BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Noise from Above: Determining the Impact of Starlink's Unintended 
 Electromagnetic Radiation on REACH - Gabriella Rajpoot / Cavendish Laborat
 ory
DTSTART:20250514T121500Z
DTEND:20250514T124000Z
UID:TALK232036@talks.cam.ac.uk
CONTACT:128254
DESCRIPTION:21-cm cosmology experiments have opened new frontiers in our q
 uest to explore the early universe. However\, the rapid expansion of satel
 lite constellations in Low Earth Orbit (LEO) poses a significant threat. S
 paceX’s Starlink is particularly concerning due to unintended electromag
 netic radiation (UEMR) generated by its hardware and onboard electronic su
 bsystems\, as reported by observatories such as the Low-Frequency Array (L
 OFAR). These emissions could contaminate observations of the faint 21-cm s
 ignal\, already buried beneath foreground emissions and radio frequency in
 terference (RFI). The Radio Experiment for the Analysis of Cosmic Hydrogen
  (REACH) is a low-frequency radio telescope based in the Karoo radio rese
 rve\, South Africa\, designed to detect the global 21-cm signal from Cosmi
 c Dawn. In this talk\, I will present my ongoing work assessing the extent
  to which Starlink impacts REACH. My approach combines orbital trajectory 
 simulations using Two-Line Element (TLE) catalogues with geometric constra
 ints to identify Starlink flyovers within REACH’s field of view. These a
 re cross-referenced with power spectral density (PSD) measurements to sear
 ch for correlations indicating UEMR\, including Doppler shift analysis. I 
 conclude by outlining plans to automate this process and how this work con
 tributes to broader efforts to safeguard radio astronomy from satellite in
 terference.
LOCATION:The Hoyle Lecture Theatre + Zoom 
END:VEVENT
END:VCALENDAR