Science
Astronomers observe potential evidence of quantum vacuum birefringence near magnetar
Joint radio and X-ray observations of magnetar 1E 1547.0-5408 align with predictions of a nearly 90-year-old quantum theory.
The short version
- Researchers analyzing light from magnetar 1E 1547.0-5408 observed polarization alignment in radio and X-ray emissions consistent with vacuum birefringence.
- The quantum phenomenon, predicted by Werner Heisenberg nearly 90 years ago, posits that extreme magnetic fields alter how light moves through virtual particles in empty space.
- Confirmation of the finding requires additional observations and advanced computer simulations to rule out alternative physical causes.
Key facts
- A study led by George Washington University graduate student Rachael E. Stewart and published in Nature reports potential evidence of vacuum birefringence near magnetar 1E 1547.0-5408.[ScienceDaily]
- Vacuum birefringence is a quantum effect predicted by Werner Heisenberg nearly 90 years ago involving virtual particles interacting with light in strong magnetic fields.[ScienceDaily]
- The research integrated data from CSIRO's Murriyang radio telescope, NASA's Imaging X-ray Polarimetry Explorer (IXPE), and the NICER X-ray telescope.[ScienceDaily]
- Measurements indicated that magnetar 1E 1547.0-5408's magnetic and rotational axes are almost aligned, offering a near pole-on orientation favorable for observing the effect.[ScienceDaily]
- Both high-polarization X-rays and radio waves showed oscillation directions aligned with the magnetar's magnetic field.[ScienceDaily]
What remains uncertain
- Researchers note that further observations and computer simulations are required to verify whether the recorded signals definitively stem from vacuum birefringence or another physical mechanism.[ScienceDaily]
Sources
- Scientists may have finally caught “empty” space changing lightScienceDaily - Science