Frequencies, powers and damping rates of the solar p modes are all observed to vary over the 11-yr solar activity cycle. Here, we show that simultaneous variations in these parameters give rise to a subtle cross-talk effect, which we call the `devil in the detail', that biases p-mode frequencies estimated from analysis of long power frequency

Not Available

Aims:We report the discovery of a peculiar object observed serendipitously with XMM-Newton. We present its timing and spectral properties and investigate its optical counterpart. Methods: The light curve of the X-ray source, its spectrum, and the spectrum of the best optical counterpart are presented and analyzed. Results: The X-ray flux decreases

We present results from two Chandra imaging observations of Ross 154, a nearby flaring M dwarf star. During a 61 ks ACIS-S exposure, a very large flare occurred (the equivalent of a solar X3400 event, with LX=1.8×1030 ergs s-1) in which the count rate increased by a factor of over 100. The early phase of the flare shows evidence for the Neupert

Context: (Ultra)Luminous Infrared Galaxies [(U)LIRGs] are much more numerous at cosmological distances than locally, and are likely the precursors of elliptical galaxies. Studies of the physical structure and kinematics of representative samples of these galaxies at low redshift are needed in order to understand the interrelated physical processes

As part of a European Southern Observatory (ESO) Large Programme on the Very Large Telescope (VLT, Paranal, Chile) observations were obtained for over 700 stars using the Fibre Large Array Multi-Element Spectrograph (FLAMES), with the majority of these objects being O- or early B-type stars. Observations were taken towards three Galactic clusters