MG14 - Talk detail |
Participant |
Matos, Tonatiuh | |||||||
Institution |
Departamento de Física, Centro de Investigación y de Estudios Avanzados del IPN - Av. Politecnico 2508, Sn. Pedro Zacatenco - Mexico-city - Gustavo A. Madero, DF - Mexico | |||||||
Session |
BS2 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Scalar Fields as Dark Matter | |||||
Coauthors | ||||||||
Abstract |
The Scalar Fields as Dark Matter behaves exactly in the same way as Cold Dark Matter at cosmological scales. Nevertheless, at galactic scales this model predicts flat central density dark matter profiles and less formation of substructure, as observed. In this talk we review this properties, deduce some of them in a very simple way and show numerical simulations of galaxies, where the gas form spiral arms and bars as the real galaxies. We conclude that this model fits well the observations at all scales in a simpler way as the cold dark matter paradigm does. |
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Pdf file |
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Session |
AT3 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Novel Cosmic Censorship from the Kerr-like Wormhole | |||||
Coauthors | ||||||||
Abstract |
We analyze the geodesic motion around the Kerr-like wormhole (Gen. Rel. Grav. 45,(2014),1613) and show that there is no geodesics touching the ring singularity of the wormhole in any way. This wormhole contains a ring singularity only on the south hemisphere, without horizon, but as in the Kerr solution, there is no manner to see the singularity. Thus, this is a new kind of cosmic censorship. |
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Pdf file |
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