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Observational constraints on supermassive dark stars
Stockholm University, Faculty of Science, Department of Astronomy. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Astronomy. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
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2010 (English)In: Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, Vol. 407, no 1, L74-L78 p.Article in journal (Refereed) Published
Abstract [en]

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 104-107Msolar 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 107Msolar dark stars at z ~ 10. We show that such objects must be exceedingly rare or short lived to have avoided detection.

Place, publisher, year, edition, pages
2010. Vol. 407, no 1, L74-L78 p.
Keyword [en]
stars: Population III, dark ages, reionization, first stars, dark matter
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Astronomy
Identifiers
URN: urn:nbn:se:su:diva-53883DOI: 10.1111/j.1745-3933.2010.00908.xISI: 000289806400013OAI: oai:DiVA.org:su-53883DiVA: diva2:391549
Available from: 2011-01-25 Created: 2011-01-25 Last updated: 2014-12-09Bibliographically approved

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Zackrisson, ErikScott, PatRydberg, Claes-ErikÖstlin, GöranMellema, Garrelt
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Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)Department of Physics
Astronomy, Astrophysics and Cosmology

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