DSpace Collection: Capitoli o saggi contenuti in un libro (ad esclusione degli atti di convegno)
http://hdl.handle.net/20.500.12386/16
Capitoli o saggi contenuti in un libro (ad esclusione degli atti di convegno)2024-02-28T14:17:56ZCosmic rays: physics, chemistry, and computational challenges
http://hdl.handle.net/20.500.12386/34801
Title: Cosmic rays: physics, chemistry, and computational challenges
Authors: PADOVANI, Marco; Gaches, Brandt
Abstract: In regions shielded from ultraviolet radiation, energetic charged particles, called cosmic rays, are the dominant drivers of ionization, dissociation, and excitation. This chapter discusses the basics of cosmic-ray transport and acceleration, their impact on the thermochemistry of molecular gas, and methods to include cosmic-ray processes into astrochemical models.2024-01-01T00:00:00ZVLNDEF Project for Geodetic Infrastructure Definition of Northern Victoria Land, Antarctica
http://hdl.handle.net/20.500.12386/34687
Title: VLNDEF Project for Geodetic Infrastructure Definition of Northern Victoria Land, Antarctica
Authors: Capra, A.; Dubbini, M.; Galeandro, A.; Gusella, L.; ZANUTTA, Alessio; Casula, G.; NEGUSINI, MONIA; Vittuari, L.; SARTI, PIERGUIDO; Mancini, F.; Gandolfi, S.; Montaguti, M.; Bitelli, G.2008-01-01T00:00:00ZCosmological Parameters from Galaxy Clusters: An Introduction
http://hdl.handle.net/20.500.12386/34553
Title: Cosmological Parameters from Galaxy Clusters: An Introduction
Authors: TOZZI, Paolo
Abstract: This lecture is an introduction to cosmological tests with clusters of galaxies. Here, I do not intend to provide a complete review of the subject, but rather to describe the basic procedures to set up the fitting machinery to constrain cosmological parameters from clusters, and to show how to handle data with a critical insight. I will focus mainly on the properties of X ray clusters of galaxies, showing their success as cosmological tools, to end up discussing the complex thermodynamics of the di?use intracluster medium and its impact on the cosmological tests.2007-01-01T00:00:00ZFilters for X-ray detectors on Space missions
http://hdl.handle.net/20.500.12386/34505
Title: Filters for X-ray detectors on Space missions
Authors: BARBERA, Marco; LO CICERO, UGO; SCIORTINO, LUISA
Abstract: Thin filters and gas tight windows are used in Space to protect sensitive X-ray detectors from out-of-band electromagnetic radiation, low-energy particles, and molecular contamination. Though very thin and made of light materials, filters are not fully transparent to X-rays. For this reason, they ultimately define the detector quantum efficiency at low energies. In this chapter, we initially provide a brief overview of filter materials and specific designs adopted on space experiments with main focus on detectors operating at the focal plane of grazing incidence X-ray telescopes. We then provide a series of inputs driving the design and development of filters for high-energy astrophysics space missions. We begin with the identification of the main functional goals and requirements driving the preliminary design, and identify modeling tools and experimental characterization techniques needed to prove the technology and consolidate the design. Finally, we describe the calibra- tion activities required to derive the filter response with high accuracy. We conclude with some hints on materials and technologies presently under investigation for future X-ray missions.2023-01-01T00:00:00Z