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SUMMARY:Lessons learned: What We Need to explain to the Community at Large
DTSTART;VALUE=DATE-TIME:20220909T093000Z
DTEND;VALUE=DATE-TIME:20220909T094500Z
DTSTAMP;VALUE=DATE-TIME:20240704T115923Z
UID:indico-contribution-128@meetings.aip.de
DESCRIPTION:Speakers: Scott Wolk (SAO)\nI will discuss the smallsat SEEJ (
 Structure & Evolution of ExoJupiter Atmospheres). It will measure both the
  fluxes of high-energy photons emanating from a flux limited sample of pla
 net-hosting stars and the absorption depth of X-rays in the atmospheres of
  hot Jupiter\, Saturn\, and Neptune analogs. SEEJ will measure how often h
 igh energy flares of a given size occur\, and establish\, for the first ti
 me\, the statistics of these crucial events on exoplanet hosts. Specifical
 ly\, the SEEJ investigation will determine the degree to which stellar hig
 h-energy photons inflate nearby exoplanet atmospheres and the physical cha
 racteristics of driven planetary winds. The investigation will determine t
 he bulk composition of the inflated atmosphere and will assess the presenc
 e of dense evaporation tails resulting from this interaction. The experime
 ntal objective is to measure the high energy fluence through stellar monit
 oring and understand the impact of the high energy fluence by measuring th
 e atmospheres using the X-ray transit technique.\n\nTo accomplish this goa
 l\, we need to be able to demonstrate to the astrophysical community at-la
 rge a clear  connection from the observations to reality. We need to expla
 in what the transit results from a limited set of planets imply for the at
 mospheric evolution of planets more broadly.  This path starts with the de
 tection of a transit followed by a fitted light curve and then inferences 
 about the obstructing material.  Finally\, we need to demonstrate the impl
 ications that the obscuring material has for the underlying atmosphere.  I
 n this discussion\, I highlight some of our communal shortcomings.  For ex
 ample\, while we have recently improved our simulations and the inference 
 they provide\,  the single existing positive detection of an X-ray transit
  (HD 189733b) makes it difficult to evaluate or quantify astrophysical and
  instrumental systematic issues that are associated with general transit s
 imulations. The utility of solar templates for the diverse and different s
 pot coverage of young stars and M dwarfs is undemonstrated.\n\nhttps://mee
 tings.aip.de/event/16/contributions/128/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/16/contributions/128/
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