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Centro de Astrofísica da Universidade do Porto
Connectivity test reveals for the first time non-analytic functions underlying lightcurves of pulsating stars

Juan-Carlos Suárez
Universidad de Granada

In this seminar I will introduce the latest advances in time series analysis applied to asteroseismology carried out by our team (IAA-CSIC and University of Granada). In particular I will introduce the first practical test ever done that evaluates the validity of the hypothesis on which Fourier theorem is based, i.e. the convergence of the expansion series. Likewise, I will discuss our latest results applied to photometric time series observed by space instruments (CoRoT and Kepler). These results show that the analysed lightcurves are originated by non-analytic functions. I’ll discuss the implication of such a result in asterosismology and future work.

7 October 2015, 13:30

Centro de Astrofísica
Rua das Estrelas
4150-762 Porto

Institute of Astrophysics and Space Sciences

Institute of Astrophysics and Space Sciences (IA) is a new but long anticipated research infrastructure with a national dimension. It embodies a bold but feasible vision for the development of Astronomy, Astrophysics and Space Sciences in Portugal, taking full advantage and fully realizing the potential created by the national membership of the European Space Agency (ESA) and the European Southern Observatory (ESO). IA resulted from the merging the two most prominent research units in the field in Portugal: the Centre for Astrophysics of the University of Porto (CAUP) and the Center for Astronomy and Astrophysics of the University of Lisbon (CAAUL). It currently hosts more than two-thirds of all active researchers working in Space Sciences in Portugal, and is responsible for an even greater fraction of the national productivity in international ISI journals in the area of Space Sciences. This is the scientific area with the highest relative impact factor (1.65 times above the international average) and the field with the highest average number of citations per article for Portugal.

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