The group of international scientists from China and Australia for the first time set up huge neutron stars at the time of establishment. This discovery will help better understand the history of these mysterious objects and explain the data about the consolidation of neutron stars recorded by gravitational waves. The study was published in the Journal of Natural Astronomical Science (Natastro).
Neutron stars are the superficial remnants of big stars to end their lives with a supernatural explosion. Their mass is usually from one to two sun blocks, but they are compressed into a ball with a diameter of only about 10 km.
So far, the mass of a neutron star can be measured in dual systems, in which it interacts with another object, for example, a white dwarf or another neutron star. However, in such systems, a neutron star often adds mass due to the accretion, which makes it difficult to determine its original weight at birth.
Researchers have analyzed data on 90 neutron stars in dual systems, using probability methods to calculate for accumulated volume after formation. As a result, they discovered that neutrons are often born with a weight of about 1.3 solar mass and heavy neutron stars rather than less common.
Our approach allows you to first understand many neutron stars at birth, this is a long -term issue in a astronomical physics house, Professor Sycjiang Zhu from Beijing Pedagogical University.