MG14 - Talk detail |
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Participant |
Luz, Paulo | |||||||
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Institution |
Instituto Superior Técnico, Universidade de Lisboa - Avenida Rovisco Pais 1 - Lisboa - Portugal - Portugal | |||||||
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Session |
AT3 |
Accepted |
Yes |
Order |
9 |
Time |
18:05 | 20' |
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Talk |
Oral abstract |
Title |
Spherical Newtonian Wormholes | |||||
| Coauthors | Lemos, José P. S. | |||||||
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Abstract |
A wormhole in Newtonian gravitation in curved space, enhanced with a connection between the mass density and the Ricci scalar, is presented. The wormhole, consisting of two connected asymptotically flat regions, inhabits a spherically symmetric curved space. The gravitational potential, gravitational field and the pressure that supports the fluid that permeates the Newtonian wormhole are computed. Particle dynamics and tidal effects in this geometry are studied. The possibility of having Newtonian black holes in this theory is analyzed. |
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Pdf file |
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Session |
BH4 |
Accepted |
Yes |
Order |
5 |
Time |
15:10 | 10' |
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Talk |
Oral abstract |
Title |
Static Electrically Charged Shells: Normal Shells and Tension Shells | |||||
| Coauthors | Lemos, José P. S. | |||||||
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Abstract |
The junction of an interior Minkowski with an exterior Reissner-Nordström spacetime is studied. Using the Israel junction formalism a perfect fluid static thin shell separating an interior Minkowski outside Reissner-Nordström spacetime is considered. Defining the Kruskal-Szekeres coordinates for the maximally extended Reissner-Nordström spacetime, the presence of a thin shell at any allowable sub-region is analyzed and the properties of the shell, the energy density and the pressure, are studied. The cases of pressure and tension static shells of matter appear naturally depending on the sub-region where the shell is considered. The energy conditions verified by a thin shell, for all the possible cases, are analyzed. |
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Pdf file |
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