RICAP-22 Roma International Conference on AstroParticle Physics

Session

Multimessengers

7 Sept 2022, 14:00

Aula Amaldi (Physics Department, University "La Sapienza", Roma, Italy)

Conveners

Multimessengers: 1

• Marica Branchesi (Istituto Nazionale di Fisica Nucleare)
• Anna Franckowiak (Ruhr-Universität Bochum)

74. Gravitational-Wave and Gamma-Ray Burst Joint Observations

Prof. Francesco Pannarale (Sapienza – University of Rome & INFN Rome)

07/09/2022, 14:00

I review the results of searches for gravitational-wave signals associated with gamma-ray bursts carried out in the first three observing runs of Advanced LIGO and Advanced Virgo. During this stretch of time, the spectacular GW170817-GRB 170817A event was observed, and constraints on the low-luminosity short gamma-ray burst population were placed. In the coming years, an increase in...

31. Neural networks for gravitational-wave trigger selection in single-detector periods

Agata Trovato (Istituto Nazionale di Fisica Nucleare)

07/09/2022, 14:20

The search for gravitational waves transient sources with LIGO and Virgo is mainly limited by non-Gaussian transient noise artefacts coming from a wide variety of provenances, such as seismic, acoustic and electromagnetic disturbances. The contamination by these "instrumental glitches" can be partially mitigated by requesting temporal coincidence in two or more detectors as their accidental...

41. ELECTROMAGNETIC AND GRAVITATIONAL RADIATION DURING THE UNUSUAL FLASH IN THE ACTIVE CORE OF THE GALAXY 3C454. 3

Alexandr Volvach

07/09/2022, 14:40

Presents data analysis of long-term multi-frequency monitoring of the active galaxy nucleus in 3C 454.3 during unusual and prolonged flare, ongoing since the beginning of 2014 to 2020. The unique phenomenon may be due to a coincidence of the accretion disk (AD) plane of the Central supermassive black hole and the orbit of the companion at the time of precession of the Central body. Large and...

5. Detection prospects for multi-GeV neutrinos from collisionally heated GRBs

Angela Zegarelli (Istituto Nazionale di Fisica Nucleare)

07/09/2022, 15:00

Neutrinos with energies ranging from GeV to sub-TeV are expected to be produced in Gamma-Ray Bursts (GRBs) as a result of the dissipation of the jet kinetic energy through nuclear collisions occurring around or below the photosphere, where the jet is still optically thick to high-energy radiation. So far, the neutrino emission from the inelastic collisional model in GRBs has been poorly...

68. Searching for multi-messenger signals with the Pierre Auger Observatory

Eleonora Guido (Siegen Universität)

07/09/2022, 15:20

The Pierre Auger Observatory is the world’s largest experiment for the detection of ultra-high-energy (UHE) air showers, produced by particles with energies above ~$10^{18}$ eV. In addition to providing the most precise measurements of UHE cosmic rays properties, the Observatory exhibits also unprecedented sensitivities to UHE photons, neutrinos and neutrons, which makes it an excellent tool...

97. Neutrinos from core-collapse supernovae at KM3NeT

Meriem Bendahman

07/09/2022, 15:40

On behalf of the KM3NeT Collaboration

The SN1987A core-collapse supernova was the first extragalactic transient source observed through neutrinos. The detection of the 25 associated neutrinos by the Super-Kamiokande, IMB and Baksan experiments marked the beginning of neutrino astronomy. Since then, neutrino telescopes have not been able to make another observation due to the remoteness...

110. Exploiting synergies between neutrino telescopes for the next galactic core-collapse supernova

Sonia El Hedri (APC, CNRS)

07/09/2022, 16:00

The core collapse supernova SN1987A was the first extra-galactic transient source ob- served in neutrinos, and 25 events detected by neutrino telescopes in the epoch marked the begin- ning of neutrino astronomy. Neutrino telescopes have not been able to make another supernova observation due to the remoteness of the sources. It is therefore essential to optimize the detection channel of...