1. High-resolution ptychographic imaging at a seeded free-electron laser source using OAM beamsMatteo Pancaldi, Francesco Guzzi, Charles S. Bevis, Michele Manfredda, Jonathan Barolak, Stefano Bonetti, Iuliia Bykova, Dario De Angelis, Giovanni De Ninno, Arun Ravindran, 2024, izvirni znanstveni članek Objavljeno v RUNG: 01.04.2025; Ogledov: 259; Prenosov: 3
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2. The flux of UHECRs along the supergalactic plane using Pierre Auger Observatory dataArmando Di Matteo, Andrej Filipčič, Jon Paul Lundquist, Shima Ujjani Shivashankara, Samo Stanič, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, 2025, objavljeni znanstveni prispevek na konferenci Opis: We use the latest dataset from the surface detector array of the Pierre Auger Observatory, with events detected up to 31 December 2022 and a total exposure of 135,000 km² sr yr, to search for possible excesses in the flux of the most energetic cosmic rays on an intermediate angular scale (top-hat radius 27°, based on our previous results) from regions along the supergalactic plane. We find no indication for any such excesses other than the previously reported one in the Centaurus region, with a post-trial significance around 3σ, which we find extends down to lower energies than previously studied. In particular, the field of view of our dataset overlaps both regions in the northern celestial hemisphere from which excesses of events have been reported by the Telescope Array. With our integral exposures over these regions comparable to the Telescope Array ones, we find no indication of any flux excesses from there, with event counts in good agreement with the expectations from an isotropic distribution.
Ključne besede: ultra-high-energy cosmic rays, Pierre Auger Observatory, anisotropies, Centaurus region
Objavljeno v RUNG: 24.03.2025; Ogledov: 302; Prenosov: 5
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3. Common targetable biomarkers in canine hemangiosarcoma and human angiosarcomaHuyen Thuc Tran Luong, Dominique Revets, Matteo De March, Sofie Vercammen, Hilde De Rooster, Ario De Marco, Antonio Cosma, 2024, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: comparative oncology, angiosarcoma, hemangiosarcoma, nanobodies
Objavljeno v RUNG: 18.03.2025; Ogledov: 330; Prenosov: 0
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4. Computational study of the HLTF ATPase remodeling domain suggests its activity on dsDNA and implications in damage toleranceMartin Ljubič, Claudia D'Ercole, Yossma Waheed, Ario De Marco, Jure Borišek, Matteo De March, 2024, izvirni znanstveni članek Ključne besede: DNA repairing mechanism, protein modeling, chromatin remodeler, helicase-like transcription factor
Objavljeno v RUNG: 15.11.2024; Ogledov: 1085; Prenosov: 2
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5. New achievements in orbital angular momentum beam characterization using a Hartmann wavefront sensor and the Kirkpatrick-Baez active optical system KAOSLuka Novinec, Matteo Pancaldi, Flavio Capotondi, Giovanni De Ninno, Francesco Guzzi, George Kourousias, Emanuele Pedersoli, Barbara Ressel, Benedikt Rösner, Alberto Simoncig, 2024, izvirni znanstveni članek Opis: Advances in physics have been significantly driven by state-of-the-art technology, and in photonics and X-ray science this calls for the ability to manipulate the characteristics of optical beams. Orbital angular momentum (OAM) beams hold substantial promise in various domains such as ultra-high-capacity optical communication, rotating body detection, optical tweezers, laser processing, super-resolution imaging etc. Hence, the advancement of OAM beam-generation technology and the enhancement of its technical proficiency and characterization capabilities are of paramount importance. These endeavours will not only facilitate the use of OAM beams in the aforementioned sectors but also extend the scope of applications in diverse fields related to OAM beams. At the FERMI Free-Electron Laser (Trieste, Italy), OAM beams are generated either by tailoring the emission process on the undulator side or, in most cases, by coupling a spiral zone plate (SZP) in tandem with the refocusing Kirkpatrick–Baez active optic system (KAOS). To provide a robust and reproducible workflow to users, a Hartmann wavefront sensor (WFS) is used for both optics tuning and beam characterization. KAOS is capable of delivering both tightly focused and broad spots, with independent control over vertical and horizontal magnification. This study explores a novel non-conventional `near collimation' operational mode aimed at generating beams with OAM that employs the use of a lithographically manufactured SZP to achieve this goal. The article evaluates the mirror's performance through Hartmann wavefront sensing, offers a discussion of data analysis methodologies, and provides a quantitative analysis of these results with ptychographic reconstructions.
Ključne besede: tailored photonics beams, orbital angular momentum of light, wavefront sensing, ptychography
Objavljeno v RUNG: 19.08.2024; Ogledov: 1736; Prenosov: 4
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7. A practical guide for the quality evaluation of fluobodies/chromobodiesUrša Štrancar, Claudia D'Ercole, Lucia Cikatricisová, Mirna Nakić, Matteo De March, Ario De Marco, 2024, izvirni znanstveni članek Ključne besede: fluorescent proteins, protein stability, protein degradation
Objavljeno v RUNG: 16.05.2024; Ogledov: 1743; Prenosov: 7
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8. Biological applications of synthetic binders isolated from a conceptually new adhiron libraryClaudia D'Ercole, Matteo De March, Gianluca Veggiani, Sandra Oloketuyi, Rossella Svigelj, Ario De Marco, 2023, izvirni znanstveni članek Ključne besede: synthetic library, adhirons, affimers, C-reactive protein, SpyCatcher
Objavljeno v RUNG: 17.10.2023; Ogledov: 2369; Prenosov: 5
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9. UHECR arrival directions in the latest data from the original Auger and TA surface detectors and nearby galaxiesA. di Matteo, Andrej Filipčič, Jon Paul Lundquist, Samo Stanič, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2022, objavljeni znanstveni prispevek na konferenci Opis: The distribution of ultra-high-energy cosmic-ray arrival directions appears to be nearly isotropic except for a dipole moment of order 6×(E/10 EeV) per cent. Nonetheless, at the highest energies, as the number of possible candidate sources within the propagation horizon and the magnetic deflections both shrink, smaller-scale anisotropies might be expected to emerge. On the other hand, the flux suppression reduces the statistics available for searching for such anisotropies. In this work, we consider two different lists of candidate sources: a sample of nearby starburst galaxies and the 2MRS catalog tracing stellar mass within 250 Mpc.
We combine surface-detector data collected at the Pierre Auger Observatory until 2020 and the Telescope Array until 2019, and use them to test models in which UHECRs comprise an isotropic background and a foreground originating from the candidate sources and randomly deflected by magnetic fields. The free parameters of these models are the energy threshold, the signal fraction, and the search angular scale.
We find a correlation between the arrival directions of 11.8%+5.0%−3.1% of cosmic rays detected with E≥38 EeV by Auger or with E≳49 EeV by TA and the position of nearby starburst galaxies on a 15.5∘+5.3∘−3.2∘ angular scale, with a 4.2σ post-trial significance, as well as a weaker correlation with the overall galaxy distribution.
Ključne besede: Pierre Auger Observatory, Telescope Array, indirect detection, surface detection, ground array, ultra-high energy, cosmic rays, anisotropy, full-sky, starburst galaxies, source correlations, dipole
Objavljeno v RUNG: 04.10.2023; Ogledov: 2384; Prenosov: 5
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