High Energy Physics News & Events

Enter words that may appear in the title

The optical appearance of some regular compact objects

Gr@v Seminars - Banner
Speaker
Mercè Guerrero (CIDMA, University of Aveiro)
Event date
Venue
On-site: Sala Sousa Pinto
Event type
The significance of multi-ring images in the optical appearance of spherically symmetric compact objects is discussed. Such images are produced by an optically and geometrically thin accretion disk illuminating the object.

Numerical evolutions with the Kadath library: Application to the Schwarzschild black hole and Teukolsky gravitational waves

Gr@v Seminars - Banner
Speaker
Jordan Nicoules (CIDMA, University of Aveiro)
Event date
Venue
On-site: Room TBD
Event type

Numerical Relativity is a key tool for the study of strong-field gravity. I will present a new evolution code, based on the Kadath library. It relies on multidomain spectral methods for the space discretization, and explicit time integration schemes.

From Hubble to Bubble - gravitational waves from phase transitions after inflation

Gr@v Seminars - Banner
Speaker
Andreas Mantziris (University of Porto)
Event date
Venue
Hybrid: Sala Sousa Pinto and Zoom
Event type

The prospect of a stochastic gravitational wave (GW) background from the primordial universe offers a promising new window for cosmology and fundamental physics.

Numerical evolution of well-posed field theories with anisotropic scaling

Gr@v Seminars - Banner
Speaker
Marcelo Rubio (SISSA, Trieste)
Event date
Venue
On-site: Room TBD
Event type
Dynamical equations exhibiting an anisotropic scaling between space 
and time admit a dispersive nature, as they contain higher-order spatial derivatives, 
but remain second order in time.