Position determination and strong field parallax effects for photon emitters in the Schwarzschild spacetime |
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Authors: | Donato Bini Andrea Geralico Robert T Jantzen |
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Institution: | 1.Istituto per le Applicazioni del Calcolo “M. Picone,” CNR,Rome,Italy;2.ICRANet,Pescara,Italy;3.INFN, Sezione di Napoli,Napoli,Italy;4.Department of Mathematics and Statistics,Villanova University,Villanova,USA |
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Abstract: | Position determination of photon emitters and associated strong field parallax effects are investigated using relativistic optics when the photon orbits are confined to the equatorial plane of the Schwarzschild spacetime. We assume the emitter is at a fixed space position and the receiver moves along a circular geodesic orbit. This study requires solving the inverse problem of determining the (spatial) intersection point of two null geodesic initial data problems, serving as a simplified model for applications in relativistic astrometry as well as in radar and satellite communications. |
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