The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Does the Fornax dwarf spheroidal have a central cusp or core?
Open accessAbstract
The dark matter dominated Fornax dwarf spheroidal has five globular clusters orbiting at ∼1 kpc from its centre. In a cuspy cold dark matter halo the globulars would sink to the centre from their current positions within a few Gyr, presenting a puzzle as to why they survive undigested at the present epoch. We show that a solution to this timing problem is to adopt a cored dark matter halo. We use numerical simulations and analytic calculations to show that, under these conditions, the sinking time becomes many Hubble times; the globulars effectively stall at the dark matter core radius. We conclude that the Fornax dwarf spheroidal has a shallow inner density profile with a core radius constrained by the observed positions of its globular clusters. If the phase space density of the core is primordial then it implies a warm dark matter particle and gives an upper limit to its mass of ∼0.5 keV, consistent with that required to significantly alleviate the substructure problem.
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Citations
Cites
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Self-citation
Cited by
Dark matter self-interactions and small scale structure
Tulin, S., & Yu, H.-B. (2018) · Physics Reports · doi:10.1016/j.physrep.2017.11.004 · Cited by 1,111
Governato, F., Zolotov, A., Pontzen, A., Christensen, C., Oh, S. H., Brooks, A. M., Quinn, T., Shen, S., & Wadsley, J. (2012) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2012.20696.x · Cited by 640
Beyond collisionless dark matter: Particle physics dynamics for dark matter halo structure
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Read, J. I. (2014) · Journal of Physics G: Nuclear and Particle Physics · doi:10.1088/0954-3899/41/6/063101 · Cited by 489
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Metadata
- Authors
- Goerdt, T., Moore, B., Read, J. I., Stadel, J., & Zemp, M.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2006-04-13
- Volume
- 368
- Issue
- 3
- Pages
- 1073-1077
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2014602460
- Cited by
- 273
- References
- 27
- FWCI
- 14.27
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Goerdt, T., Moore, B., Read, J. I., Stadel, J., & Zemp, M. (2006). Does the Fornax dwarf spheroidal have a central cusp or core? Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1111/j.1365-2966.2006.10182.x
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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