LA PLACA, Riccardo, Pavel BAKALA, Luigi STELLA and Maurizio FALANGA. A new approximation of photon geodesics in Schwarzschild spacetime. Online. Research Notes of the American Astronomical Society. 2019, vol. 3, No 7, 2 pp. Available from: https://dx.doi.org/10.3847/2515-5172/ab3227.
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Basic information
Original name A new approximation of photon geodesics in Schwarzschild spacetime
Authors LA PLACA, Riccardo, Pavel BAKALA, Luigi STELLA and Maurizio FALANGA.
Edition Research Notes of the American Astronomical Society, 2019.
Other information
Original language English
Type of outcome Article in a journal
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.3847/2515-5172/ab3227
Tags NENI VE WoS-SCOPUS
Tags International impact
Changed by Changed by: RNDr. Pavel Bakala, Ph.D., učo 25771. Changed: 15/10/2019 08:55.
Abstract
In this research note we introduce a new approximation of photon geodesics in Schwarzschild spacetime which is especially useful to describe highly bent trajectories, for which the angle between the initial emission position and the line of sight to the observer approaches π : this corresponds to the points behind the central mass of the Schwarzschild metric with respect to the observer. The approximation maintains very good accuracy overall, with deviations from the exact numerical results below 1% up to the innermost stable circular orbit (ISCO) located at 6 GM/c2 .
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