Attività del Dipartimento

Colloqui di Fisica

Optical/NIR follow-up observations of the counterpart of the gravitational wave event GW170817: the first evidence of kilonovae existence

Silvia Piranomonte

10-04-2018 - 15:00
AULA B - Via Della Vasca Navale 84


On August 17th 2017 the first electromagnetic counterpart of a gravitational wave (GW) event originated by the coalescence of a double neutron star system (GW 170817, Abbott et al. 2017) was finally observed. A world-wide extensive observing campaign was carried out to follow-up and study this source In this talk I will describe our unique spectroscopic dataset acquired with the VLT which allowed to characterize and identify the optical counterpart of GW 170817 as the first compelling example of a "kilonova", a transient source powered by radioactive decay of heavy elements resulting from the r-process nucleosynthesis of ejected neutron star matter. All the activities I will describe are expected to provide means and opportunities to all the European astronomical communities to have a leading role in the GW astronomy and Time Domain Astronomy.

org: MELONI Davide

Allegati: [Locandina]  


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