EXPERIÊNCIAS PEDAGÓGICAS, FORMATIVAS E DIALÓGICAS DO PIP FILO

O presente texto é um relato da experiência do Projeto de Inovação Pedagógica do curso de Filosofia (PIP FILO) da Universidade Federal do Tocantins. O projeto teve início em junho de 2021 e sua finalização em dezembro do mesmo ano. O intuito do projeto foi proporcionar a utilização de novas ferramentas digitais para as práticas pedagógicas de ensino. O conteúdo aqui descrito faz parte de um curso de formação digital promovido pelo PIP FILO e que contou com a colaboração do curso de Teatro e do Residência Pedagógica. O projeto se desenvolveu junto com um Tutor  e com Monitores de Inovação Pedagógica (MIPs) por dois caminhos; (1) a utilização de ferramentas digitais como prática pedagógica por meio de cursos, oficinas, lives e palestras, (2) a realização de uma chuva de ideias que foi organizada no mindmeister, no qual restringindo-nos à pesquisa sobre fakes news atribuídas a Paulo Freire e que acrescentamos a essa pesquisa uma dose de humor dos cínicos gregos

A search for ultra-high-energy photons at the Pierre Auger Observatory exploiting air-shower universality

The Pierre Auger Observatory is the most sensitive detector to primary photons with energies above ∼0.2 EeV. It measures extensive air showers using a hybrid technique that combines a fluorescence detector (FD) with a ground array of particle detectors (SD). The signatures of a photon-induced air shower are a larger atmospheric depth at the shower maximum (X$_{max}$) and a steeper lateral distribution function, along with a lower number of muons with respect to the bulk of hadron-induced background. Using observables measured by the FD and SD, three photon searches in different energy bands are performed. In particular, between threshold energies of 1-10 EeV, a new analysis technique has been developed by combining the FD-based measurement of X$_{max}$ with the SD signal through a parameter related to its muon content, derived from the universality of the air showers. This technique has led to a better photon/hadron separation and, consequently, to a higher search sensitivity, resulting in a tighter upper limit than before. The outcome of this new analysis is presented here, along with previous results in the energy ranges below 1 EeV and above 10 EeV. From the data collected by the Pierre Auger Observatory in about 15 years of operation, the most stringent constraints on the fraction of photons in the cosmic flux are set over almost three decades in energy

Study on multi-ELVES in the Pierre Auger Observatory

Since 2013, the four sites of the Fluorescence Detector (FD) of the Pierre Auger Observatory record ELVES with a dedicated trigger. These UV light emissions are correlated to distant lightning strikes. The length of recorded traces has been increased from 100 μs (2013), to 300 μs (2014-16), to 900 μs (2017-present), to progressively extend the observation of the light emission towards the vertical of the causative lightning and beyond. A large fraction of the observed events shows double ELVES within the time window, and, in some cases, even more complex structures are observed. The nature of the multi-ELVES is not completely understood but may be related to the different types of lightning in which they are originated. For example, it is known that Narrow Bipolar Events can produce double ELVES, and Energetic In-cloud Pulses, occurring between the main negative and upper positive charge layer of clouds, can induce double and even quadruple ELVES in the ionosphere. This report shows the seasonal and daily dependence of the time gap, amplitude ratio, and correlation between the pulse widths of the peaks in a sample of 1000+ multi-ELVES events recorded during the period 2014-20. The events have been compared with data from other satellite and ground-based sensing devices to study the correlation of their properties with lightning observables such as altitude and polarity