The origin of the highest-energy cosmic rays continues to puzzle scientists. The data collected over the past 20 years by the Pierre Auger Observatory and the Telescope Array indicate the presence of anisotropy in their arrival directions, suggesting extragalactic astrophysical sources. However, the nature of these sources remains unsolved. This study aims to assess two potential models of...
Core collapse supernovae are the most energetic explosions in the modern
Universe and, because of their properties, they are considered a potential source of detectable gravitational waveforms for long time. The main obstacles to their detection are the weakness of the signal and its complexity, which cannot be modelled, making almost impossible applying matched filter techniques as the ones...
This presentation is dedicated to my most recent results in the dark sector phenomenology. The anomalous nuclear decays observed at ATOMKI, Hungary lead to the existence of a dark vector meson. It is shown that the mass of the dark meson should be around 17 MeV and the interaction constant ∼ 10−4e. Those parameters cannot introduce the required correction to the muon magnetic moment. We...
The existence of Dark Matter as a thermal remnant of the Big Bang could be proven observing the interaction of weakly interacting massive particles (WIMPs) with matter. To search for dark matter, we use argon as a target in a two-phase Time Projection Chamber (TPC). This is a demonstrated technology and has generated impressive results with the DarkSide-50 detector. The primary advantages of...
DarkSide-20k, a global direct dark matter search experiment, is located at the Gran Sasso National Laboratory (LNGS), Italy. It is designed to reach a total exposure of 200 tonne-years nearly free from instrumental backgrounds. The core of the detector is a dual-phase Time Projection Chamber (TPC) containing 50 tonnes of underground liquid argon (UAr) with low levels of cosmogenic $^{39}Ar$...
In point of fact, ultra-high-energy cosmic rays (UHECRs) represent the pinnacle of particle acceleration in the universe, with energies exceeding 1018 eV - over a million times higher than the most powerful human-made particle accelerators. However, their very existence defies our current understanding of cosmic particle accelerators and challenges the limits of nuclear and particle...
Tentative observations of cosmic-ray antihelium by the AMS-02 collaboration have re-energized the quest to use antinuclei to search for physics beyond the standard model. However, our transition to a data-driven era requires more accurate models of the expected astrophysical antinuclei fluxes. We use a state-of-the-art cosmic-ray propagation model, fit to high-precision antiproton and...
The existence of fractionally charged particles (FCP) is foreseen in extensions of or beyond the Standard Model of particle physics. The FCP is commonly assumed to be a kind of heavy lepton-like particle which is searched in cosmic-rays by underground and space experiments like DAMPE. The DArk Matter Particle Explorer (DAMPE) is a space telescope launched on December 17th, 2015 and taking data...
Title:
Core collaApse Supernovae parameTers estimatOR: a novel software for data analysis
Abstract:
The future of time-domain optical astronomy relies on the development of techniques and software capable of handling a rising amount of data and gradually complementing, or replacing if necessary, real observations. Next generation’s surveys, like the Large Synoptic Survey Telescope...
We present an exact solution of General Theory of Relativity, wherein rotational tensor and strain-deformation tensor are found embedded in Einstein curvature tensor. It turns out that these tensors encapsulate Dirac matrices, as concealed modules within Christoffel symbols of second kind. Additionally, the partial differentiation of these Christoffel symbols discovers three major underlying...
Galactic γ-ray extension sources exhibit complex emission patterns, potentially dominated by either leptonic or hadronic processes. Pulsar halos, known as TeV halos, are extended γ-ray emissions around middle-aged pulsars. While the TeV emission is attributed to inverse Compton scattering, the transport mechanism within the halo remains debated.
This study explores the multiwavelength...
ABSTRACT
Dwarf satellite galaxies orbiting the Milky Way are thought to have significantly larger amounts of mass than the ones derived from their observed light. This 'dark matter' (DM) is not only in these objects but it is present at all scales, accounting for more than 80% of the total mass in the Universe. In the case of dwarf satellite galaxies, current DM density profile models...
The Alpha Magnetic Spectrometer-02 (AMS-02) has provided high-quality measurements of cosmic-ray (CR) spectra both for nuclei and for isotopes. The interpretation of such high-quality data is challenging because of the temporal variations in solar activity, impacting CR intensity assessments. Using the GALPROP-HelMod joint effort we created a unique analysis framework combining physical...
