Using Cosmic Rays Detected by HST as Geophysical Markers. I. Detection and Characterization of Cosmic Rays
نویسندگان
چکیده
The Hubble Space Telescope (HST) has been operational for over 30 years and throughout that time it bombarded by high energy charged particles colloquially referred to as cosmic rays. In this paper, we present a comprehensive study of more than 1.2 billion rays observed with HST using custom written python package, \texttt{HSTcosmicrays}, is available the astronomical community. We analyzed $75,908$ dark calibration files taken part routine programs five different CCD imagers coverage Solar Cycle 23 24. observe expected modulation galactic solar activity. model energy-loss distributions derive an estimate 534 $\pm$ 117 MeV kinetic typical ray impacting HST. For three largest non-uniformity in thickness, independently confirm overall structure produced fringing analyses analyzing strikes across detector field view. analyze STIS/CCD observations crosses South Atlantic Anomaly find peak cosmic-ray particle flux $\sim1100$ $particle/s/cm^2$. strong evidence two spatially confined regions North America Australia exhibit increased fluxes at $5\sigma$ level.
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2021
ISSN: ['2041-8213', '2041-8205']
DOI: https://doi.org/10.3847/1538-4357/abfa9b