Observations of Wolf-Rayet Star Indicate Potential Magnetar Formation in Supernova

Subject: Science and Technology

Section: Space technology

Introduction:

Observations and stellar evolution models suggest a connection between a Wolf-Rayet star and magnetar production during a supernova.
This study offers insights into the formation process of magnetars, which are characterized by extremely powerful magnetic fields.

Magnetars:

Magnetars are a type of neutron star with magnetic fields trillions of times stronger than the sun’s.
Magnetars can induce starquakes, analogous to earthquakes on stars, releasing massive amounts of energy and radiation.

Wolf-Rayet Star and Supernova:

Wolf-Rayet stars are advanced-stage massive stars that have expelled their outer hydrogen layers and exposed their helium core.
Neutron stars, including magnetars, are born from the remnants of massive stars that have undergone supernova explosions.
The exact origin of magnetars remains a subject of scientific inquiry.
One hypothesis posits that amplification of the magnetic field within the parent star’s core during a supernova event could lead to the formation of a magnetar.
However, such strong magnetic fields have not been observed in massive, evolving stars that eventually become neutron stars.

Observation and Study Details:

The study conducted by Tomar Shenar and colleagues focuses on the binary system HD 45166.
This system comprises a main sequence star and a companion hot Wolf-Rayet star.
Binary system HD 45166 (artistic impression)