The Libraries will be performing routine maintenance on UWSpace on October 20th, 2025, from 10:00-10:30 pm ET. UWSpace will be unavailable during this time. Service should resume by 10:30 pm ET.
 

Transition to light-like trajectories in thin shell dynamics

Loading...
Thumbnail Image

Date

2018-11

Authors

Mann, Robert B.
Nagle, Ian
Terno, Daniel R.

Advisor

Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier

Abstract

It was recently shown that a massive thin shell that is sandwiched between a flat interior and an exterior geometry given by the outgoing Vaidya metric becomes null in a finite proper time. We investigate this transition for a general spherically-symmetric metric outside the shell and find that it occurs generically. Once the shell is null its persistence on a null trajectory can be ensured by several mechanisms that we describe. Using the outgoing Vaidya metric as an example we show that if a dust shell acquires surface pressure on its transition to a null trajectory it can evade the Schwarzschild radius through its collapse. Alternatively, the pressureless collapse may continue if the exterior geometry acquires a more general form.

Description

Keywords

thin shell

LC Subject Headings

Citation