Effects of cosmic string velocities and the origin of globular clusters

Journal Article · Tue Dec 01 04:00:00 EST 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/12/004· OSTI ID:22525154

Lin, Ling; Yamanouchi, Shoma; Brandenberger, Robert ^[1]

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1. Department of Physics, McGill University, Montréal, QC, H3A 2TS (Canada)

With the hypothesis that cosmic string loops act as seeds for globular clusters in mind, we study the role that velocities of these strings will play in determining the mass distribution of globular clusters. Loops with high enough velocities will not form compact and roughly spherical objects and can hence not be the seeds for globular clusters. We compute the expected number density and mass function of globular clusters as a function of both the string tension and the peak loop velocity, and compare the results with the observational data on the mass distribution of globular clusters in our Milky Way. We determine the critical peak string loop velocity above which the agreement between the string loop model for the origin of globular clusters (neglecting loop velocities) and observational data is lost.

• OSTI ID: 22525154
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 12 Vol. 2015; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
COMPARATIVE EVALUATIONS
DENSITY
HYPOTHESIS
MASS
MASS DISTRIBUTION
MILKY WAY
SPHERICAL CONFIGURATION
STAR CLUSTERS
STRING THEORY
VELOCITY