Time warp created by a pulsar

Excerpt from popsci.com

A star has slipped out of view thanks to the space-time warp it creates as it orbits.

The disappearing star is part of a binary star system called J1906. It’s a pulsar, which means it’s a rotating neutron star, the of a massive star collapsing in on itself. Researchers have been studying the young pulsar for five years to determine what kind of companion star was orbiting around it. That is, until recently, when the pulsar vanished.

As a pulsar rotates, it emits a of electromagnetic radiation, sort of like coming from a lighthouse. Scientists use radio telescopes that pick up on the pulses coming from . But as scientists watched J1906, the pulsar began to slip off the radar. It seems that as the pulsar spins around its companion star, the mass of the companion star makes it sink into a dip in space-time, so that its radio waves can no longer reach Earth. The concept is called geodetic precession, which, according to NASA, uses Einstein’s of relativity to understand how massive objects like the Earth curve the space around them, influencing the local space-time fabric.  

The video above illustrates the sinkhole in space created by the pulsar as it orbits the second star. As the warp , the pulsar’s axis (demonstrated by the arrows), so its radio pulses no longer aim toward Earth’s radio telescopes.

But the pulsar won’t be out of for forever. Lead Joeri van Leewuen from the Netherlands Institute for Radio Astronomy estimates the star will come back into sight in less than 160 years.

The team’s findings were released Thursday in the Astrophysical in conjunction with the Astronomical Society’s 225th meeting.