Inhomogeneous Cosmologies IV, Torun, Poland (2nd announcement)

During 14-19 July 2019 we are gathering experts in inhomogeneous cosmology for a small workshop of about 30 participants at Nicolaus Copernicus University in Torun, the town where Copernicus was born. We wish to map out the most promising directions for analytical, numerical and observational investigations aimed to take into account both structure formation and cosmological expansion within the constraints of general relativity.

Can we clarify the physics present in the relativistic cosmology software now being developed? Are the calculations artificially constrained or are they fully relativistic? Can we achieve accurate postdiction of cosmological observations and follow up by making predictions for the upcoming decade of new major survey projects? We expect vigorous, constructive debate between “one-percenters” and “order-unity” proponents, and practical hands-on sessions of free-licensed inhomogeneous cosmology software packages.

Feel free to redistribute this announcement. The deadline for early registration is **3 May 2019**.

More info: https://cosmo.torun.pl/CosmoTorun19

Contact: cosmotorun19 at cosmo.torun.pl

Scientific organising committee: Boud Roukema, Eloisa Bentivegna, Krzysztof Bolejko, Thomas Buchert, Mikolaj Korzynski, Hayley Macpherson, Jan Ostrowski, Sebastian Szybka, Eleonora Villa, David Wiltshire

Local organising committee: Boud Roukema, Justyna Cembrzynska, Agnieszka Gorska-Pukownik, Justyna Borkowska, Matteo Cinus, Marius Peper

Topics will include:
* exact cosmological solutions of the Einstein equations
* averaging and backreaction in cosmology
* numerical cosmological relativity
* observational tests

Inhomogeneous Cosmologies IV, Torun, Poland

During 14-19 July 2019 we are gathering experts in inhomogeneous cosmology for a small workshop of about 30 participants at Nicolaus Copernicus University in Torun, the town where Copernicus was born. We wish to map out the most promising directions for analytical, numerical and observational investigations aimed to take into account both structure formation and cosmological expansion within the constraints of general relativity. Can we clarify the physics present in the relativistic cosmology software now being developed? Are the calculations artificially constrained or are they fully relativistic? Can we achieve accurate postdiction of cosmological observations and follow up by making predictions for the upcoming decade of new major survey projects? We expect vigorous, constructive debate between “one-percenters” and “order-unity” proponents, and practical hands-on sessions of free-licensed inhomogeneous cosmology software packages.

Feel free to redistribute this announcement. Check the CosmoTorun19 website or subscribe to the inhom newsletter to know when registration is open.

More info: https://cosmo.torun.pl/CosmoTorun19
Newsletter ‘inhom’: https://cosmo.torun.pl/mailman/listinfo/inhom
Contact: cosmotorun19 at cosmo.torun.pl

Organising committee: Boud Roukema, Eloisa Bentivegna, Krzysztof Bolejko, Thomas Buchert, Mikolaj Korzynski, Hayley Macpherson, Jan Ostrowski, Sebastian Szybka, Eleonora Villa, David Wiltshire

Topics will include:
* exact cosmological solutions of the Einstein equations
* averaging and backreaction in cosmology
* numerical cosmological relativity
* observational tests

Postdoctoral positions in cosmology at Nicolaus Copernicus University

The Faculty of Physics, Astronomy and Informatics of the Nicolaus
Copernicus University invites applications for 12- to 24-month
postdoctoral positions (adiunkt naukowy) in theoretical/observational
inhomogeneous cosmology. A substantial fraction of the successful
candidates’ research work will be expected to focus on the possible
links between inhomogeneous cosmology and dark matter, but they will
also be expected to develop their own original cosmology research
programs. Candidates with solid experience in LCDM N-body cosmology
simulations and willing to work on numerical relativistic (standard
general relativity) cosmology simulations will be strongly considered.

Formal advertisement and how to apply: https://euraxess.ec.europa.eu/jobs/368908

Informal enquiries: boud astro.uni.torun.pl

Inhomogeneous Cosmologies (2nd announcement), Torun, Poland

During 2-7 July 2017 we are gathering experts in inhomogeneous cosmology for a small workshop of about 30 participants at Nicolaus Copernicus University in Torun, the town where Copernicus was born. We wish to map out the most promising directions for analytical, numerical and observational investigations aimed to take into account both structure formation and cosmological expansion within the constraints of general relativity. A key motivating theme will be to discuss the claim, already investigated in numerous peer-reviewed papers, that “dark energy” as inferred from observations is an artefact of assuming an average Friedmannian expansion. New techniques in numerical relativity are beginning to open new perspectives on these questions. We expect talks on the latest developments, vigorous, constructive debate between “one-percenters” and “order-unity” proponents, and practical hands-on tutorials of the Einstein Toolkit and other free-licensed inhomogeneous cosmology software packages. The workshop sessions will start on the morning of Mon 3 July and continue to late afternoon Fri 7 July.

Due to the limited number of places available, registration by the early registration deadline of 7 April 2017, including a draft abstract, is strongly recommended. If places remain available, late registration will remain open until the late registration deadline of 9 June 2017 – see http://cosmo.torun.pl/CosmoTorun17 for details.

Contact: cosmotorun17 at cosmo.torun.pl

Organising committee: Boud Roukema, Eloisa Bentivegna, Krzysztof Bolejko, Thomas Buchert, Mikolaj Korzynski, Hayley MacPherson, Jan Ostrowski, Sebastian Szybka, David Wiltshire

Topics will include:

* exact cosmological solutions of the Einstein equations
* averaging and backreaction in cosmology
* numerical cosmological relativity
* observational tests

Inhomogeneous Cosmologies (1st announcement), Torun, Poland

During 2-7 July 2017 we are gathering experts in inhomogeneous cosmology for a small workshop of about 30 participants at Nicolaus Copernicus University in Torun, the town where Copernicus was born. We wish to map out the most promising directions for analytical, numerical and observational investigations aimed to take into account both structure formation and cosmological expansion within the constraints of general relativity. A key motivating theme will be to discuss the claim, already investigated in numerous peer-reviewed papers, that “dark energy” as inferred from observations is an artefact of assuming an average Friedmannian expansion. New techniques in numerical relativity are beginning to open new perspectives on these questions. We expect vigorous, constructive debate between “one-percenters” and “order-unity” proponents, and practical hands-on sessions of free-licensed inhomogeneous cosmology
software packages.

We will post a formal announcement and registration details by early 2017 at http://cosmo.torun.pl/CosmoTorun17.

Contact: cosmotorun17 at cosmo.torun.pl

Organising committee: Boud Roukema, Thomas Buchert, Krzysztof Bolejko, Mikolaj Korzynski, Jan Ostrowski, Sebastian Szybka, David Wiltshire