Mohammad Ansari

Department of Physics, K.N. Toosi University of Technology, Tehran, Iran;

School of Astronomy, Institute for Research in Fundamental Sciences (IPM)

The nearest neighbor statistics in cosmology

 

Abstract: The statistic of matter in non-linear regimes is non-Gaussian, and the two-point correlation function doesn’t have all the information in it. Introducing innovative quantities, along with the two-point correlation function is useful for non-linear regimes. In this direction we introduce the nearest neighbor statistics and show how this function could help us to constrain parameters and cosmological models (such as neutrino mass and fuzzy dark matter). In addition, for the first time we introduce the angle between nearest neighbors to cosmology. Noting that this quantity depends on angles and geometry (and not distances), exploring it may open up new horizons to cosmology. For example, by this quantity we can classify different cosmic web finder approaches.

یکشنبه16 اردیبهشت 1403، ساعت 17:00

Sunday 5 May 2024 – 17:00 Tehran Time

Hybrid Seminar

دانشکده فیزیک – طبقه اول – کلاس فیزیک 3 Physics Department – first floor – Room Physics 3  / 

https://vc.sharif.edu/ch/cosmology

گزینه ورود به صورت مهمان – Enter as a Guest