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Title of Journal: Nuov Cim B

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Abbravation: Il Nuovo Cimento B (1971-1996)

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Società Italiana di Fisica

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DOI

10.1007/bf01128455

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1826-9877

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Existence and stability criteria for circular geod

Authors: A Armenti
Publish Date: 2007/11/04
Volume: 25, Issue: 1, Pages: 442-448
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Abstract

Circular timelike geodesics in the vicinity of a ReissnerNordström black hole of massm and chargeq are considered These geodesics exist for allr3m/2 1+1−8q2/9m21/2 and are stable for allrrs wherers is the largest real root ofr3−6mr2+9q2r−4q4/m=0 Forq2=0 these expressions reduce to the familiar Schwarzschild resultsr3m andr6m respectively forq2=m2 they reduce tor2m andr4mРассматриваются круговые времениподобные геодезические линии в окрестности черной дыры РейснераНордстрема с массойm и зарядомq Эти геодезические линии существуют для всехr3m/21+1−8q2/9m21/2 и являются стабильными для всехrrs гдеrs есть наибольший вещественный корень уравненияr3−6mr2+9q2r−4q4/m=0 Дляq2=0 эти выражения сводятся к известным результатам Шварцшильдаr3m иr6m соответственно Дляq2=m2 они сводятся кr2m иr4mSi prendono in considerazione geodetiche temporali circolari in prossimità di una buca nera di Reissner e Nordström di massam e caricaq Tali geodetiche esistono per ognir3m/21+1−8q2/9m21/2 e sono stabili per ognirrs in cuirs è la massima radice reale dir3−6mr2+9q2r−4q4/m=0 Perq2=0 queste espressioni si riducono ai soliti risultati di Schwarzschildr3m er6m rispettivamente perq2=m2 si riducono ar2m er4m

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  2. N = 1,2 supergravities in 2 + 1 dimensions as Chern-Simons theories
  3. Maximal acceleration and the time-energy uncertainty relation
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  8. Machian solution with matter injection in cosmology
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  10. The gyrofrequency of a charged particle in a constant electromagnetic field. II.—The general result
  11. Magnetic bloch functions
  12. Electromagnetic potential vectors and spontaneous symmetry breaking
  13. Triplet correlations in model liquids
  14. Gravitational-wave tail in Einstein’s linear theory
  15. On the hypothesis that quantum mechanics has a nonlocal structure
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  24. Four-dimensional symmetry from a broad viewpoint
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