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- Acero, F., et al.
(author)
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Prospects for Cherenkov Telescope Array Observations of the Young Supernova Remnant RX J1713.7-3946
- 2017
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In: Astrophysical Journal. - : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 840:2
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Journal article (peer-reviewed)abstract
- We perform simulations for future Cherenkov Telescope Array (CTA) observations of RX J1713.7-3946, a young supernova remnant (SNR) and one of the brightest sources ever discovered in very high energy (VHE) gamma rays. Special attention is paid to exploring possible spatial (anti) correlations of gamma rays with emission at other wavelengths, in particular X-rays and CO/H I emission. We present a series of simulated images of RX J1713.7-3946 for CTA based on a set of observationally motivated models for the gamma-ray emission. In these models, VHE gamma rays produced by high-energy electrons are assumed to trace the nonthermal X-ray emission observed by XMM-Newton, whereas those originating from relativistic protons delineate the local gas distributions. The local atomic and molecular gas distributions are deduced by the NANTEN team from CO and H I observations. Our primary goal is to show how one can distinguish the emission mechanism(s) of the gamma rays (i.e., hadronic versus leptonic, or a mixture of the two) through information provided by their spatial distribution, spectra, and time variation. This work is the first attempt to quantitatively evaluate the capabilities of CTA to achieve various proposed scientific goals by observing this important cosmic particle accelerator.
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- Gambarato, Renira R., et al.
(author)
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Objetos do Desejo de Wim Wenders [Objects of Desire of Wim Wenders]
- 2005
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In: Revista Digital Art&. - : Revista Digital Art&. - 1806-2962. ; 3:4, s. 20-40
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Journal article (peer-reviewed)abstract
- This article aims to analyze the objects as sign in the aesthetic context of the cinema, more specifically in the German film director Wim Wenders´ work. In the movies the objects translate the character´s interior, in a game which rules are based on the ethical-aesthetical commitment with the conceptual of the narrative. Therefore, we developed a specific methodology to make such analyses in the sense of peircean semiotics and intermedial studies.
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