Measuring Magnetic Fields
![Gravitational lens diagram](https://public.nrao.edu/wp-content/uploads/2017/08/nrao17df07.jpg)
Artist’s conception of gravitational lens arrangement that allowed astronomers to measure a galaxy’s magnetic field. Magnetic fields affect radio waves that travel through them. Analysis of the VLA images showed a significant difference between the two gravitationally-lensed images in how the waves’ polarization was changed. That means, the scientists said, that the different regions in the intervening galaxy affected the waves differently.
Credit: Bill Saxton, NRAO/AUI/NSF; NASA, Hubble Heritage Team, (STScI/AURA), ESA, S. Beckwith (STScI). Additional Processing: Robert Gendler
Categories:
Galaxies
Part of Collections:
Image of the Week
Download Image download
Have you reviewed our Media Use Policy?
Yes, continue arrow_circle_right
Original TIFF | download | ||
Hi-Res Full-Size | 1170 x 658 | 292 KB | download |
Screensize File | 1024 x 576 | download |