Laboratory astroparticle physics

Abstract:

Data for the plots in Measurement of turbulent velocity and bounds for thermal diffusivity in laser shock compressed foams by X-ray photon correlation spectroscopy

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Discussion about the new edition of the Catalogue on the Latin epigraphy from Ostia, with the publication of over 2000 sepulchral inscriptions. They shed light on the work of the stonecutters, and on the various types of errors that they used to commit, or on onomastic peculiarities.

Abstract:

After the 1968 excavation, the investigations of the Roman theater of Terracina, although carried out episodically over a long period of time, were part of a unified program, at least as far as the objective was concerned: the redevelopment of the Piazza del Municipio, the ancient forum of the colony of Anxur. After seventeen excavation and restoration campaigns carried out by various teams — the most recent being the one writing these lines — extensive research work has recently made the monument fully accessible. This has made it possible to use the site as a venue for events, while at the same time underlining the urgency of its scientific publication. The excavation campaigns carried out in the area of the theater-portico over the past three decades have uncovered numerous findings: fragments of architectural decoration, a fair number of inscriptions, and parts of the sculptural ornamentation. The contextual reassessment of some of this material, along with the analysis of the wall stratigraphy, has made it possible to propose not only a reconstruction of the structure but also a detailed interpretation of the theater’s construction history. For its initial phase, both the archaeological and epigraphic records suggest a dating to the Caesarian age, followed by a phase of monumentalization, or more likely completion, during the Augustan age.

Abstract:

Recent archaeological research in the Valle Sabbia in the territory of Brescia (BS-Northern Italy) has led to the discovery of a new place of worship from the Roman era, possibly built on an ancient indigenous sanctuary. The Valle Sabbia is one of the alpine valleys of Lombardy, north of Brescia (the Colonia Augusta Civica Brixia). The territory, crossed by the river Chiese, stretches between Lake Idro and Lake Garda, in a favourable geographical position that puts it in direct contact with the plain on one side and the Alps on the other. Since 2000, campaigns of archaeological excavations have led to the discovery of different contexts that can be interpreted as sacred, with frequenting from prehistoric times to Roman times and which have as recurrent characteristic a close relationship with the surrounding landscape, with a clear preference for mountainous and wooded contexts. The most important novelties, concerning the Roman period, emerge in Villanuova sul Clisi, where on a panoramic hill overlooking the entire Valle Sabbia and Garda Lake, various wall structures have emerged that define a complex built on several levels, with a rectangular main room of about 11×4,20 m, made with large structures confining the summit plateau, and other lateral ones. The recovered materials indicate a visitation from the 1st to the 4th century A.D.: in addition to coins, fibulae and ceramics, some miniature metal ex-voto with dedications to Iuppiter Aeternus, various graffiti on plaster and a stone altar also inscribed have been uncovered.

Abstract:

Abstract Recent experiments aiming to measure phenomena predicted by strong-field quantum electrodynamics (SFQED) have done so by colliding relativistic electron beams and high-power lasers. In such experiments, measurements of collision parameters are not always feasible. However, precise knowledge of these parameters is required to accurately test SFQED. Here, we present a novel Bayesian inference procedure that infers collision parameters that could not be measured on-shot. This procedure is applicable to all-optical non-linear Compton scattering experiments investigating radiation reaction. The framework allows multiple diagnostics to be combined self-consistently and facilitates the inclusion of known information pertaining to the collision parameters. Using this Bayesian analysis, the relative validity of the classical, quantum-continuous and quantum-stochastic models of radiation reaction was compared for several test cases, which demonstrates the accuracy and model selection capability of the framework and highlight its robustness if the experimental values of fixed parameters differ from their values in the models.