Celestial Mechanics News & Events

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Scientists discuss black holes in Aveiro

The X Black Holes workshop took place at Aveiro University on 18-19 December 2017. It gathered almost 100 scientists discussing black holes from many different perspectives. Besides 63 oral communications, the workshop also included the fourth General Assembley of the Portuguese Relativity and Gravitation Society (SPRG) and a special session celebrating the 60th anniversary of Prof. J. S. Lemos.

Chaotic N-body Dynamics

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Speaker
Tjarda Boekholt (Aveiro U.)
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GAP room
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Abstract: As a new post-doc of the Physics department, I would like to take this opportunity to introduce myself scientifically. I will discuss my work on "applied dynamics", in which I use the AMUSE framework to model dense stellar systems.

From Planet-X to Planet Nine

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Speaker
Nuno Peixinho (Coimbra U.)
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GAP room
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Abstract: At the end of the 19th century the existence os a planet beyond Neptune was in debate. In 1930, Pluto was discovered, but too far from the prediction. In 1992 we found out that Pluto is actually a member of a huge belt of icy bodies orbiting beyond Neptune.

From Infinitely Large to Infinitely Small

Gr@v member António P. Morais gave a talk at Escola Secundária José Régio in Vila do Conde with title "Do Infinitamente Grande ao Infinitamente Pequeno - uma jornada pelas interações fundamentais na natureza". António was an invited speaker to participate in a sequence of seminars entitled "A Biblioteca convida...", and presented to 11th and 12th grade Science and Technology students the four fundamental interactions in nature and how have they shaped our Universe.

Dynamics of an isolated viscoelastic body

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Speaker
Lucas Ruiz dos Santos (Universidade Federal de Itajubá)
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GAP room
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Abstract: In this talk, we will discuss a simplified method to formulate the problem of a self-gravitating viscoelastic body: the Pseudo-rigid body method. We will see comparisons of this approach with others commonly presented in some papers and what is the qualitative and quantitative information that this model can provide. We will also remark that there is no need to restrict the problem to the planar case and how it can be easily generalized to the two-body problem.

Models for Use in Celestial Mechanics

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Speaker
Clodoaldo Ragazzo (São Paulo U.)
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GAP room
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Abstract: In this talk I will present equations  for the motion of linear viscoelastic bodies interacting under gravity. The equations are fully three dimensional and allow for the integration of the spin, the orbit, and the deformation of each body.