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BEGIN:VEVENT
DTSTAMP:20261027T210223Z
DTSTART;VALUE=DATE-TIME:20261026T140000
DTEND;VALUE=DATE-TIME:20261026T150000
SUMMARY:Bengt Elliasson (Strathclyde): Modelling of plasma waves in the i
 onosphere for the detection of space debris
TZID:Europe/London
UID:20261026-8ac672c5a15746b001a1683b53666c18@warwick.ac.uk
CREATED:20261023T100800Z
DESCRIPTION:Space debris is a present and growing hazard for satellite co
 mmunication and space exploration. There are efforts to find new ways of
  detecting space debris to avoid collisions with spacecraft at different
  altitudes\, to complement traditional methods such radars optical teles
 copes. In this talk we will present research on the detection of space d
 ebris and satellites in the ionosphere by studying different kinds of pl
 asma waves (whistlers\, lower hybrid and magnetosonic waves) that are em
 itted when the satellite propagates through the ionosphere and interacts
  with plasma irregularities. The Canadian Cassiope/e-POP satellite\, ope
 rated by University of Calgary\, sometimes observes enhanced wave activi
 ty in the 1-10 kHz range during conjunctions with another satellites or 
 space debris\, in the low earth orbit (LEO) 350-1000 km. There are also 
 natural whistler wave emissions due to lightning strikes and man-made tr
 ansmissions by VLF stations for submarine communication\, which are easy
  to identify. We will show modelling results\, including space craft cha
 rging\, and simulations of wave excitation by the charged satellite as i
 t propagates through space\, and how these waves can be detected and int
 erpreted based on their frequency and polarization.
LOCATION:A1.25 (Millburn)
URL:
ATTACH:
CATEGORIES:CFSA Seminar
LAST-MODIFIED:20261023T100800Z
ORGANIZER;CN=Dmitrii Kolotkov:
END:VEVENT
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