[2014-11-10]Direct N-Body Simulations----中国科学院云南天文台

　　[Seminar]

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    Title: Direct N-Body Simulations

    Speaker: Prof. Sverre Aarseth

    Affiliation: Cambridge

　　Time: November 10, 2014 (Monday) 09:30-10:30am

　　Venue: Meeting Room 401 (Main Building)

　　Abstract:

        The study of stellar systems by numerical means has opened up many interesting avenues of research which are driven by the

    rapid hardware development. For an astronomer, the challenge is to simulate the evolution of realistic star clusters over

    significant times. Thus with a single PC and GPU card even small globular clusters are within reach of study. In this direct

    approach, all the interactions are calculated consistently and close encounters are treated by special techniques. At the same

    time, we employ synthetic stellar evolution based on model fits which describe the properties of the stars from the pre-mainsequence

    to supernova and black hole stage. This stellar laboratory provides a rich field for analysis and comparison with observations.

    On the dynamical side, there are also many opportunities for confronting theory. To illustrate the versatility of numerical simulations,

    we discuss recent results of tidal disruptions by stellar-mass black holes which require high accuracy.

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大样本恒星演化组

　　中国科学院天体结构与演化重点实验室

　　云南天文台学术委员会

　　 2014-11-06