Explanation: What are black hole jets made of? Many
black holes in stellar systems are surely surrounded by disks of gas and plasma
gravitationally pulled from a close binary star companion. Some of this
material, after approaching the black hole, ends up being expelled from the
star system in powerful jets emanating from the poles of the spinning black
hole. Recent evidence indicates that these jets are composed not only electrons
and protons, but also the nuclei of heavy elements such as iron and nickel. The
discovery was made in system 4U1630-47 using CSIRO’s Compact Array of radio
telescopes in eastern Australia, and the European Space Agency's Earth-orbiting
XMM-Newton satellite. The 4U1630-47 star system is depicted above in an
artist's illustration, with a large blue star on the right and jets emanating
from a black hole in the center of the accretion disc on the left. Although the
4U1630-47 star system is thought to contain only a small black hole -- a few
times the mass of our Sun -- the implications of the results may be larger:
that black holes of larger sizes might also be emitting jets of massive nuclei
into the cosmos.
هیچ نظری موجود نیست:
ارسال یک نظر