2019 HotSci at STScI
Space Telescope Science Institute (STScI)
3700 San Martin Drive
Baltimore, MD 21218
2:45 PM - 4:00 PM
Featuring Bonnie Meinke on Identifying collisions in Saturn’s Rings by observing the sub-cm particle distribution and Susana Deustua on HST as a particle detector.
All talks are held on Wednesdays in the STScI John N. Bahcall Auditorium at 3:00 p.m. preceded by refreshments at 2:45 p.m.
Name: Bonnie Meinke
Title: Identifying collisions in Saturn’s Rings by observing the sub-cm particle distribution
Abstract: I present the analysis of solar occultation data from Cassini's Ultraviolet Imaging Spectrograph (UVIS) in order to measure the particle size distribution in Saturn’s F ring. My team has analyzed 16 solar occultations in UVIS EUV data, with emphasis on features produced by diffraction by micron-sized particles in Saturn’s F ring and the light diffracted by the particles in the ring during the occultation to determine the size distribution of sub-centimeter ring particles. The detections of small particles in the UVIS data are indicative of ongoing collisions in the F ring. I will discuss the correlation of small particle detections with known and imaged collisional events in the F ring.
Name: Susana Deustua
Title: HST as a particle detector