Astrophysics News & Events

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12 million CPU-hours awarded to our group

A computing proposal prepared by S. Gimeno-Soler, P. Cunha, I. Sengo and C. Herdeiro, and led by H. Olivares was awarded with 12 million CPU-hours at the supercomputer Mare Nostrum 5.
The project, titled "Exploring accretion and spacetime models for event-horizon-scale observations of low-luminosity active galactic nuclei", will explore new models of accretion flows and spacetime geometries for the targets of the Event Horizon Telescope using simulations as the one shown in the picture (Image credit: H. Olivares and P. Cunha).

Jet-like structures in low-mass binary neutron star merger remnants

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Speaker
Milton Ruiz (University of Valencia)
Event date
Venue
On-site: Room TBD
Event type

GW170817 and GRB 170817A provided direct evidence that binary neutron star (NSNS) mergers can produce short gamma-ray bursts (sGRBs). However, questions remain about the nature of the central engine.

The optical appearance of some regular compact objects

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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.

Beyond the Concordance Model with galaxy cluster mass profiles

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Speaker
Lorenzo Pizzuti (University of Milano-Biccoca)
Event date
Venue
On-site: Room TBD
Event type

Galaxy clusters are excellent natural laboratories to study the nature of gravity and test possible alternatives to the Concordance Model, at the edge between cosmology and astrophysics.