Extended bodies moving on geodesic trajectories

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00562154" target="_blank" >RIV/67985815:_____/22:00562154 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s10714-022-02985-6" target="_blank" >https://doi.org/10.1007/s10714-022-02985-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10714-022-02985-6" target="_blank" >10.1007/s10714-022-02985-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Extended bodies moving on geodesic trajectories

Popis výsledku v původním jazyce

This work investigates whether an extended test body obeying the Mathisson-Papapetrou-Dixon equations under the Ohashi-Kyrian-Semerák spin supplementary condition can follow geodesic trajectories in curved spacetimes. In particular, we explore what are the requirements under which pole-dipole and pole-dipole-quadrupole approximated bodies moving in the Schwarzschild or Kerr spacetimes can follow equatorial geodesic trajectories. We do this exploration thoroughly in the pole-dipole case, while we focus just on particular trajectories in the pole-dipole-quadrupole case. Using the Ohashi-Kyrian-Semerák spin supplementary condition to fix the center of the mass of a pole-dipole body has the advantage that the hidden momentum is eliminated. This allows the four-velocity to be parallel to the four-momentum, which provides a convenient framework for our investigation. We discuss how this feature can be recovered at a pole-dipole-quadrupole approximation and what are the consequences.

Název v anglickém jazyce

Extended bodies moving on geodesic trajectories

Popis výsledku anglicky

This work investigates whether an extended test body obeying the Mathisson-Papapetrou-Dixon equations under the Ohashi-Kyrian-Semerák spin supplementary condition can follow geodesic trajectories in curved spacetimes. In particular, we explore what are the requirements under which pole-dipole and pole-dipole-quadrupole approximated bodies moving in the Schwarzschild or Kerr spacetimes can follow equatorial geodesic trajectories. We do this exploration thoroughly in the pole-dipole case, while we focus just on particular trajectories in the pole-dipole-quadrupole case. Using the Ohashi-Kyrian-Semerák spin supplementary condition to fix the center of the mass of a pole-dipole body has the advantage that the hidden momentum is eliminated. This allows the four-velocity to be parallel to the four-momentum, which provides a convenient framework for our investigation. We discuss how this feature can be recovered at a pole-dipole-quadrupole approximation and what are the consequences.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

General Relativity and Gravitation

ISSN

0001-7701

e-ISSN

1572-9532

Svazek periodika

54

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

25

Strana od-do

113

Kód UT WoS článku

000860217600001

EID výsledku v databázi Scopus

2-s2.0-85138703693