WASHINGTON (Dow Jones)-The White House is preparing to launch a Spanish-language version of its Web site, Whitehouse.gov, by the end of the year, according to the company doing its recruiting.Earlier this week, Rock Creek Strategic Marketing sent out four job

We report the discovery of a component in an XMM-Newton satellite light curveof the BL Lacertae object S5 0716+714 which shows quasi-periodic oscillations(QPOs) of ~ 30 minutes. Both periodogram and wavelet analyses give consistentresults. This quasi-period is similar to those

The composition of ultra-high energy (UHE) cosmic rays E>10^17 eV is stillunknown. The observation of UHE photons would extend the observedelectromagnetic spectrum to highest energy and open a new channel formultimessenger observations in the universe. Current limits on the photon

The emission of cold dust grains at long wavelengths will soon be observed bythe Planck and Herschel satellites and provide new constraints on the nature ofinterstellar dust. The microwave anomalous emission, proposed to be due tospinning PAHs, should help to

Hadronic cross sections at ultra-high energy have a significant impact on thedevelopment of extensive air shower cascades. Therefore the interpretation ofair shower data depends critically on hadronic interaction models thatextrapolate the cross section from accelerator measurements to the highestcosmic ray

We describe a modified form of Smoothed Particle Hydrodynamics (SPH) in whichthe specific thermal energy equation is based on a compatibly differencedformalism, guaranteeing exact conservation of the total energy. We compare theerrors and convergence rates of the standard and compatible