Lecturer: Dr. Martin Feix Affiliation: Israel Institute of Technology - Technion Abstract: Large-scale peculiar motion modulates the observed luminosity distribution of galaxies. Using galaxy redshift surveys, this can be harnessed to obtain bounds on peculiar velocity moments, the amplitude of the linear matter power spectrum, and the growth rate of density perturbations. In my talk, I will discuss this approach and its recent application to about half a million SDSS galaxies at z ~ 0.1. The obtained results agree well with the predictions of the LCDM model and are consistent with the reported ~ 1% zero-point tilt in the SDSS photometry. Additional details of the upcoming Astrophysics' seminars can be found on the following link. ‏האירוע הזה כולל שיחת וידאו ב-Google Hangouts. הצטרף: https://hangouts.google.com/hangouts/_/mail.huji.ac.il/astrophysics?hceid=bWFpbC5odWppLmFjLmlsX2c0czhydDlpcmhwZzRvdGNybWIzZGFqcjdvQGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20.uqo7m2v9kfu3oed4okto3rjqtc&hs=121