Stellar Encounter Rate in Galactic Globular Clusters
作者： Gregory R. Sivakoff , Jeanette C. Gladstone , Arash Bahramian , Craig O. Heinke
DOI: 10.1088/0004-637X/766/2/136
关键词:
摘要: The high stellar densities in the cores of globular clusters cause significant interactions. These interactions can produce close binary mass-transferring systems involving compact objects and their progeny, such as X-ray binaries radio millisecond pulsars. Comparing numbers these interaction rates different drives our understanding how cluster parameters affect production binaries. In this paper we estimate encounter (Gamma) for 124 Galactic based on observational data opposed to methods previously employed, which assumed "King-model" profiles all clusters. By deprojecting surface brightness luminosity density profiles, treat "core-collapsed" same way. addition, use Monte-Carlo simulations investigate effects uncertainties various (distance, reddening, brightness) Gamma, producing first catalog GC with estimated errors. results published observations likely products (numbers binaries, pulsars, gamma-ray luminosity) find both clear correlations some differences results.
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