Pulsar Spins 122 Times Per Second at Milky Way’s Core

Key Takeaways

1. Researchers are still uncovering secrets about the Milky Way, despite extensive exploration.
2. The first image of the Milky Way’s supermassive black hole, Sagittarius A, was captured in 2022.
3. Pulsars are rapidly rotating neutron stars, with PSR J1748-2446ad being the fastest known, spinning 716 times per second.
4. The Breakthrough Listen project found a pulsar candidate that rotates 122 times per second, but only one candidate was identified, surprising researchers.
5. Further observations with advanced telescopes are needed to confirm the existence of the newly discovered pulsar and enhance our understanding of the galaxy.

Although researchers have been exploring the Milky Way for a long time, many aspects of our galaxy still hold secrets. In 2022, astronomers succeeded in capturing the first image of its supermassive black hole called Sagittarius A. Nearby, a pulsar with a very strong magnetic field could be found.

What are Pulsars?

Pulsars are neutron stars that rotate at incredibly high speeds. A notable example is PSR J1748-2446ad, which is situated around 18,000 light-years away and spins 716 times every second, making it the fastest pulsar identified so far. These pulsars have a mass equal to twice that of our sun, all packed into a diameter of just 12 miles (about 19 kilometers). They can be detected because of the beams of electromagnetic radiation that come from their poles.

Recent Findings

From 2021 to 2023, scientists working on the Breakthrough Listen project utilized the Green Bank Telescope (GBT) and found a pulsar that rotates around 122 times per second. Nonetheless, the few pulsars found surprised the researchers. As Karen Perez points out:

“We should have been able to detect about 10% of millisecond pulsars and 50% of canonical, slow pulsars, if the pulsar population in the Galactic Center is like that of the larger Milky Way. Even with this level of sensitivity, we only found one candidate, named the Breakthrough Listen Pulsar (BLPSR), which is still under ongoing study.”

Next Steps for Validation

This discovery needs to be confirmed, which requires further observations, especially with the help of the Very Large Array (ngVLA) and Square Kilometre Array (SKA) telescopes. If the existence of this pulsar is validated, astronomers will gain deeper insights into our galaxy and others throughout the universe.

Source:
Link