Mr. Dale Weigt
University of Southampton, UK
Remote X-ray telescopic observations of Jupiter in concert with Juno data
Abstract : Juno’s arrival at Jupiter back in 2016 has a provided a unique opportunity to study the jovian X-rays like never before. Since their discovery by the Einstein Observatory 40 years ago, it is only now we can combine in situdata with remote X-ray campaigns such as Chandra and XMM-Newton. This allows us to frame the X-ray aurora in the context of the magnetospheric conditions observed by Juno. Chandra and XMM data provide both spatial and spectral X-ray analysis respectively of Jupiter. In this work, we focus on the timing and mapping capabilities of the Chandra X-ray telescope. We present both timing analysis and mapping results of one ~10-hour Chandra observation while Juno was near its apojove position. We find two quasi-periodic oscillations (QPOs) at the beginning and end of the observation window with periods of ~37 mins and ~26 mins respectively. The X-ray heat maps show that morphology of the hot spot was extended during these intervals. The magnetospheric origins of the QPOs were found to lie on possible open and closed field lines near the magnetosheath at noon-dusk. We also present some future avenues which can be explored from this dataset to continue to further our understanding about the mysterious X-ray aurora.
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Last Updated: 11th December 2019 by Simon Purser
2020-01-29, 15:30: Dr. D. Weigt (University of Southampton)
Mr. Dale Weigt
University of Southampton, UK
Remote X-ray telescopic observations of Jupiter in concert with Juno data
Abstract : Juno’s arrival at Jupiter back in 2016 has a provided a unique opportunity to study the jovian X-rays like never before. Since their discovery by the Einstein Observatory 40 years ago, it is only now we can combine in situdata with remote X-ray campaigns such as Chandra and XMM-Newton. This allows us to frame the X-ray aurora in the context of the magnetospheric conditions observed by Juno. Chandra and XMM data provide both spatial and spectral X-ray analysis respectively of Jupiter. In this work, we focus on the timing and mapping capabilities of the Chandra X-ray telescope. We present both timing analysis and mapping results of one ~10-hour Chandra observation while Juno was near its apojove position. We find two quasi-periodic oscillations (QPOs) at the beginning and end of the observation window with periods of ~37 mins and ~26 mins respectively. The X-ray heat maps show that morphology of the hot spot was extended during these intervals. The magnetospheric origins of the QPOs were found to lie on possible open and closed field lines near the magnetosheath at noon-dusk. We also present some future avenues which can be explored from this dataset to continue to further our understanding about the mysterious X-ray aurora.
Category: Future Seminars, Seminars
Big thank you to @MartinaPQuinn of @helloalicepr for moderating the discussion, and of course to our panel @NeasaMcG @CormacORafferty and @laoneill111
@CormacORafferty "to cut yourself off from fundamental research means you could miss out on some of the biggest ideas"
@laoneill "it's our job as researchers to keep reminding governments how important basic research is" "For Dev basic research being carried out in Ireland was a badge of pride"
@NeasaMcG Schrödinger's work in causality was not well received by the religious authorities at the time At the same time DIAS did have Catholic priests working on research projects in the early days, so there was not the conflict you might think between science and religion
@laoneill111 Schrödinger was very popular in social circles in Dublin, a bit of a renaissance man
@CormacORafferty Schrödinger was gifted at explaining difficult concepts
@CormacORafferty on how unsuccessful work, in Schrödinger's case, unified field theory, is just as important part of science. And no one has managed to crack it yet! And not forgetting the cat
@laoneill111 how Schrödinger's book inspired scientists to change fields and result in the finding of the double helix.
@NeasaMcG explaining how DIAS came about and how Schrödinger was attracted to Ireland #DIASdiscovers
Panel Discussion getting underway! @laoneill111 @CormacORafferty @NeasaMcG @MartinaPQuinn
We're half way through the documentary... Join us for the rest and the fascinating discussion to follow DM for link
@Stella15882 @NeasaMcG @HistFest @lukeoneil47 @CormacORafferty @MartinaPQuinn Stella, send me an email. I'll get a link to you communications@dias.ie
Starting in just over an hour we have limited tickets left for tonights broadcast and panel discussion. Get your free ticket now twitter.com/DIAS_Dublin/st…
Culture Night 2020 Booking Links! - Virtual Tour of DIAS Dunsink Observatory: eventbrite.ie/e/118043576515 - Earthquakes and other Geohazards: eventbrite.ie/e/earthquakes-… - Taifeadaí Cartlainne ó Scoil an Léinn Cheiltigh: eventbrite.ie/e/taifeadai-ca… Join us from 5pm! #CultureNight2020
@dias_geophysics have developed something special for @galway2020 in collaboration with composer David Stalling. It is an audio-visual composition “Palace of Ships,” based on sounds, images and seismic data from DIAS’ @SEA_SEIS Expeditions. More: dias.ie/2020/09/14/dia…
Meet some of our panelists for tomorrows discussion on the impact and legacy of the work carried out by Erwin Schroedinger during his time in Ireland as our first Director of Theoretical Physics Grab a free ticket here: eventbrite.ie/e/115984908985