The Cherenkov Telescope Array (CTA) is a next-generation atmospheric Cherenkov gamma-ray observation which will consist of two sites, one in Paranal and another one in La Palma, and three different types of telescopes (large, medium, and small size telescopes). CTA will be coordinated by the Array Control and Data Acquisition (ACADA). ACADA will collect event data from all of the CTA...
The Southern Wide-field Gamma-ray Observatory (SWGO) is a next-generation ground-based gamma-ray observatory. Currently in the R&D phase, the experiment is expected to have a large array of water Cherenkov detectors (WCD) placed at high elevations in South America. This will enable precise observations of the gamma-ray sky, mainly in the regime of ~100GeV up to the PeV region. The primary...
A TeV halo is defined as the Inverse Compton emission from $e^\pm$
diffusing in the Interstellar Medium, injected by a Pulsar Wind
Nebula (PWN). The pulsars surrounded by such halos are generally
older than those powering the TeV PWNe identified in the H.E.S.S
Galactic Plane Survey (HGPS). We revisit the HGPS sources in search
of halo candidates among coincidences between TeV components...
Recently, several observatories have discovered photons of cosmic origin with maximum energies in the PeV ($10^{15}\,\text{eV}$) range. Photons at these energies might be produced as by-products from particle acceleration in so-called PeVatrons, which are widely assumed to be the source of a large part of galactic cosmic rays. The first PeVatron to be firmly established was the Crab nebula, a...
We present a detailed study of the contribution of low- and high-luminosity jetted Active Galactic Nuclei (AGN) populations to the spectrum and composition of ultra-high-energy cosmic rays (UHECRs) and the corresponding EeV neutrino flux. We find that two AGN populations should have different properties to explain the UHECR data. Our results show that the dominant contribution to the neutrino...
The XENONnT experiment, located underground at the Laboratori Nazionali del Gran Sasso, uses a total of 8.6t of high-purity liquid xenon to directly search for WIMP (weakly interacting massive particle) dark matter using a dual phase time projection chamber. A predominant part of the detector's low-energy background is caused by intrinsic contamination of the xenon with Rn-222, which is...
In the KArlsruhe TRItium Neutrino (KATRIN) experiment we perform a precision measurement of the tritium beta decay spectrum. Our goal is to determine the neutrino mass by investigating the spectrum shape near the endpoint region at around $18.6$ keV. Recently we have published a new direct upper limit on neutrino mass of $0.8$ eV/c${}^2$ (90% C.L.) which has been obtained with only 5% of the...
On the various astrophysical and cosmological scales there is compelling evidence for the existence of dark matter beyond the constituents of our Standard Model of particle physics. WIMPs are among the favored candidates which would solve also other problems of the Standard Model. The DARWIN Collaboration and/or the XLZD Consortium plan a next generation xenon detector with 40t (or up to 80t)...
DISCO (Directionality in Scintillation Observer) is a lab-scale experiment built at the University of Mainz to characterize water-based liquid scintillators (WbLS) and demonstrate the ability to separate Cherenkov and Scintillation light. It consists of three main components: the muon tracker, the test cell, and the light detection system. The test cell can be filled with water, a...
Astrophysical neutrinos are a great tool to study physics beyond the standard model of particle physics (BSM), one such source being galactic supernovae (SN). While these neutrinos can be detected by traditional neutrino detectors via the production of their charged lepton partners, they undergo the neutral current (NC) Coherent Elastic Neutrino Nucleus Scattering (CE$\nu$NS) process. These...
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\title{Analysing the Fermi Bubbles\
\large using improved models and datasets}
\author{Paul-Simon Blomenkamp\ ...
The existing discrepancies between the observation of local and extraction of global cosmological parameters motivate an extension of the ΛCDM cosmological model. A proposed extension called SU(2)_CMB describes cosmic microwave background (CMB) photons with an SU(2) instead of a U(1) gauge group. This mitigates some of these tensions, for example 𝐻0, Ω𝑚, 𝜎8, pushes the recombination epoch to...
Very Special Relativity (VSR) is a particular realization of Lorentz violation, which was presented for the first time by Cohen and Glashow in 2006 with the idea of introducing an alternative mechanism for neutrinos' masses. Since then, the ideas of VSR have been applied to many different areas. In this talk, after a short introduction to the key features of VSR, I will present its application...
Extreme high-energy peaked BL Lac objects (EHBLs) are an emerging class of Blazars with specific spectral properties, characterized by synchrotron emission peaking in the hard X-rays band and inverse compton emission peaking at TeV energies, possible sources energy extra-galactic neutrinos. The presence of a jet extending up to hundreds of Kiloparsec can guarantee the acceleration of CRs up to...
Understanding the properties of extensive air showers (EAS) is of prime importance for extracting the properties of ultra high-energy cosmic rays from data, such as collected by the Pierre Auger Observatory. Inferring their primary energy and, most importantly, their primary mass relies on detailed comparisons of EAS measurements with corresponding air shower simulations. The largest...
