Events List

DateEvent TypeSpeaker
09/04/2018Astro SeminarSmadar Naoz [ -- ]

Title: Triples are Here and There, Triples are Everywhere (Triples in Planets, Stars, and Black holes)
Description: Abstract: Many observed triple systems in our Universe are in a hierarchical configuration: two objects orbit each other in a relatively tight inner binary while the third object is on a much wider orbit. In this case, the secular approximation (i.e., phase-averaged, long-term evolution) can be applied, where the interactions between two non-resonant orbits are equivalent to treating the two orbits as massive wires. Thus, the orbits may change shape and orientation, on timescales longer than the orbital periods, but the semi-major axes are constant. This approximation has been proven to be very useful in many astrophysical contexts, from planetary to triple-star systems and even black holes. I will discuss recent developments in that field and will show that hierarchical triple systems are richer and far more exciting than considered of before. In particular, the tight orbit can reach extremely high eccentricities and undergo chaotic flips of its orientation. This behavior has important implications for the evolution of many systems, and I will present some seminal examples, such as retrograde hot Jupiters, blue stragglers, and black-hole binaries. (2:00 PM - 3:15 PM, 726 Broadway, 940, CCPP Seminar, entered by manager on 07/02/2018, updated by dingml on 09/13/2018)
09/05/2018Astro PhAstro Ph [ + ]
09/07/2018Informal HEP TalkMohammad Hossein Namjoo [ + ]
09/07/2018Astro PhAstro Ph [ + ]
09/11/2018Astro SeminarDaniel Perley [ + ]
09/12/2018HEP SeminarYu-tin Huang [ + ]
09/12/2018Informal Astro TalkJoe DeRose [ + ]
09/12/2018Astro PhAstro Ph [ + ]
09/14/2018Astro PhAstro Ph [ + ]
09/17/2018CCPP Brown BagMatt Kleban [ + ]
09/17/2018Blanton Tinker Pullen Blanton Tinker Pullen [ + ]
09/18/2018Modjaz Group MtgModjaz Group Mtg [ + ]
09/18/2018Astro SeminarNeelima Sehgal [ + ]
09/18/2018HEP SeminarMonica Jinwoo Kang [ + ]
09/19/2018Astroparticle Group MeetAstro Particle Group Mtg [ + ]
09/19/2018HEP SeminarMichael Geller [ + ]
09/19/2018Astro PhAstro Ph [ + ]
09/20/2018Physics Dept ColloquiumMassimo Stiavelli [ + ]
09/21/2018Astro PhAstro Ph [ + ]
09/21/2018ISCISC [ + ]
09/24/2018CCPP Brown BagSiavash Golkar [ + ]
09/24/2018Blanton Tinker Pullen Blanton Tinker Pullen [ + ]
09/25/2018Modjaz Group MtgModjaz Group Mtg [ + ]
09/25/2018Astro SeminarSavvas Koushiappas [ + ]
09/26/2018Astroparticle Group MeetAstro Particle Group Mtg [ + ]
09/26/2018HEP SeminarJia Liu [ + ]
09/26/2018Astro PhAstro Ph [ + ]
09/27/2018Physics Dept ColloquiumAlex Kusenko [ + ]
09/28/2018Other [ + ]
09/28/2018ISCISC [ + ]