1,029 research outputs found
Fermions can also produce super-radiation phenomena
According to traditional theory, it is believed that Fermions do not exhibit
superradiation. However, when predetermined boundary conditions are in place,
there is a possibility of combining the wave function of coupled Fermions,
which can result in the emergence of superradiation phenomena. This article
presents a novel perspective, proposing that Fermions have the potential to
display superradiation phenomena. This implies that there is a broader scope
for investigating superradiation and its relationship with boundary conditions
Schwarzschild black hole can also produce super-radiation phenomena under f(R) Gravity and the cosmic censorship conjecture may be violated
This article suggests that Bose-Einstein condensation can occur without the
need for an energy barrier when the boundary conditions are set as
(where z is a positive integer). Under these conditions,
bosons can condense in the Schwarzschild black hole. The incident waves can
then be trapped and condensed within the black hole, generating a potential
barrier near the event horizon. This suggests that Schwarzschild black holes
under f(R) Gravity can also exhibit superradiance, which raises the possibility
of violating the cosmic censorship conjecture. It should be noted that the
natural unit system is used in this article
The Quantum and thermodynamic properties of dyonic RN-like black holes
The effect of magnetic fields on black hole superradiance is an exciting
topic with possible astrophysical applications. A dyonic RN-like black hole is
not asymptotically flat. It describes a black hole immersed in an
asymptotically uniform magnetic field. This paper discusses the superadditive
stability of binary RN black holes, asymptotically flat, band-like black holes.
This article introduces the above condition into dyonic RN-like black holes if
a dyonic RN-like black hole satisfies the requirement of , When
,particularly ,the dyonic RN-like black hole is superradiantly stable at
that time.Scalars can be seen as combinations of positive/negative powers of a
base, much like the decimal system. This principle is key in math and
computing, from number systems to Fourier series (linked to ). Dyonic
RN-like black holes show no phase transition
Calculating the Hawking Temperatures of Kerr-Newman Black Holes in the f(R) Gravity Models with the RVB Method
In this study, we conducted a comparison between the RVB method and the
conventional method discussed in previous literature for calculating the
Hawking temperature of Kerr-Newman black holes under f(R)
gravity\cite{9,10,11}. Our research findings are in agreement with the results
presented in the literature\cite{17}, with only a variation in the integration
constant. Through the comparison of these two methods, we arrived at consistent
conclusions.After conducting a thorough comparison between the RVB method and
the temperature Green's function method, we have found that these two
approaches are fundamentally identical. This significant finding highlights the
high level of consistency between the temperature Green's function method and
the RVB method
Multi-epoch, multi-frequency VLBI study of the parsec-scale jet in the blazar 3C 66A
We present the observational results of the Gamma-ray blazar, 3C 66A, at 2.3,
8.4, and 22 GHz at 4 epochs during 2004-05 with the VLBA. The resulting images
show an overall core-jet structure extending roughly to the south with two
intermediate breaks occurring in the region near the core. By model-fitting to
the visibility data, the northmost component, which is also the brightest, is
identified as the core according to its relatively flat spectrum and its
compactness. As combined with some previous results to investigate the proper
motions of the jet components, it is found the kinematics of 3C 66A is quite
complicated with components of inward and outward, subluminal and superluminal
motions all detected in the radio structure. The superluminal motions indicate
strong Doppler boosting exists in the jet. The apparent inward motions of the
innermost components last for at least 10 years and could not be caused by
new-born components. The possible reason could be non-stationarity of the core
due to opacity change.Comment: 24 pages, 4 figure
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