Multiwavelength observations of a TeV-Flare from W comae

We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z = 0.102) during a strong outburst of very high energy gamma-ray emission in 2008 June. The very high energy gamma-ray signal was detected by VERITAS on 2008 June 7-8 with a flux F(>200 GeV) =(5.7 0.6) × 10-11 cm-2 s -1, about three times brighter than during the discovery of gamma-ray emission from W Com by VERITAS in 2008 March. The initial detection of this flare by VERITAS at energies above 200 GeV was followed by observations in high-energy gamma rays (AGILE; E γ≥ 100 MeV), X-rays (Swift and XMM-Newton), and at UV, and ground-based optical and radio monitoring through the GASP-WEBT consortium and other observatories. Here we describe the multiwavelength data and derive the spectral energy distribution of the source from contemporaneous data taken throughout the flare. © 2009. The American Astronomical Society. All rights reserved

Chechnya: the causes of a protracted post-Soviet conflict

The conflict in Chechnya is one of the most protracted of all the post-Soviet conflicts and is the only violent secessionist conflict to have occurred within the Russia Federation. The article evaluates the main explanations for the conflict and challenges historicist and ‘ethnic’ war accounts. It presents an alternative analysis which focuses on the interrelationship and combined effect of history, contingency, the instrumentalization of conflict by political leaderships, intra-Chechen cleavages, political economy, sectional interests and international factors. The article views the 1994-6 and 1991-present wars as part of a continuum, and discusses how the dynamics of the conflict have changed over time, as new radicalising elements such as Islamic fundamentalism and Russian nationalism under Putin have become more salient