Optically Bright Extragalactic Radio Sources

It is expected that the European Space Agency mission Gaia will make possible to determine coordinates in the optical domain of more than 500,000 quasars. In 2006, a radio...预计欧洲空间局（European Space Agency）的盖亚（Gaia）任务将能够测定超过50万个类星体（quasars）的光学波段坐标。2006年，一项射电……