24 research outputs found
Capture of the free-floating planets and primordial black holes into protostellar clouds
The capture of the free-floating planets and primordial black holes into a
collapsing protostellar cloud is considered. Although the last stage of rapid
contraction leading to the star formation lasts for a relatively short time
years, during this time there is a strong change in the
gravitational potential created by the movement of the entire cloud's mass
(). As a result, the probability of capturing an object into a
contracting cloud is comparable to the probability of capturing into an already
formed planetary system. Taking into account the collapse of the cloud
increases by 70% the full probability of the planets capture at the orbits with
large semi-axis au. Capture in the cloud can explain the wide inclined
orbit of the supposed 9th planet in the solar system. At the same time, the
probability of primordial black holes capturing from the galactic halo into a
contracting cloud is extremely small.Comment: 5 pages, 3 figure
Escape from a black hole with spherical warp drive
In this paper, a class of the warp drive (WD) type metrics is proposed in the
form of spherical and plane waves or shells. In particular, these metrics can
describe the passage of spherical WD through the horizon of a black hole from
the inside out. In this metrics, non-singular evolution of physical fields is
possible, which is demonstrated by examples of scalar, vector and fermion
fields. The passage of a warp-wave through the fields is accompanied by
soliton-like configurations (kinks). The limiting case of Planck-scale WD can
lead to the evaporation of singularities inside black holes with the escape of
particles and information into outer space, and the EPR=WD conjecture can also
be proposed.Comment: 7 pages, 2 figures, misprints correcte