November 2012 - Cosmo-torun

The Bohdan Paczynski Memorial Colloquium (fwd) - pierwszy wykład 16.11.2012 (fwd)
by Boud Roukema 07 Nov '12

07 Nov '12

> Szanowni Panstwo, > > Centrum Astronomiczne im. M. Kopernika PAN w Warszawie otwiera serię wykładów "The Bohdan Paczyński Memorial Colloquium". > Szczegoly na stronie: www.camk.edu.pl/PaczynskiColloquium > > Zapraszamy na pierwszy wykład, który odbędzie się 16 listopada o 15:00, > w Warszawie, ul. Bartycka 18: > > Rashid Sunyaev > > Max-Planck Institute for Astrophysics, Space Research Institute, Moscow, > Institute for Advanced Study, Princeton > > Hot Intergalactic Gas in Clusters of Galaxies,Cosmic Microwave Background Radiation and Cosmology > > Marek Abramowicz > Joanna Mikolajewska > > -------------------------------------------------------------------- > Prof. Joanna Mikolajewska Phone: +48 22 3296134 > N. Copernicus Astronomical Center Fax: +48 22 8410046 > Bartycka 18 E-mail: mikolaj camk.edu.pl > 00-716 Warszawa, Poland Web: www.camk.edu.pl > -------------------------------------------------------------------- _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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The Bohdan Paczynski Memorial Colloquium (fwd) - pierwszy wykład 16.11.2012
by Paweł Grochowalski 06 Nov '12

06 Nov '12

Szanowni Panstwo, Centrum Astronomiczne im. M. Kopernika PAN w Warszawie otwiera serię wykładów "The Bohdan Paczyński Memorial Colloquium". Szczegoly na stronie: www.camk.edu.pl/PaczynskiColloquium Zapraszamy na pierwszy wykład, który odbędzie się 16 listopada o 15:00, w Warszawie, ul. Bartycka 18: *Rashid Sunyaev* Max-Planck Institute for Astrophysics, Space Research Institute, Moscow, Institute for Advanced Study, Princeton *Hot Intergalactic Gas in Clusters of Galaxies,Cosmic Microwave Background Radiation and Cosmology* Marek Abramowicz Joanna Mikolajewska -------------------------------------------------------------------- Prof. Joanna Mikolajewska Phone: +48 22 3296134 N. Copernicus Astronomical Center Fax: +48 22 8410046 Bartycka 18 E-mail: mikolaj(a)camk.edu.pl 00-716 Warszawa, Poland Web: www.camk.edu.pl -------------------------------------------------------------------- _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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Newtonian N-body wrong in EdS relativistic 2nd order perturbation theory above 10 Mpc
by Boud Roukema 04 Nov '12

04 Nov '12

hi everyone http://arxiv.org/abs/1207.2035 Newtonian versus relativistic cosmology Authors: Samuel F. Flender, Dominik J. Schwarz Abstract: We show how the relativistic matter and velocity power spectra behave in different gauges. We construct a new gauge where both spectra coincide with Newtonian theory on all scales. However, in this gauge there are geometric quantities present which do not exist in Newtonian theory, for example the local variation of the Hubble parameter. Comparing this quantity to second order Newtonian quantities, we find that Newtonian theory is wrong on scales larger than 10 Mpc. This undermines the reliability of Newtonian cosmological N-body simulations on these scales. What's surprising is that this is still only *perturbation* theory, it's not fully relativistic, if I understand the paper correctly. Fully relativistic calculations still remain to be done. pozdr boud _______________________________________________ Cosmo-torun mailing list Cosmo-torun(a)cosmo.torun.pl http://cosmo.torun.pl/mailman/listinfo/cosmo-torun

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