Ehsan Ebrahimian

Department of Physics, Sharif University of Technology

The mad halos, reasonable evidence for the Tidal Locking Theory

Abstract: Many previous studies have shown that the direction of the angular momentum of structures is aligned with their environment.  Some studies tried to explain this with the Tidal Torque Theory (TTT). The TTT is the accepted theory for explaining the origin of the angular momentum of structures. However, we suggested another mechanism that could change the angular momentum of the dark matter halos. This mechanism is called the Tidal Locking Theory (TLT). It is similar to the mechanism that locked the Moon to the Earth via tidal forces. We investigate the IllustrisTNG simulation to find evidence of the TLT and how it affects the spin alignment of the halos. We suggest that the mad halos, halos with high velocity, provide clear evidence of the TLT. Therefore, we recommend that to understand the spin-LSS alignment better, one must look at the halos’ speed and not at their masses.

 یکشنبه 10 مرداد 1400، ساعت 19:00

Sunday 1 August 2021 – 19:00 Tehran Time

اتاق سمینار مجازی –Virtual Seminar Room

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

گزینه ورود به صورت مهمان – Enter as a Guest