![Pulsar PSR B1509-58 observed by Chandra in X-rays.](http://public.virgo-gw.eu/wp-content/grand-media/image/OG_Pulsar_Chandra_PSRB1509.jpg)
Advanced Virgo will search for gravitational waves coming from known pulsars (neutron stars from which we receive periodic light flashes).
A pulsar is observed at the center of the image: it is a small, dense object only 20 km in diameter. It is responsible for this beautiful X-ray nebula that spans 150 light years.
Credits: NASA/CXC/SAO/P.Slane, et al.