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The photon time delay in magnetized medium magnetosphere
Author(s) -
Jorge Adrián William Romero,
Rodríguez Querts Elizabeth,
Pérez Martínez Aurora,
Pérez Rojas Hugo
Publication year - 2021
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.202113938
Subject(s) - physics , magnetosphere , photon , magnetic field , quantum electrodynamics , magnetic dipole , degenerate energy levels , neutron star , dipole , computational physics , atomic physics , quantum mechanics
We calculate the time delay for photons propagating in a charged electron‐positron gas at finite temperature and in an external magnetic field with the final aim of studying the effect for photons in a neutron star magnetosphere. The dispersion relations are solved in terms of analytic functions, in the degenerate, strong magnetic field, and ultra‐relativistic limit. For fixed values of frequency, temperature, and chemical potential, we study the dependence of photon time delay with the magnetic field strength, as well as with distance. For the latter, we adopt a magnetic dipole configuration and obtain that, according to the expectation, photons of higher energy experience a minor time delay. Obtained results are compared with the previous ones obtained for the photon time delay in vacuum magnetosphere.