Kinetic Sunyaev-Zel’dovich(kSZ) stacking has great potential to become a powerful probe of missing baryons, due to advances in CMB experiments and galaxy surve
We investigate the potential of constraining the mass to light ratio of field galaxies using weak lensing shear and flexions. A suite of Monte Carlo simulations
Up to now,exact measurements of chromospheric magnetic fields have not been as successful as those done in the photosphere.We are currently engaging in diagnost
We report on an archival X-ray observation of the eclipsing RS CVn binary XY UMa(Porb ≈0.48 d). In two Chandra ACIS observations spanning 200 ks and almost fiv
After a brief reminder of the mechanism of gravitational lensing of extended sources, the particular case of the host galaxy of QSO RXJ0911, a high redshift (z~2