[astroseminar at Sapienza] 24/11/2017 at 13:00: Jorge Rueda

[Elia Battistelli]

Title: Some considerations on short gamma-ray bursts, their associated 
kilonovae and the physics of neutron star binary mergers
Speaker:  Jorge Rueda
Institution: ICRA and ICRANet
Date: Monday, 24 November 2017
Time: 1:00pm
Location: Aula Rasetti, Marconi Building, Dept. of Physics, Sapienza 
University

Abstract:
Following our identification of the first neutron star binary merger 
leading to a black hole in GRB 090510A (Ruffini et al. 2016), we 
indicate the striking coincidence with the X-ray observations GRB 
130613B (Ruffini et al. GCN 14913, 2017), which has become the first 
typical example of a neutron star merger with associated  kilonova 
observed in the optical and in the infrared (Tanvir et al. 2013; Berger 
et al. 2013a; Fan et al. 2013). Observations of the optical emission of 
GRB 090510A have been recovered and here analyzed within this context. 
We also show ongoing work on the role of the conservation of energy, 
angular momentum and baryon number in the determination of the neutron 
star critical mass and so on the determination of the final remnant 
configuration left by a neutron star binary merger.

Questo seminario fa parte di una serie di incontri tipo "brown bag 
lunch”. Seguono maggiori dettagli a tal proposito.

The "brown bag lunch" was instituted, in frugal time, at princeton in 
the Joseph Henry laboratory. They were encounters occurring in John 
Archibald Wheeler office:  lasting less than one hour and covering, 
every week, the latest results and possibly illustrated by new visitors. 
Both the theory group around Wheeler and the experimental group around 
Bob Dicke where participating. Later, as the topics became more 
favourable, they were extended to the astrophysics department (Karl 
Schwarzschild and Jerry Ostriker) and to the IAS (Freeman Dyson). The 
creation  of a sumptuous cafeteria at the IAS did create a more 
comfortable setting: these weekly meetings did not surpass the positive 
effects of the initial more frugal meetings. The transfer to Caltech of 
Princeton faculties including Kip Thorne permitted the prosecution of 
this tradition in California, equaly successfully. Since our groups have 
become larger in la Sapienza we (Paolo de Bernardis, cosmology, Fulvio 
Ricci, gravitational waves, and Remo Ruffini, gravitationally collapsed 
objects) have decided to start the "brown bag lunch" in relativistic 
astrophysics and cosmology in the physics department. The first meeting 
will be held on Friday 24 November in aula Rasetti at 1 pm and the topic 
will be the on equations of state of binary neutron-star merger.
Everyone interested is welcome to partecipate. Please bring your lunch. 
american coffee will be offered.