| Speaker: | Cristian Barrera-Hinojosa (Durham U) |
|---|---|
| Title: | Exploring the vector modes of ΛCDM with general-relativistic simulations |
| Date (JST): | Thu, Dec 03, 2020, 16:00 - 17:00 |
| Place: | Zoom |
| Related File: | 2613.pdf |
| Abstract: | In this talk, I will discuss results on the dark matter vorticity field and the gravitomagnetic (frame-dragging) potential in ΛCDM, obtained from a high-resolution, general-relativistic N-body simulation performed with the recently-developed GRAMSES code. In particular, I will discuss how the shape and evolution of the vorticity power spectrum can be parametrised on large sub-horizon scales as well as into the nonlinear regime. I will then focus on exploring the behaviour of the gravitomagnetic potential in dark matter haloes of different masses, as well as the corresponding gravitomagnetic force acting on such structures. A comparison with the scalar (standard) gravitational potential will be discussed to assess the magnitude of the new effects. |
