Una rilettura topografica e urbanistica di Agrigento da dati aerofotografici. Metodologie e risultati preliminari.

Una lettura del dato archeologico di Mura Pregne attraverso le tecnologie GIS

Indagini per la carta archeologica e il SIT del Parco Archeologico e Paesaggistico di Agrigento

Si descrivono in breve le metodologie di indagine impiegate per la redazione della carta archeologica e del SIT del Parco di Agrigento

Search for High-energy Neutrinos from Gravitational Wave Event GW151226 and Candidate LVT151012 with ANTARES and IceCube

[EN] The Advanced LIGO observatories detected gravitational waves from two binary black hole mergers during their first observation run (O1). We present a high-energy neutrino follow-up search for the second gravitational wave event, GW151226, as well as for gravitational wave candidate LVT151012. We find two and four neutrino candidates detected by IceCube, and one and zero detected by ANTARES, within +/- 500 s around the respective gravitational wave signals, consistent with the expected background rate. None of these neutrino candidates are found to be directionally coincident with GW151226 or LVT151012. We use nondetection to constrain isotropic-equivalent high-energy neutrino emission …

Il «Progetto Cignana» (Naro-Palma di Montechiaro, Sicilia). Carta archeologica e metodologie GIS per la ricostruzione delle dinamiche territoriali dall’età arcaica al tardo-antico

The aim of the Cignana Project (Agrigento, Sicily) is to analyse the geographic context of a villa of imperial age, where a systematic archaeological survey has carried out since 2007, in order to detect the ancient settlements from prehistoric to medieval times. The archaeological data are analyzed by GIS methodologies (3D, supply basins, shortest path analysis), to understand intervisibility and interrelationship between sites of different rank, and finally to try and find out the resources available during the different periods.

Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A

On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was observed independently by the Fermi Gamma-ray Burst Monitor, and the Anticoincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory. The probability of the near-simultaneous temporal and spatial observation of GRB 170817A and GW170817 occurring by chance is $5.0\times 10^{-8}$. We therefore confirm binary neutron star mergers as a progenitor of short GRBs. The association of GW170817 and GRB 170817A provides new insight into fundamental physics and the origin of short gamma-ray bursts. We use the ob…