#  ITC Seminar - David Hernandez (CfA) 

 



####  calendar\_today Date and Time 

 **February 10, 2020** 

 12:00PM - 01:00PM EST 

####  pin\_drop Location 

 **Phillips**  



 

 



 

 Are long-term N-body simulations reliable?

 Abstract: Astrophysicists rely on solution for the N-body problem for a myriad of dynamics problems, from those in dark matter dynamics to those in planetary dynamics. Over 50 years ago, Miller found that errors in our simulations of the N-body problem grow exponentially in time. So why should one trust any such simulation over long times? In this talk, I explore a three-body planetary system. The motion over long times can be compared to recent results from Hadden & Lithwich (2018). I find conventional integration methods are as accurate as more sophisticated symplectic methods. In fact, a higher order symplectic method gave unreliable statistics in one test.



 

 



 

 See also:- [ 2019 - 20 ](/academic-year/2019-20)
- [ Seminars ](/event-type/seminars)
 
 

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