Observational constraints on supermassive dark stars

Zackrisson, Erik, Scott, Pat, Rydberg, Claes-Erik, Iocco, Fabio, Sivertsson, Sofia, Östlin, Göran, Mellema, Garrelt, Iliev, Ilian T and Shapiro, Paul R (2010) Observational constraints on supermassive dark stars. Monthly Notices of the Royal Astronomical Society: Letters, 410 (1). L57-L58. ISSN 1745-3933 [ONLINE]

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Some of the first stars could be cooler and more massive than standard stellar models would suggest, due to the effects of dark matter annihilation in their cores. It has recently been argued that such objects may attain masses in the 104¿107 M¿ range and that such supermassive dark stars should be within reach of the upcoming James Webb Space Telescope. Notwithstanding theoretical difficulties with this proposal, we argue here that some of these objects should also be readily detectable with both the Hubble Space Telescope and ground-based 8¿10 m class telescopes. Existing survey data already place strong constraints on 107 M¿ dark stars at z¿ 10. We show that such objects must be exceedingly rare or short lived to have avoided detection.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: EPrints Services
Date Deposited: 06 Feb 2012 19:15
Last Modified: 02 Jul 2019 18:22
URI: http://sro.sussex.ac.uk/id/eprint/19749

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