In mid-September, a
space telescope, "Swift" has found a rare celestial phenomenon - a
new X-ray, the appearance of which specify the presence of previously unknown
black hole (BH) of stellar mass.
The facility is named
Swift J1745-26 in accordance with its coordinates in the sky, and the new is a
few degrees away from the center of our galaxy in the direction of the
constellation Sagittarius. While astronomers to calculate the exact distance to
the object, but they suggest that it is from us at a distance of 20,000 to
30,000 light-years away in the inner region of our Milky Way galaxy.
X-ray nova is a brief
flash of X-rays observed in the sky for several days, after which it fades over
several months. X-ray nova is different from the usual new that the central
component in the first of these is not a white dwarf, a neutron star or a black
hole. The mechanism of its occurrence is that the fall of the substance on the
black hole is uneven, and in some regions of the accretion disk is an
accumulation of the substance. Upon reaching a certain critical mass of matter
- like water, which breaks the dam - is collapsing on the BH, and the system
settles down to the next such event.
The tremendous energy
of the observed flare, after reaching its peak of 18 September than 10,000
electron volts, and the long persistence allowed astronomers to identify it as
a new X-ray at the center of a black hole.
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