We study the newly discovered variable star GSC 4560–02157. CCD photometry was performed in 2013–2014 at the Tien Shan Astronomical Observatory,and a spectrum
Recently,some studies showed that the GeV gamma-ray excess signal from the central Milky Way can be explained by the annihilation of ~ 40 GeV dark matter throug
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