STELLAR ENCOUNTER RATE IN GALACTIC GLOBULAR CLUSTERS
作者： Arash Bahramian , Craig O. Heinke , Gregory R. Sivakoff , Jeanette C. Gladstone
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 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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