Upcoming SwRI Boulder Colloquia

Colloquia are normally on Tuesdays at 11:00 am in the 4th-floor conference room, except as indicated below in bold text.
Show previous colloquia
Suggest a New Speaker

For questions or suggestions for speakers, please contact the SwRI colloquium organizers:
Raluca Rufu, 303-226-0879 or raluca(at)boulder.swri.edu
Julien Salmon, 720-208-7203 or julien(at)boulder.swri.edu
Kelsi Singer, 303-226-5910 or ksinger(at)boulder.swri.edu
Sierra Ferguson, sierra.ferguson(at)swri.org
Rogerio Deienno, rogerio.deienno(at)swri.org
Sam Van Kooten, 303-226-5909 or svankooten(at)boulder.swri.edu

To be added to the SwRI Boulder Colloquia email list, please contact Kelsi Singer, ksinger(at)boulder.swri.edu

Suggest a New Speaker HERE

Tue Oct 15, 2024
In Room 424 + Webex 11:00 am Harrison Agrusa Observatoire de la Côte d'Azur The curious case of Neptune’s Naiad

Abstract: Abstract: Discovered during Voyager 2’s flyby, Naiad is the innermost moon of Neptune, orbiting within the synchronous orbit at less than 2 Neptune radii. Naiad is in a peculiar 73:69 mean motion resonance with Thalassa, Neptune’s next innermost moon. In addition, Naiad’s bulk shape and size is constrained from resolved Voyager 2 images which allows for an estimate of its density. When combining all these measurements with results from numerical modeling, we reach some contradictory conclusions. For example, the Naiad-Thalassa resonance must be several Gyr old in order to explain Naiad’s present inclination. This is hard to reconcile with the fact that Naiad should be particularly sensitive to catastrophic disruption due to its proximity to the Roche limit. If Naiad has significant strength, then the issue of disruption could be avoided . However, this would then contradict the notion that Neptune’s inner satellites are reaccumulated fragments from Neptune’s original satellites that were destroyed during the capture of Triton. We discuss these contradictory ideas, some possible resolutions, and their implications for the Neptune system.

Tue Oct 22, 2024
In Room 424 + Webex 11:00 am Sarah Millholland MIT Tidal Sculpting of Short-Period Exoplanets

Tue Oct 29, 2024
In Room 424 + Webex 11:00 am Benjamin Idini UC Santa Cruz TBD

Tue Nov 5, 2024
In Room 424 11:00 am Thomas Gomez TBD

Tue Oct 15, 2024 In Room 424 + Webex	11:00 am	Harrison Agrusa	Observatoire de la Côte d'Azur	The curious case of Neptune’s Naiad
	Abstract:	Abstract: Discovered during Voyager 2’s flyby, Naiad is the innermost moon of Neptune, orbiting within the synchronous orbit at less than 2 Neptune radii. Naiad is in a peculiar 73:69 mean motion resonance with Thalassa, Neptune’s next innermost moon. In addition, Naiad’s bulk shape and size is constrained from resolved Voyager 2 images which allows for an estimate of its density. When combining all these measurements with results from numerical modeling, we reach some contradictory conclusions. For example, the Naiad-Thalassa resonance must be several Gyr old in order to explain Naiad’s present inclination. This is hard to reconcile with the fact that Naiad should be particularly sensitive to catastrophic disruption due to its proximity to the Roche limit. If Naiad has significant strength, then the issue of disruption could be avoided . However, this would then contradict the notion that Neptune’s inner satellites are reaccumulated fragments from Neptune’s original satellites that were destroyed during the capture of Triton. We discuss these contradictory ideas, some possible resolutions, and their implications for the Neptune system.
Tue Oct 22, 2024 In Room 424 + Webex	11:00 am	Sarah Millholland	MIT	Tidal Sculpting of Short-Period Exoplanets
Tue Oct 29, 2024 In Room 424 + Webex	11:00 am	Benjamin Idini	UC Santa Cruz	TBD
Tue Nov 5, 2024 In Room 424	11:00 am	Thomas Gomez		TBD