Showing posts with label Low Frequency Array. Show all posts
Showing posts with label Low Frequency Array. Show all posts

Friday, November 21

The solar system may be racing through space 3 times faster than expected

An illustration of our solar system (not to scale). (Image credit: buradaki/iStock/Getty Images Plus)


Astronomers have discovered that the solar system may be moving through the cosmos over three times faster than was previously theorized. The discovery could have implications for the standard model of cosmology, our current best model to explain the structure, composition and evolution of the universe.


The team behind this research reached its conclusions using the Low Frequency Array (LOFAR) radio telescope network and two other radio telescopes to map the distribution of radio galaxies, which they then used to measure the motion of the solar system. Radio galaxies are galaxies that emit unusually strong radio waves from "lobes" that extend well beyond their visible structure of stars.


Saturday, August 2

Astronomers Discover Mysterious Radio Pulsing White Dwarf


A Team of astronomers have made a fascinating discovery that forces us to rethink our understanding of how dead stars behave. Using the powerful Low Frequency Array (LOFAR) radio telescope in the Netherlands, the team have found a white dwarf star that's doing something completely unexpected, sending out bright radio pulses in a strange, rhythmic pattern.

The star system, officially called ILT J163430+445010 (or J1634+44 for short), is located over 3,500 light years from Earth. What makes it extraordinary isn't just that it's sending radio signals, it’s how those signals behave. Every 14 minutes, this dead star emits radio pulses that have a bizarre twist, some waves spin in circles while others vibrate in straight lines. This rapid switching between different types of polarization has never been seen before in any white dwarf.