We present the results of MASTER Global Robotic Net optical observations of LIGO/Virgo S200224ca error-box (O3 set). We observed 380 square degrees inside the 3σ error box during 1 month. We present optical transients found by MASTER auto-detection system during this inspection. They are not the optical counterparts, but the result of MASTER

Context. A detailed study of the Galactic bulge stellar population necessarily requires an accurate representation of the interstellar extinction, particularly toward the Galactic plane and center, where severe and differential reddening is expected to vary on sub-arcmin scales. Although recent infrared surveys have addressed this problem by

We present 33 transit minimum times of 20 transiting planets discovered by the CoRoT space mission. These have been obtained from ground-based observations since the missionís end in 2012, with the objective to maintain the ephemeris of these planets and to identify potential transit time variations. Twelve of the observed planets are in the CoRoT

LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics. JAXA selected LiteBIRD in May 2019 as a strategic large-class (L-class) mission, with its expected launch in the late 2020s using JAXA's H3 rocket

We report the discovery of a cold planet with a very low planet/host mass ratio of q = (4.09 ± 0.27) × 10 -5, which is similar to the ratio of Uranus/Sun (q = 4.37 × 10 -5) in the solar system. The Bayesian estimates for the host mass, planet mass, system distance, and planet-host projected separation are M host = 0.76 ± 0.40M ☉, M planet = 10.3 ±

MAGIC is a system of two 17m diameter Imaging Atmospheric Cherenkov Telescopes (IACTs) situated on the observatory of the Roque de los Muchachos on the island of La Palma, 2200m asl. MAGIC is currently in operation for the observation of VHE gamma-ray sources. Here we report the installation of a system to perform intensity interferometry