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New technique to detect magnetic fields inside stars
Using a technique similar to medical ultrasound, astrophysicists have for the first time developed a way to determine the presence of strong magnetic fields deep inside pulsating giant stars. Magnetic fields have important consequences in all stages of stellar evolution, from a star\'s formation to its demise.
New York: Using a technique similar to medical ultrasound, astrophysicists have for the first time developed a way to determine the presence of strong magnetic fields deep inside pulsating giant stars. Magnetic fields have important consequences in all stages of stellar evolution, from a star's formation to its demise.
The researchers used asteroseismology a discipline similar to seismology to track waves traveling through stars in order to determine their inner properties.
"We can now probe regions of the star that were previously hidden," said study co-lead author Matteo Cantiello, specialist in stellar astrophysics at University of California Santa Barbara's Kavli Institute for Theoretical Physics (KITP).
"The technique is analogous to a medical ultrasound, which uses sound waves to image otherwise invisible parts of the human body," Cantiello pointed out.
The study analysed data from the Kepler satellite, a space telescope that measures stellar brightness variations with very high precision.
