arXiv subjects

A. Souza

Publications and source records attributed to A. Souza.

3 recordsLinked to original sources

arXiv2018

Systems Enginnering applied to spectroscopy of the ELTs: The Conceptual Design phase of GMACS

An important tool for the development of the next generation of extremely large telescopes (ELTs) is the Systems Engineering (SE). GMACS is the first-generation multi-object spectrograph working at visible wavelengths for the Giant Magellan Telescope (GMT). The aim is to discuss the application of SE in ground-based astronomy for multi-object spectrographs. For this, it is presented the SE of the GMACS spectrograph, currently on its Conceptual Design phase. SE provide means to assist the management of complex projects, and in the case of GMACS, to ensure its success when in operation, maximizing the scientific potential of GMT.

astro-ph.IM↗

arXiv2018

Systems engineering applied to ELT instrumentation: The GMACS case

An important tool for the development of the next generation of extremely large telescopes (ELTs) is a robust Systems Engineering (SE) methodology. GMACS is a first-generation multi-object spectrograph that will work at visible wavelengths on the Giant Magellan Telescope (GMT). In this paper, we discuss the application of SE to the design of next-generation instruments for ground-based astronomy and present the ongoing development of SE products for the GMACS spectrograph, currently in its Conceptual Design phase. SE provides the means to assist in the management of complex projects, and in the case of GMACS, to ensure its operational success, maximizing the scientific potential of GMT.

astro-ph.IM↗

arXiv2005

A new method for analyzing second-order phase transitions applied to the ferromagnetic transition of a polaronic system

A new method for analyzing second-order phase transitions is presented and applied to the polaronic system La$_{0.7}$Ca$_{0.3}$MnO$_{3}$. It utilizes heat capacity and thermal expansion data simultaneously to correctly predict the critical temperature's pressure dependence. Analysis of the critical phenomena reveals second-order behavior and an unusually large heat capacity exponent.

cond-mat.str-el↗