The effect of the Galactic Cosmic Ray (GCR) flux on Earth's climate is highly uncertain. Using a novel sampling approach based around observing periods of significant cloud changes, a statistically robust relationship is identified between the rate of GCR flux and the most rapid mid-latitude (60°-30° N/S) cloud decreases operating over daily

Light curves in the CoRoT white, blue, green, and red channels. The CoRoT bands are not simply related to any standard photometric systems. Because the applied corrections are channel-specific, the flux in the white channel is not the exact sum of the blue, green, and red fluxes. Also provided are the radial velocity measurements by the SOPHIE and

The 11-year activity cycle of the Sun is a consequence of a dynamo process occurring beneath its surface. We analyzed photometric data obtained by the CoRoT space mission, showing solarlike oscillations in the star HD49933, for signatures of stellar magnetic activity. Asteroseismic measurements of global changes in the oscillation frequencies and

CBET 2411 available at Central Bureau for Astronomical Telegrams.

Not Available

We observed the black hole candidate XTE J1752-223 (ATel #2258) with the William Herschel Telescope (WHT) and the ACAM imager/spectrograph at the Observatorio del Roque de los Muchachos, La Palma, Spain. Two R-band exposures of 60 and 200 s and one I-band exposure of 200 s were taken under photometric conditions and 1.0-1.2-arcsec seeing on Aug 8