Detailed Information on Publication Record
2019
A new approximation of photon geodesics in Schwarzschild spacetime
LA PLACA, Riccardo, Pavel BAKALA, Luigi STELLA and Maurizio FALANGABasic 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
Language
English
Type of outcome
Článek v odborném periodiku
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Philosophy and Science in Opava
Tags
Tags
International impact
Změněno: 15/10/2019 08:55, RNDr. Pavel Bakala, Ph.D.
Abstract
V originále
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 .