Magnetars: Magnetic Field Strongest in The Universe

Neutrons stars are the remnants of massive stars (about 10-50 solar masses) which had collapsed on itself. These stars are composed of neutrons (subatomic particles are not charged), with a mass greater than the mass of the Sun (1.35 -2.1 solar masses), but only 20km in diameter.

Neutrons stars are the remnants of massive stars (about 10-50 solar masses) which had collapsed on itself. These stars are composed of neutrons (subatomic particles are not charged), with a mass greater than the mass of the Sun (1.35 -2.1 solar masses), but only 20km in diameter.

This star is very dense and even a teaspoon of neutron star matter can weigh up to 100 million tons. Other characteristics of the neutron star is a rapid rotation and strong magnetic field. Magnetar is a class in Neutrons Stars with ultra-strong magnetic field, estimated thousands of times stronger than normal neutron stars and made them the most powerful magnet in the cosmos. But why magnetars can seem to shine in X-ray vision is still a question for astronomers.

This time, data from the XMM-Newton and Integral Orbiting observatories are used to test the X-ray component of the magnetar. Until now there are 15 magnetars are found. Five of which are known as soft gamma repeaters (SGRs) because they give off bursts of sporadic (approximately 0.1 seconds) weak-energy gamma rays and X-ray bursts are powerful. The remaining 10 other magnetars associated as anomalous X-ray pulsars or AXP’s.

Although SGRs and AXP’s was originally estimated as a different object, but now they are known to have the same characteristics and activities that occur in it comes from a strong magnetic field.

Magnetars are neutron stars differ from normal due to the magnetic field in magnetars is expected very strong and able to twist the crust of the star. As a circuit energized by a giant battery, the ability to twist in magnetars can produce currents in the form of clouds of electrons that flow around the star. These currents interact with the radiation coming from the stellar surface and generate X-rays. Until now the researchers are still not able to test the predictions that they make because it is not possible to produce ultra-strong magnetic fields in laboratories on Earth.

Well to understand this phenomenon, a team led by Dr. Nanda Rea from the University of Amsterdam menggunakandata of XMM-Newton and Integral to find the electron cloud around the magnetar meeting for the first time.

Rea’s team did find evidence that large electron currents do exist and can be measured density which did in fact thousands of times stronger than normal pulsars. They also megukur type when the current velocity of electrons is weakened. With this data made the relationship between the phenomena derived from observations with the fisisnya. This is an important key in solving the riddle of the sky on this one object.

Currently Rea and his team are trying to build and test a model that could provide more detail for further understanding of the influence of such strong magnetic fields on magnetars.

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