cosmic flows

Cosmic Flows: Myth, Reality, and Prospects

2011 December, 18

a Research Workshop of the Lewiner Institute for Theoretical Physics

Observations of peculiar motions of galaxies are our only direct probe of the three dimensional distribution of the underlying mass density in the local universe. The great potential of these observations in constraining models for structure formation has not yet been fully realized. Despite the impressive progress made in the field, disagreements remain between different methods of analysis. This workshop will discuss the limitations of the observational data and relevant methods of analysis in great detail. The role of future observations of large scale structure as well as high precision measurements of proper motions of nearby galaxies will also be discussed.

Specific topics to be discussed will include:

* Current catalogues of observational data of distance indicators
* Methods for extracting peculiar velocities from distance indicator measurements
* Methods for predicting large scale velocity fields from redshift surveys: linear and nonlinear (e.g., least action) methods
* Comparison between predicted and directly observed peculiar velocities: implications for cosmological parameters and the biasing relation
* The reconstruction of the nearby density and velocity fields
* Constrained simulations from peculiar velocities
* Statistical measures of peculiar velocities
* Individual moments of peculiar velocities
* Dynamics of the Local Group of galaxies:
- nonlinear reconstruction of nearby galaxy orbits
- prediction of individual nearby galaxy masses
* Indirect effects of peculiar velocities: redshift distortions
* Constraining models for structure formation in both DE-models and non-standard gravity scenarios
* Future surveys and prospects


Adi Nusser (Technion, local)
Enzo Branchini (Rome University)
Marc Davis (UC Berkeley)
Yehuda Hoffman (Hebrew University)
Karen Masters (University of Portsmouth)
Christopher Springob (Australian Astronomical Observatory)


Liz Yodim: This email address is being protected from spambots. You need JavaScript enabled to view it.


  • Technion Department of Physics
    Haifa, Israel


  • 972-4-829-2831
  • This email address is being protected from spambots. You need JavaScript enabled to view it.


Follow Us