The Chandra Multiwavelength Plane (ChaMPlane) Survey is a project to identify a large sample of serendipitous X-ray sources in the galactic plane (|b| ~ 10o), including cataclysmic variables, quiescent low mass X-ray binaries (qLMXBs: including both black hole and neutron star systems), Be X-ray binaries and stellar coronal sources (see Grindlay

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It is presently widely accepted that the solar low l p modes show asymmetric profiles when their power spectrum is analysed and that the fact of fitting symmetric profiles yields systematic effects in the obtained frequencies which could affect the results of inversions. In this paper the low l p-mode profiles are analysed using wavelets to denoise

The Chandra discovery of an X-ray bright jet in the "first light" distant quasar PKS 0637-752 showed that the X-rays can be energetically dominant even at large distances from the core, and sparked renewed interest in jet physical properties. We recently suggested that the high X-ray luminosities of the jets of PKS 0637-752 and the well-known

For two sunspot groups observed in June 1992 we analyze the center-to-limb variation and height dependence of various geometrical parameters describing the Wilson effect by using continuum observations and simultaneously obtained images of the degree of polarization.

We measure the radio luminosity function (RLF) of steep-spectrum radio sources using three redshift surveys of flux-limited samples selected at low (151 and 178MHz) radio frequency, low-frequency source counts and the local RLF. The redshift surveys used are the new 7C Redshift Survey (7CRS) and the brighter 3CRR and 6CE surveys totalling 356