Researchers from the UK, USA and China showed that within the early development of the solar system of the protoplanetic disk about 4.5 billion years ago there was a gap. Article of the international team of scientists is published in the journal Science Advances.
Over the past few decades, scientists have discovered a mysterious difference in the composition of asteroids falling on Earth – the so-called “isotopic dichotomy”: as a rule, the celestial body contained only a certain combination of isotopes. It was assumed that this dichotomy was caused by a break in the protoplanetary disk of the early solar system.
Researchers from the Massachusetts Institute of Technology, Oxford University and the University of Qinghua rated with the help of squid (ultra-sensitive magnetometers) The power of magnetic fields in Honds – the rapidly hardened drops of the molten silicate substance – in two groups of meteorites-chondrites: “non-expensive”, which, as expected , come from the regions closest to the sun, and “carbon”, presumably arising in the region more remote from the shining. It turned out that the induction of the initial magnetic field of the second was stronger – about 100 microtels, compared with 50 (the same as the earth now).
The power of the magnetic field of the planetary system serves as a measure of its accretion rate – how much gas and dust it can pull to their center. Measurements of scientists show that the external region of the solar system accretion accretions much stronger than internal. According to the results of modeling, the researchers came to the conclusion that there was a gap between the two areas that reduced the amount of gas and dust attracted to the Sun. “Rales are often found in protoplanetary systems, and now we have shown that there was also a similar thing in our solar system,” said Kaue Borlin’s leading investigator.