Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Fiziev, P. P."'
Autor:
Fiziev, Plamen P.
We briefly consider the data of collaboration LIGO/VIRGO for gravitational waves (GW) and the recent observations of Event Horizon Telescope (EHT), and we discuss difficulties for finding the right theory of gravity and the nature of the observed Ext
Externí odkaz:
http://arxiv.org/abs/1912.13432
Autor:
Fiziev, Plamen P.
We present, for the first time, a correct solution of the Schwarzschild Massive Point (SMP) problem in {\em arbitrary} radial gauge and formulate the strict mathematical assumptions, which are necessary and sufficient for this. In GR, there exists a
Externí odkaz:
http://arxiv.org/abs/1912.11709
Autor:
Fiziev, Plamen P.
Publikováno v:
Physycs or Particles and Nuclei, Vol. 50 (6), pp. 944-972 (2019)
Utilizing various gauges of the radial coordinate, we give a General Relativistic (GR) description of static spherically symmetric spacetimes with a massive point source and vacuum outside this singularity. We show that in GR there exists a two-param
Externí odkaz:
http://arxiv.org/abs/1911.04949
Autor:
Fiziev, Plamen P
Using an effective one body approach we describe in detail gravitational waves from classical three body problem on a non-rotating straight line and derive their basic physical characteristics. Special attention is paid to the irregular motions of su
Externí odkaz:
http://arxiv.org/abs/1609.02604
Autor:
Fiziev, Plamen, Marinov, Kalin
Publikováno v:
Astrophys Space Sci (2017) 362: 8
The model of minimal dilatonic gravity (MDG), called also the massive Branse-Dicke model with $\omega =0$, is an alternative model of gravitation, which uses one Branse-Dicke gravitation-dilaton field $\Phi$ and offers a simultaneous explanation of t
Externí odkaz:
http://arxiv.org/abs/1608.06089
Autor:
Fiziev, P. P.
We present new solution of the the connection problem for local solutions to the general Heun equation. Our approach is based on the symmetric form of the Heun's differential equation \cite{Fiziev14,Fiziev16} with four different regular singular poin
Externí odkaz:
http://arxiv.org/abs/1606.08539
Autor:
Staicova, Denitsa, Fiziev, Plamen
Publikováno v:
Springer Proc.Math.Stat. 191 (2016) 303-308
The Heun functions are often called the hypergemeotry successors of the 21st century, because of the wide number of their applications. In this proceeding we discuss their application to the problem of perturbations of rotating and non-rotating black
Externí odkaz:
http://arxiv.org/abs/1601.04021
Autor:
Fiziev, P P
In this rather popular paper we stress some basics of the theory and the huge amount of applications of the Heun functions, as well as the still existing basic unsolved problems. The point is to attract more attention to this modern powerful tool for
Externí odkaz:
http://arxiv.org/abs/1512.04025
Autor:
Fiziev, Plamen Petkov
We consider singularities of static spherically symmetric objects in minimal dilatonic gravity. They are only partially studied and purely understood even in the simplest models of extended gravity. We introduce the proper form of the structure equat
Externí odkaz:
http://arxiv.org/abs/1512.03931
Autor:
Staicova, Denitsa, Fiziev, Plamen
Publikováno v:
Bulgarian Astronomical Journal 23, 83, 2015
The proper understanding of the electromagnetic counterpart of gravity-waves emitters is of serious interest to the multimessenger astronomy. In this article, we study the numerical stability of the quasinormal modes (QNM) and quasibound modes (QBM)
Externí odkaz:
http://arxiv.org/abs/1511.09081