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A number of important processes taking place around strong shocks in supernova remnants (SNRs) depend on the shock obliquity. The measured synchrotron flux is a function of the aspect angle between interstellar magnetic ...

Integral field spectroscopy obtained with the Potsdam Multi-Aperture Spectrophotometer Fiber Package (PPak) and the 3.5-m telescope at the Calar Alto Observatory has been used to study an outer H II region complex in the...

Since the middle of the twentieth century, the study of migration in Latin America has evolved in response to the themes and debates dominating the social sciences at specific points in time. This chapter provides an ove...