CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Models for Self-Gravitating Photon Shells and Geons

Håkan Andréasson (Institutionen för matematiska vetenskaper, Analys och sannolikhetsteori) ; D. Fajman ; Maximilian Thaller (Institutionen för matematiska vetenskaper, Analys och sannolikhetsteori)
Annales de l'Institute Henri Poincare. Physique theorique (1424-0637). Vol. 18 (2017), 2, p. 681-705.
[Artikel, refereegranskad vetenskaplig]

We prove existence of spherically symmetric, static, self-gravitating photon shells as solutions to the massless Einstein-Vlasov system. The solutions are highly relativistic in the sense that the ratio 2m(r) / r is close to 8 / 9, where m(r) is the Hawking mass and r is the area radius. In 1955 Wheeler constructed, by numerical means, so-called idealized spherically symmetric geons, i.e., solutions of the Einstein-Maxwell equations for which the energy momentum tensor is spherically symmetric on a time average. The structure of these solutions is such that the electromagnetic field is confined to a thin shell for which the ratio 2m / r is close to 8 / 9, i.e., the solutions are highly relativistic photon shells. The solutions presented in this work provide an alternative model for photon shells or idealized spherically symmetric geons.



Denna post skapades 2017-02-17. Senast ändrad 2017-03-08.
CPL Pubid: 248204

 

Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för matematiska vetenskaper, Analys och sannolikhetsteoriInstitutionen för matematiska vetenskaper, Analys och sannolikhetsteori (GU)

Ämnesområden

Fysik

Chalmers infrastruktur