Second Gravi-Gamma Workshop

Session

Multi-messenger science potential with current detectors

Day 1

23 Jun 2021, 16:00

Conveners

Multi-messenger science potential with current detectors: Multi-messenger science potential with current detectors

• Helios Vocca (PG)

19. The kilonova - short GRB connection in the Multi-Messenger era

Paolo D'Avanzo (INAF - Osservatorio Astronomico di Brera)

23/06/2021, 16:05

Invited

The spectacular detection of the first electromagnetic counterpart of a gravitational wave event detected by the LIGO/Virgo interferometers and originated by the coalescence of a double neutron star system (GW 170817) marked the dawn of a new era for astronomy. The short GRB 170817A associated to the GW event provided the long-sought evidence that at least a fraction of short GRBs are...

10. Supernova explosions in the Multi-Messenger era

Massimo Della Valle (Capodimonte Observatory - INAF, Naples)

23/06/2021, 16:30

Invited

I will briefly review some of the observational facts of Supernovae from the perspective of multi-messenger astronomy, such as neutrino and GW emissions.

18. Fermi-GBM GRBs with characteristics similar to GRB 170817A

Andreas von Kienlin (MPE)

23/06/2021, 16:55

Invited

We present a search for gamma-ray bursts in the Fermi-GBM 10 yr catalog that show similar characteristics to GRB 170817A, the first electromagnetic counterpart to a GRB identified as a binary neutron star (BNS) merger via gravitational wave observations. Our search is focused on a nonthermal pulse, followed by a thermal component, as observed for GRB 170817A. We employ search methods based on...

8. ENGRAVE/GRAWITA in the Multi-Messenger era.

Enrico Cappellaro (OAPD - INAF)

23/06/2021, 17:20

Invited

The search and study of the electromagnetic counterparts of gravitational wave signals requires the collaborative efforts of astrophysical researchers with different expertises and extending over the full range of the electromagnetic spectrum. This motivated the spontaneous constitution of GRAWITA, the GW INAF team, that, since the very beginning, was ready to react to alerts of LIGO-VIRGO...

13. Was GW190814 a Black Hole ‒ Strange Quark Star system?

Ignazio Bombaci (PI)

23/06/2021, 17:45

Invited

In this talk I discuss the possibility that the low mass (2.50 ‒ 2.67 M⊙) companion of the 23 M⊙ black hole in the binary merger which produced GW190814 was a strange quark star. This possibility is viable if two families of compact stars, viz., “normal” neutron stars and strange quark stars, can coexist in nature, and neutron stars can get converted into strange quark stars.
The scenario...

21. Gamma-Ray Bursts and magnetars in the multi-messenger era

Maria Grazia Bernardini (INAF - Osservatorio Astronomico di Brera)

23/06/2021, 18:10

Invited

Newly-born millisecond magnetars are competing with black holes as source of the gamma-ray burst (GRB) power, mainly with their rotational energy reservoir. Since the GRB central engine remains hidden from direct electromagnetic observations, we discuss how the combined information provided by both the electromagnetic and gravitational signal are the most promising way to unveil its nature....

17. Recent results from LIGO and Virgo searches of continuous gravitational waves

Cristiano Palomba (ROMA1)

23/06/2021, 18:35

Invited

Continuous gravitational waves (CWs) have not been detected so far, but their emission is expected from various astrophysical systems, like spinning neutron stars, if asymmetric with respect to their rotation axis, and clouds of ultra-light bosons that could form around Kerr black holes as a consequence of superradiance. In this talk I will report some of the most recent results obtained in...