Today’s News Technology Today – The discovery of an unknown and mysterious source of “gamma” radiation emission Source of the news – Al-Arab Today with details of the news The discovery of an unknown and mysterious source of “gamma” radiation:
Al Youm News – Cairo – Al Arab Al Youm
Neutron stars are known as the remnants of a supernova explosion consisting of compact material. Its diameter is about 20 km, and its weight is greater than the weight of the sun. As a result of its strong magnetic field and rapid rotation, it emits radio waves and gamma rays, making it similar to a space beacon. When these rays are directed towards Earth during the rotation of the neutron star, it becomes visible as a pulsating source of radio waves or gamma rays, and it is called a pulsar.
Larsa Nieder, a researcher at the Albert Einstein Institute, points out that for years experts have believed that there was a pulsar in PSR J2039 مركز5617, rotating very quickly.
According to the researchers, to process the information obtained during 11 years from the Fermi telescope and from the European Space Agency Gaia telescope with a single computer, it would have taken 500 years, but by uniting the efforts of the participants in the Einstein @ Home project, these results were obtained within only two months. The results showed that the neutron star in the J2039−5617 system rotates at 377 revolutions per second.
“There are two main processes in J2039-5617’s work: the pulsar warms up one side of its light moon, which appears brighter and bluish. The gravitational force of the pulsar deforms the moon,” said Dr. Colin Clark, head of the research team, from the Jodrell Bank Center for Astrophysics. As a result, the visible size of the star changes in its orbit. ”
Optical telescopes allowed the researchers to determine other characteristics of this external system, as it appeared that the orbital period of the system lasts 5.5 hours, and that the moon’s orbit changes slightly and unexpectedly with the passage of time, and its brightness changes depending on the position of the moon on any side of the star relative to the Earth.
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