MULTI-SENSOR SURVEYS FOR THE CHURCH OF SANT'AGNELLO ABATE. 3D MODELS AND VIRTUAL FRUITION

The proposed contribution outlines the study conducted on the Church of Sant’Agnello Abate, located in the ancient center of the city of Maddaloni. The church is characterized by severe decay conditions and has been inaccessible and unusable for decades. To recover the memory of a place that was habitually used until 1980, survey activities were performed on the building body. Specifically, multi-sensor surveys have been performed and allowed the complete 3D documentation of the building. Various goals were set: documenting the current condition and configuration of the church: creating virtual fruition systems, since the place is closed and characterized by poor safety conditions; establishing communication models, aligned with contemporary iconographic culture, for the appearance of the places before 1980. Both for survey technologies and fruition modalities, low-cost systems were employed and tested

Astrophysical constraints on a possible neutrino ball at the Galactic Center

The nature of the massive object at the Galactic Center (Sgr A$^{*}$) is still unclear even if various observational campaigns led many authors to believe that our Galaxy hosts a super-massive black hole with mass $M\simeq 2.6\times 10^6$ M$_{\odot}$. However, the black hole hypothesis, which theoretically implies a luminosity $\simeq 10^{41}$ erg s$^{-1}$, runs into problems if one takes into account that the observed luminosity, from radio to $\gamma$-ray wavelengths, is below $10^{37}$ erg s$^{-1}$. In order to solve this blackness problem, alternative models have been recently proposed. In particular, it has been suggested that the Galactic Center hosts a ball made up by non-baryonic matter (e.g. massive neutrinos and anti-neutrinos) in which the degeneracy pressure of fermions balances their self-gravity. Requiring to be consistent with all the available observations towards the Galactic Center allows us to put severe astrophysical constraints on the neutrino ball parameters. The presence of such an object in the Galactic Center may be excluded if the constituent neutrino mass $m_{\nu}$ is \ut> 24 keV, while if m_{\nu}\ut< 24 keV observations can not give a definite answer

MULTI-SCALAR SURVEYS FOR COMPLEX ARCHITECTURES

Abstract. This study is part of a much wider project in which professors and researchers from the University of Naples Federico II and the University of Campania Luigi Vanvitelli are collaborating in different subject areas. The object of study is the ancient Sanctuary of Montevergine characterized by a long history of transformations and stratifications. Driven by the desire to fill a singular gap, linked to the lack of a systematic and comprehensive study of a complex whose first settlement dates back to the early 12th century, various studies have been started relating to the historical, artistic and architectural aspects.Various surveying techniques and methods had to be used due to its architectural, compositional and settlement characteristics. Integrated 3D surveying technologies were used for both the cognitive studies of the entire complex as well as for investigating and detecting the elements at different scales, ranging from the architectural to the detailed ones

Strong field limit of black hole gravitational lensing

We give the formulation of the gravitational lensing theory in the strong field limit for a Schwarzschild black hole as a counterpart to the weak field approach. It is possible to expand the full black hole lens equation to work a simple analytical theory that describes at a high accuracy degree the physics in the strong field limit. In this way, we derive compact and reliable mathematical formulae for the position of additional critical curves, relativistic images and their magnification, arising in this limit.Comment: 11 pages, 3 figure

Fermion Helicity Flip Induced by Torsion Field

We show that in theories of gravitation with torsion the helicity of fermion particles is not conserved and we calculate the probability of spin flip, which is related to the anti-symmetric part of affine connection. Some cosmological consequences are discussed.Comment: 6 pages, to appear in Europhysics Letter

Discovering hidden architectures of ancient time: 3d data survey to reveal the myth of mithra in Santa Maria Capua Vetere

The research illustrated in this paper is part of a wider testing ground, aimed at identifying and developing processes of le arning and development taking place in archaeological contexts. These sites are investigated through the use of advanced technology, based on integrated methods of survey of new generation. The aim is to identify alternative languages of representation, able to read and to represent effectively the analyzed object and to propose alternative enjoyment systems. The case study is the Mithraeum in Santa Maria Capua Vetere, for which were carried out surveys with non-contact techniques, based on the use of instrumentations, for the acquisition of colorimetric and metric informations, that exploit a non-invasive approach. Data coming from laser scanner's sensors, combined with GPS receivers, are processed to define a three-dimensional centimetric space, in a single reference system of individual scans. Purpose of this research is to identify representation techniques able to communicate the sense of the multiple interrelations and of interferences among parties, providing the subsequent insertion of data into a wider project of cataloging, fruition and valuation of cultural heritage. The chance to diffuse Digital surveys is now a possible and implementable reality. The purpose is to spread awareness of World Heritage, in a participatory manner and based on the spiri t of knowledge, conveying all the strength of cultural content that heritage has