·BHs in binary systems·20+ firmly identified so far·Knowing the mass·Stringent constraints on stellar evolution model·Required for BH spin measurement via
LiteBIRD is a satellite to map the polarization of the cosmic microwave background (CMB) radiation over the full sky at large angular scales with unprecedented
The large number of recent high-resolution observations shows that protoplanetary disks have a various kind of "structures" in their properties.For example,SMA