@article{TorresRomeroEiroaetal.2003, author = {Torres, D. F. and Romero, G. E. and Eiroa, E. F. and Wambsganß, Joachim and Pessah, M. E.}, title = {Gravitational microlensing of gamma-ray blazars}, year = {2003}, abstract = {We present a detailed study of the effects of gravitational microlensing on compact and distant gamma-ray blazars. These objects have gamma-ray-emitting regions that are small enough to be affected by microlensing effects produced by stars lying in intermediate galaxies. We compute the gravitational magnification taking into account effects of the lensing and show that, whereas the innermost gamma-ray spheres can be significantly magnified, there is little magnification either for very high gamma-ray energies or for lower (radio) frequencies (because these wavelengths are emitted from larger regions). We analyse the temporal evolution of the gamma-ray magnification for sources moving in a caustic pattern field, where the combined effects of thousands of stars are taken into account using a numerical technique. We propose that some of the unidentified gamma-ray sources (particularly some of those lying at high galactic latitude with gamma-ray statistical properties that are very similar to detected gamma-ray blazars) are indeed the result of gravitational lensing magnification of background undetected active galactic nuclei (AGN). This is partly supported from a statistical point of view: we show herein as well, using the latest information from the third EGRET catalogue, that high-latitude gamma-ray sources have similar averaged properties to already detected gamma-ray AGN. Some differences between both samples, regarding the mean flux level, could also be understood within the lensing model. With an adequate selection of lensing parameters, it is possible to explain a variety of gamma-ray light curves with different time-scales, including non-variable sources. The absence of strong radio counterparts could be naturally explained by differential magnification in the extended source formalism.}, language = {en} } @article{RodriguezQuilesyGarciaSoriaTorres, author = {Rodr{\´i}guez-Quiles y Garc{\´i}a, Jos{\´e} A. and Soria Torres, Carmen M.}, title = {Musique et Communaut{\´e}s d'Apprentissage}, series = {Potsdamer Schriftenreihe zur Musikp{\"a}dagogik}, journal = {Potsdamer Schriftenreihe zur Musikp{\"a}dagogik}, number = {7}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, doi = {10.25932/publishup-43385}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433858}, pages = {93 -- 114}, language = {fr} } @article{GonzalezFortesKolbeFernandesetal.2016, author = {Gonz{\´a}lez-Fortes, Gloria M. and Kolbe, Ben and Fernandes, Daniel and Meleg, Ioana N. and Garcia-Vazquez, Ana and Pinto-Llona, Ana C. and Constantin, Silviu and de Torres, Trino J. and Ortiz, Jose E. and Frischauf, Christine and Rabeder, Gernot and Hofreiter, Michael and Barlow, Axel}, title = {Ancient DNA reveals differences in behaviour and sociality between brown bears and extinct cave bears}, series = {Molecular ecology}, volume = {25}, journal = {Molecular ecology}, publisher = {Wiley-Blackwell}, address = {Hoboken}, issn = {0962-1083}, doi = {10.1111/mec.13800}, pages = {4907 -- 4918}, year = {2016}, abstract = {Ancient DNA studies have revolutionized the study of extinct species and populations, providing insights on phylogeny, phylogeography, admixture and demographic history. However, inferences on behaviour and sociality have been far less frequent. Here, we investigate the complete mitochondrial genomes of extinct Late Pleistocene cave bears and middle Holocene brown bears that each inhabited multiple geographically proximate caves in northern Spain. In cave bears, we find that, although most caves were occupied simultaneously, each cave almost exclusively contains a unique lineage of closely related haplotypes. This remarkable pattern suggests extreme fidelity to their birth site in cave bears, best described as homing behaviour, and that cave bears formed stable maternal social groups at least for hibernation. In contrast, brown bears do not show any strong association of mitochondrial lineage and cave, suggesting that these two closely related species differed in aspects of their behaviour and sociality. This difference is likely to have contributed to cave bear extinction, which occurred at a time in which competition for caves between bears and humans was likely intense and the ability to rapidly colonize new hibernation sites would have been crucial for the survival of a species so dependent on caves for hibernation as cave bears. Our study demonstrates the potential of ancient DNA to uncover patterns of behaviour and sociality in ancient species and populations, even those that went extinct many tens of thousands of years ago.}, language = {en} } @book{RodriguezQuilesyGarciaHabibBidalLotonetal.2019, author = {Rodr{\´i}guez-Quiles y Garc{\´i}a, Jos{\´e} A. and Habib, Michel and Bidal-Loton, Marie-Pierre and Leveau, Nicolas and Tassin, Martine and Verlinden, Dominique and Soria Torres, Carmen M. and Hoonhorst, Ingrid and Vancamp, Marielle and Dormoy, Alice and De Barelli, Tatiana}, title = {Bienfaits de la musique {\´a} l'{\´e}cole}, editor = {Rodr{\´i}guez-Quiles y Garc{\´i}a, Jos{\´e} A.}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-466-1}, issn = {1861-8529}, doi = {10.25932/publishup-42862}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-428627}, publisher = {Universit{\"a}t Potsdam}, pages = {166}, year = {2019}, abstract = {A l'heure o{\`u} l'{\´e}ducation musicale est remise en cause par les d{\´e}cideurs de certains pays de l'Union europ{\´e}enne, la collaboration internationale et interdisciplinaire est plus que jamais n{\´e}cessaire pour d{\´e}montrer l'erreur de ces attitudes. A cette fin, l'ouvrage rassemble les r{\´e}flexions de diff{\´e}rents sp{\´e}cialistes de trois pays europ{\´e}ens qui offrent leurs points de vue sous le prisme de l'{\´e}ducation musicale mais aussi des domaines des neurosciences, de la psychologie, de la logop{\´e}die et de la politique. Cette publication combine les r{\´e}sultats de travaux empiriques avec des propositions pratiques, ce qui la rend utile pour les chercheurs, les professeurs de musique et les orthophonistes.}, language = {fr} } @article{BernardiBerdjaDaniGuzmanetal.2021, author = {Bernardi, Rafael L. and Berdja, Amokrane and Dani Guzman, Christian and Torres-Torriti, Miguel and Roth, Martin M.}, title = {Restoration of images with a spatially varying PSF of the T80-S telescope optical model using neural networks}, series = {Monthly notices of the Royal Astronomical Society}, volume = {510}, journal = {Monthly notices of the Royal Astronomical Society}, number = {3}, publisher = {Oxford Univ. Press}, address = {Oxford}, issn = {0035-8711}, doi = {10.1093/mnras/stab3400}, pages = {4284 -- 4294}, year = {2021}, abstract = {Most image restoration methods in astronomy rely upon probabilistic tools that infer the best solution for a deconvolution problem. They achieve good performances when the point spread function (PSF) is spatially invariant in the image plane. However, this condition is not always satisfied in real optical systems. We propose a new method for the restoration of images affected by static and anisotropic aberrations using Deep Neural Networks that can be directly applied to sky images. The network is trained using simulated sky images corresponding to the T80-S Telescope optical model, a 80-cm survey imager at Cerro Tololo (Chile), which are synthesized using a Zernike polynomial representation of the optical system. Once trained, the network can be used directly on sky images, outputting a corrected version of the image that has a constant and known PSF across its field of view. The method is to be tested on the T80-S Telescope. We present the method and results on synthetic data.}, language = {en} }