update them, etc. Although hypothetically this means that web surfers might write rubbish on the pages, in practice there will hopefully be enough real cosmology users on the pages that any rubbish will quickly be removed by the real users. The example of http://pl.wikipedia.org shows that this is possible and practical, with good results. **********************************************************************

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H0=75km/s/Mpc
by Andrzej Marecki 12 Jun '03

12 Jun '03

----- Forwarded message from send mail ONLY to astro-ph ----- [...] Paper: astro-ph/0306216 From: L.V.E. Koopmans <leon(a)astro.rug.nl> Date: Wed, 11 Jun 2003 01:59:39 GMT (350kb) Title: The Hubble Constant from the Gravitational Lens B1608+656 Authors: L.V.E. Koopmans (Caltech/STScI), T. Treu (Caltech), C.D. Fassnacht (UC Davis), R.D. Blandford (Caltech), G. Surpi (Caltech) Comments: 16 pages, 6 figures, 5 tables; submitted to ApJ \\ We present a refined gravitational lens model of the four-image lens system B1608+656 based on new and improved observational constraints: [...] A combined gravitational-lens and stellar dynamical analysis leads to a value of the Hubble Constant of H_0=75(+7/-6) km/s/Mpc (68 percent CL; Omega_m=0.3, Omega_Lambda=0.7. [...] ----- End of forwarded message from send mail ONLY to astro-ph ----- It's important to note that originally the same group claimed that H0 might be as low as... 61 km/s/Mpc, see: Fassnacht et al. (2002) ApJ, 581, 823 -- Andrzej

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unofficial unofficial grant results :(
by Boud Roukema 10 Jun '03

10 Jun '03

Hi everyone (on the grant proposal), The unofficial unofficial grants results are negative, sorry. :( The official unofficial results should be found as Konkurs XXV here within a few days: http://www.astrouw.edu.pl/~kst/konkursy.html And the official official results probably within 3-4 weeks. i'll be in Blois next week: http://blois.in2p3.fr/2003/pages/inform2.html but in July and August i'll be more or less in Toruń/Piwnice, though probably working from home more often than from my office. i'm not eager to do the paperwork again, but i guess the funding arithmetic can be the same, we only need to change the scientific plan and translate it to po polsku. IMHO, it's probably not worth trying again in topology, i think we should consider a plan which is more or less: ArFus - galaxy formation modelling + SMBH merger models for inducing AGN formation => RLAGN birth, youth and death observational (phenomenological) population constraints Nothing will stop us doing topology anyway, and this sort of work is something i think we should do anyway - it's the obvious way of combining our best observational and theoretical experience on a subject where it is certain that the objects of interest exist! The difficult question is how Bartek can fit into this. Bartek: any ideas? How about something like the reionisation epoch, around z=10-20? Since WMAP, people are coming up with all sorts of stuff on this. Hmmm... How about predictions for SKA? http://www.skatelescope.org/ That should find star-forming galaxies at redshifts anywhere around z=5-20, and SMBH and AGN formation around then should certainly be affected by when and how reionisation happened, making the link with RLAGN evolution modelling. Anyway, please say what you think, is it realistic to do this during July - including Polish translation etc etc - when everyone would rather be doing theoretical cosmology in the warm sunshine outside? pozd boud

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PTA wrzesnia - can we have a cosmo session?
by boud 10 Jun '03

10 Jun '03

Cześć, Would it be possible for the cosmologists in Poland to organise a session during the PTA in September? Since many of us may be attending anyway, we might as well do this in an organised and open way rather than just as a random meeting among friends who already know each other... My idea would be to use the mailing list cosmo-pl(a)astro.uni.torun.pl so that everybody from Toruń, Warszawa, Kraków and other cosmologists with Polish connections can coordinate, decide on a programme, etc. I would be happy to facilitate (moderować) the discussions. I guess the questions to the LKO would be: (1) How much time can we have in total? half-a-day? a few hours? (2) Would a meeting in the full session be best, or would a parallel session be better? But they would have to evolve depending on how much interest there is to Polish cosmologists. For the moment I'm only cc-ing this to cosmo-torun, so that we have some "local" coordination first, before PL level coordination. I'm not yet a member of the PTA, but of course I would be happy to become a member. pozdrawiam Boud PS: Is there an http: reference to the meeting details?

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Cosmo-torun June 2003