Published in Astrophysics and Space Science
The recently observed anti-glitch of AXP 1E 2259+586 may be explained as the consequence of sudden accretion of retrograde matter. AXP/SGR are explained as single neutron stars accompanied by fallback matter from their natal supernovæ, including rocky or metallic planetesimals. The upper bounds on a glitch or anti-glitch in the giant outburst of SG...
Published in Astrophysics and Space Science
Transverse oscillatory motions and recurrence behavior in the chromospheric jets observed by Hinode/SOT are studied. A comparison is considered with the behavior that was noticed in coronal X-ray jets observed by Hinode/XRT. A jet like bundle observed at the limb in Ca II H line appears to show a magnetic topology that is similar to X-ray jets (i.e...
Published in Astrophysics and Space Science
In a novel approach for solving the equations of the Circular Restricted Three-Body Problem (CR3BP) first formulated in Ershkov (Acta Mech. 228(7):2719–2723, 2017a), we apply in this communication a procedure for solving the Euler-Poisson equations for the momentum equations of the CR3BP near the libration points for uniformly rotating planets havi...
Published in Astrophysics and Space Science
Spectroscopy of transiting exoplanets has revealed a wealth of information about their atmospheric compositions and thermal structures. In particular, studies of highly irradiated exoplanets at temperatures much higher than those found in our solar system have provided detailed information on planetary chemistry and physics because of the high leve...
Published in Astrophysics and Space Science
We consider a cosmological model based on a generalization of the equation of state proposed by Nojiri and Odintsov (2004) and Štefančić (2005, 2006). We argue that this model works as a dark fluid model which can interpolate between dust equation of state and the dark energy equation of state. We show how the asymptotic behavior of the equation of...
Published in Astrophysics and Space Science
This contribution is aimed at an analysis of the dynamics of free-electron density fluctuations in the ionospheric critical plasma frequency f0F2 by using some tools from the theory of nonlinear dynamical systems. The results suggest the existence of low-dimensional attractors that point to a characterization of the free electron density fluctuatio...
Published in Astrophysics and Space Science
We investigate the precessing and periodic orbits of timelike particles around a self-complete and Generalized-Uncertainty-Principle (GUP) black hole. After its marginally bound orbit and innermost stable circular orbit are found, we obtain the allowable conditions for the bound orbits. The relativistic periastron advance is worked out, and thereby...
Published in Astrophysics and Space Science
A family of unidentified infrared emission (UIE) bands has been observed throughout the Universe. The current observed spectral properties of the UIE bands are summarized. These properties are discussed in the frameworks of different models of the chemical carriers of these bands. The UIE carriers represent a large reservoir of carbon in the Univer...
Published in Astrophysics and Space Science
We report a model study on the effects of clouds on emission spectra of super-Venus planets. Our goal is to assess possible ways to identify characteristic spectral features due to clouds. We show that it is possible to distinguish an impact of H2SO4 clouds on the CO2 absorption band at 4.8 μm for temperature profiles with and without a thermal inv...
Published in Astrophysics and Space Science
