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Transient high energy pulses from magnetars

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Transient high energy pulses from magnetars

Scientists have found the first evidence to understand the transient high-energy vibrations emitted by magnetars.

  • A magnetar is a type of neutron star. Normally in a neutron star, the magnetic field is trillions of times greater than the Earth’s magnetic field. However, the magnetic field in a magnetar can be up to 1000 times stronger.
  • Neutron stars form when a massive star (a star with a core between 1 and 3 solar masses) runs out of fuel and gradually disappears.
  • It is to be noted that in this process each proton and electron bond to form a neutron.
  • High-mass stars continually merge into stellar-mass black holes.
  • Magnetars tolerate strong explosions. Little is known about the unpredictable nature of these eruptions and active for short durations of only one-tenth of a second.
  • Recently, scientists have discovered the first evidence to understand these explosions.
  • It is thought that explosions in magnetars can be caused by instability in their magnetosphere or by a type of earthquake (star-quake) originating in their crust.
  • These star quakes create waves (called Alfven waves) in the magnetars of magnetars.
  • These waves dissipate energy while interacting with each other.

Source – The Hindu

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