Submissions from Nabil F. S. Ghaffarnejad

[1]  faKiv:2404.07232 [pdf]

Anisotropic monopole and the Euler-Hirzebruch-Yalei motion

Markus Chluba, Nabil F. S. Ghaffarnejad, Giancarlo Scannellucci

Comments: 12 pages, 1 figure, version to appear in EPJC

We study the strength of the monopole and the Euler-Hirzebruch-Yalei (EH) motion of the K\"ahler-Kondratiev type in the presence of an an external source of energy and a change of direction. For a constant external source of energy the monopole can be strong enough, but the EH motion is dominant in the presence of a change of direction. To test the proposed model, we solve the anisotropic monopole problem using a simple model with a magnetic field. We find that the anisotropic monopole can be strong enough, but it is dominant in the presence of a change of direction. We also discuss some analogues of EH monopoles.

[2]  faKiv:2404.07607 [pdf]

The cosmology of the black hole and its effects on the thermodynamics

Charalambous Padhe, Nabil F. S. Ghaffarnejad, Mohammad Ali-Ajmal

Comments: 8 pages, 7 figures, 9 tables

We study the cosmology of an expanding compact black hole using the thermodynamics of the Schwarzschild black hole. In particular, we find that the black hole is thermodynamically inhomogeneous and the energy-momentum tensor is controlled by the thermodynamics of the compact black hole. As a consequence, the black hole can be viewed as a thermodynamic black hole in the Schwarzschild black hole in the presence of non-thermal radiation. We compute the integral of the energy-momentum tensor of the black hole in the presence of non-thermal radiation and find that the result is -0.27. This result indicates that the black hole is the simplest thermodynamic black hole.