Color Variability of the Blazar AO 0235+16

Multicolor (UBVRIJHK) observations of the blazar AO 0235+16 are analyzed. The light curves were compiled at the Turin Observatory from literature data and the results of observations obtained in the framework of the WEBT program (http://www.to.astro/blazars/webt/). The color variability of the blazar was studied in eight time intervals with a sufficient number of multicolor optical observations; JHK data are available for only one of these. The spectral energy distribution (SED) of the variable component remained constant within each interval, but varied strongly from one interval to another. After correction for dust absorption, the SED can be represented by a power law in all cases, providing evidence for a synchrotron nature of the variable component. We show that the variability at both optical and IR wavelengths is associated with the same variable source.Comment: 11 pages, 9 figures, 4 tables, accepted for publication in Astronomy Report

The Concept of the "Field" in Early Soviet Ethnography : A Northern Perspective

Peer reviewedPublisher PD

Evolutionism and Historical Particularism at the St. Petersburg Museum of Anthropology and Ethnography

The paper describes the early 20th century debates between several leading Russian anthropologists, including Lev Shternberg, on the best way of displaying artifacts in the newly refurbished Museum of Anthropology and Ethnology in St. Petersburg. These debates revealed major tensions and contradictions between evolutionism and historical particularism, as well as universalism and nationalism within Russian anthropology of that era