Conveners
Neutrinos in the multi-messenger era: Monday block 1
- Dafne Guetta (Ariel University, Ariel)
- Silvia Celli (Sapienza University & INFN-Roma1)
Neutrinos in the multi-messenger era: Monday block 2
- Dafne Guetta (Ariel University, Ariel)
- Silvia Celli (Sapienza University & INFN-Roma1)
Neutrinos in the multi-messenger era: Tuesday block 1
- Silvia Celli (Sapienza University & INFN-Roma1)
- Dafne Guetta (Ariel University, Ariel)
Description
Neutrino astronomy has witnessed huge progresses in recent years thanks to a wide variety of observations concerning the emergence of high-energy emissions beyond the well-known all-sky diffuse, including the Galactic flux as well as with the hot spot in correspondence of the disk-obscure AGN NGC1068. At the same time, realtime neutrino alerts are regularly followed up in their electromagnetic counterparts, providing new interesting results on the transient and variable sky. This session will report on the latest results in neutrino astronomy and its multi-messenger connections including gravitational waves, with the aim of providing a clear understanding of the state of the art and fostering the collaboration among experiments.
The IceCube neutrino observatory recently found an excess of TeV neutrinos at a significance of 4.2 σ associated to NGC 1068, one of the most well known nearby Seyfert galaxies.
NGC 1068 was already known as a gamma-ray emitter in the GeV band, whereas only upper limits in the flux were found in the TeV band.
Interestingly, the neutrino flux is about two orders of magnitude larger than the...
The production mechanism of astrophysical high-energy neutrinos is not yet understood. A common assumption is that beamed relativistic outflows (jets) driven by accreting black holes are needed to accelerate particles to such high energies to produce high-energy neutrinos. Indeed, the first astrophysical high-energy neutrino source candidate identified by IceCube at a significance level of >3σ...
With the proliferation new and more sensitive detector technologies, coincident observation of triggers for two or more messengers (gravitational-waves, electromagnetic, neutrinos) will become increasingly frequent. I will discuss implications and unmet needs for the observational-data rich future when low-latency subthreshold triggers will be publicly available for several messenger types and...
We estimate the neutrino flux from different kinds of galactic sources and compare it with the recently diffuse neutrino flux detected by IceCube. We find that the flux from these sources may contribute to ∼20% of the IceCube neutrino flux. Most of the sources selected in this work populate the southern hemisphere, therefore a detector like KM3NeT could help in resolving the sources out of the...
Over the last decade, the scenario of choked jets embedded in core-collapse supernovae (CCSNe) has attracted careful attention. The extended stellar envelopes of red supergiant (RSG) and blue supergiant (BSG) stars, both progenitors of Type II SNe, may constitute a challenge to the launch of a powerful jet able to burrow through their envelopes. As the jet carves its way through them, it...
Many stripped-envelope supernovae (SNe) present a signature of high-velocity material responsible for broad absorption lines in the observed spectrum. These include SNe associated with long gamma-ray bursts (LGRBs), low-luminosity GRBs (llGRBs), and SNe not associated with GRBs. It was recently suggested that this high-velocity material originates from a cocoon driven by a relativistic jet. In...
Supernova (SN) 2023ixf in M101 is the closest SN explosion observed in the last decade. Therefore, it is a suitable test bed to study the role of jets in powering the SN ejecta. With this aim, we explored the idea that high-energy neutrinos could be produced during the interaction between the jets and the intense radiation field produced in the SN explosion and eventually be observed by the...
Astronomy has entered a new era of multi-messenger observation with the early detection of neutrinos from SN1987A and the recent discovery of gravitational waves. Neutrinos serve as an effective detection channel for various astrophysical sources. This research focused on neutrino propagation through multiple media, including central engines within gamma-ray bursts (GRBs) and environments...
The high-energy neutrino observatory ANTARES concluded its 15-year observational campaign in February 2022. Among is primary goals was the identification of the sources of cosmic neutrinos.
Throughout its operational lifespan, ANTARES conducted multiple searches aimed at detecting steady and transient neutrino sources using different methods, such as inspecting for possible neutrino...
KM3NeT is a multi-site underwater detector, designed to detect and study cosmic neutrinos and their sources in the Universe, and improve the measurement of the neutrino oscillation parameters. Two neutrino telescopes are under construction in the Mediterranean Sea, ARCA (Portopalo di Capo Passero, Italy) and ORCA (Toulon, France), optimized respectively for neutrinos in the energy range of 1...
KM3NeT is the next generation deep-sea neutrino telescopes currently under construction in the Mediterranean Sea. It is composed of two water-Cherenkov neutrino detectors: ARCA and ORCA, located at two sites, south-est of Portopalo di Capo Passero (Italy) and close to Toulon (France), respectively. One of the main scientific goals of KM3NeT is to observe cosmic neutrinos and investigate their...
KM3NeT is a deep-sea research infrastructure comprising two water-Cherenkov neutrino telescopes being constructed in the Mediterranean Sea: ARCA in Italy, aiming at identifying and studying TeV-PeV astrophysical neutrino sources, and ORCA in France, designed to study the intrinsic properties of neutrinos in the few-GeV range. KM3NeT is also able to detect MeV-scale neutrinos expected at...
