SCHEE, Jan and Zdeněk STUCHLÍK. Gravitational lensing and ghost images in the regular Bardeen no-horizon spacetimes. Journal of Cosmology and Astroparticle Physics. GB - Spojené království Velké Británie a, 2015, No 6, p. "048-1"-"048-46", 46 pp. ISSN 1475-7516. Available from: https://dx.doi.org/10.1088/1475-7516/2015/06/048. |
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@article{46140, author = {Schee, Jan and Stuchlík, Zdeněk}, article_location = {GB - Spojené království Velké Británie a}, article_number = {6}, doi = {http://dx.doi.org/10.1088/1475-7516/2015/06/048}, keywords = {modified gravity; gravitational lensing; no-horizon spacetimes}, language = {eng}, issn = {1475-7516}, journal = {Journal of Cosmology and Astroparticle Physics}, title = {Gravitational lensing and ghost images in the regular Bardeen no-horizon spacetimes}, url = {https://iopscience.iop.org/article/10.1088/1475-7516/2015/06/048}, year = {2015} }
TY - JOUR ID - 46140 AU - Schee, Jan - Stuchlík, Zdeněk PY - 2015 TI - Gravitational lensing and ghost images in the regular Bardeen no-horizon spacetimes JF - Journal of Cosmology and Astroparticle Physics IS - 6 SP - "048-1"-"048-46" EP - "048-1"-"048-46" SN - 14757516 KW - modified gravity KW - gravitational lensing KW - no-horizon spacetimes UR - https://iopscience.iop.org/article/10.1088/1475-7516/2015/06/048 N2 - We study deflection of light rays and gravitational lensing in the regular Bardeen no-horizon spacetimes. Flatness of these spacetimes in the central region implies existence of interesting optical effects related to photons crossing the gravitational field of the no-horizon spacetimes with low impact parameters. These effects occur due to existence of a critical impact parameter giving maximal deflection of light rays in the Bardeen no-horizon spacetimes. We give the critical impact parameter in dependence on the specific charge of the spacetimes, and discuss "ghost" direct and indirect images of Keplerian discs, generated by photons with low impact parameters. The ghost direct images can occur only for large inclination angles of distant observers, while ghost indirect images can occur also for small inclination angles. We determine the range of the frequency shift of photons generating the ghost images and determine distribution of the frequency shift across these images. We compare ER -
SCHEE, Jan and Zdeněk STUCHLÍK. Gravitational lensing and ghost images in the regular Bardeen no-horizon spacetimes. \textit{Journal of Cosmology and Astroparticle Physics}. GB - Spojené království Velké Británie a, 2015, No~6, p.~''048-1''-''048-46'', 46 pp. ISSN~1475-7516. Available from: https://dx.doi.org/10.1088/1475-7516/2015/06/048.
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