KM3NeT is a new research infrastructure housing the next generation of neutrino
telescopes in the Mediterranean deep sea. This facility comprises two detectors:
KM3NeT/ARCA and KM3NeT/ORCA, consisting of vertical arranged detection
units, 230 and 115, respectively, each equiped with 18 digital optical modules.
The photomultipliers within each optical module detect Cherenkov light...
Running since 2004, the Pierre Auger Observatory remains the largest detector for extensive air showers induced by ultra-high-energy cosmic rays. The complex spatio-temporal information from shower footprints, comprised of particle arrival times and traces measured by water-Cherenkov detectors, is challenging to analyse with traditional methods but well-suited for machine learning based...
Supernova remnants have long been considered as the most potential class of sources for Galactic cosmic rays. The point-like nature of these objects could potentially lead to strong variations in the distribution of cosmic rays, especially in the MeV and PeV energy range (the two energy frontiers of Galactic cosmic rays). Such variations mean that the local cosmic-ray spectra may only be...
The European Partnership on Metrology (EPM) joint research project BIOSPHERE aims to develop the necessary instrumentation, methods, and measurement infrastructure to assess how the increasing ionization of the atmosphere, caused by extraterrestrial radiation fields (cosmic rays and solar UV radiation) and amplified by anthropogenic emissions, affects the human and ecological health of our...
KM3NeT is a water Cherenkov neutrino telescope foreseeing two detection sites in the Mediterranean Sea: ORCA and ARCA, both sharing the same technology. ORCA, under construction offshore Toulon (France), aims at clarifying the neutrino mass ordering exploiting the oscillation of atmospheric neutrinos in the energy range of a few GeV to 100 GeV traversing the Earth. ARCA, under construction...
Cosmic Ray Muons are highly energetic and can be used in different applications such as muography to detect voids and cracks within underground structures. In this work, PHITS based Analytical Radiation Model in the Atmosphere (PARMA) is used to generate cosmic ray muons at Egypt-Japan University for Science and Technology (E-JUST) location. The tracks of these muons through the layers of...
Axion-like particles (ALPs) are a common feature in several extensions of the Standard Model, arising, for example, as a solution to the strong CP problem in quantum chromodynamics, or as a prediction of string theories. A significant property for the experimental detection of ALPs is their coupling to photons, which enables ALP-photon conversions in ambient magnetic fields.
In particular,...
Investigating the relationship between cosmic rays and solar activity is of paramount importance in astroparticle and space physics. On one hand, it brings a deeper understanding of the physical mechanisms governing the transport of cosmic rays inside the heliosphere. On the other hand, it plays a crucial role in evaluating radiation exposure and associated risks in space missions. Here, we...
The Alpha Magnetic Spectrometer (AMS-02) is a precision particle physics detector installed on the International Space Station (ISS). It provides independent rigidity and beta measurements of cosmic particles with exceptional accuracy. While the rigidity measurements from AMS have been extensively studied, understanding the accuracy of beta measurements is crucial for isotopes analysis. This...
The lightcurves package is a python module that is readily available via PyPi. It was developed to analyze variability in Fermi-LAT light curves of blazars but the tools can be applied to any time series. The functionalities include, for instance, the Bayesian block algorithm, the HOP algorithm, methods to study temporal correlation and analysis methods for the power density spectrum....
The "Advanced Particle astrophysics Telescope" (APT) is a mission
concept for a future very large area space-based MeV-TeV gamma-ray
observatory. A small-scale prototype, the Antarctic Demonstrator for APT
(ADAPT), is currently being designed and built to fly on a balloon.
Among its subdetectors is a hodoscope that will allow tracking and localization of charged particle trajectories...
In this contribution, a search for neutrino emission from the Central
Molecular Zone (CMZ) and the Cygnus region is presented exploiting
KM3NeT/ARCA capabilities.
The CMZ extends for few hundred parsecs around the Galactic centre,
containing the massive molecular clouds Sgr A, Sgr B, and Sgr C.
On the other hand, the Cygnus region is a massive star-forming region
of few hundred parsecs...
