19 citations · 31 across the 9 of their papers we have counts for
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Earth-Projected Clustering of Historical Optical Transients in the Palomar Observatory Sky Survey-I (POSS-I)
Stephen Bruehl, Beatriz Villarroel, Hichem Guergouri +2
Palomar Observatory Sky Survey-I (POSS-I) images obtained before the launch of Sputnik contain star-like point sources consistent with sub-second flashes that are absent from all s…
Modelling Palomar Transients: Constraints from Reflection Geometry and Orbital Altitude
Beatriz Villarroel, Alina Streblyanska, Hichem Guergouri +3
Recent searches of digitised photographic plates from the Palomar Observatory have uncovered tens of thousands of short-lived transients, each visible in only a single exposure. Th…
Is there a background population of high-albedo objects in geosynchronous orbits around Earth?
Beatriz Villarroel, Enrique Solano, Hichem Guergouri +11
Old, digitized astronomical images taken before the human spacefaring age offer a unique view of the sky devoid of known artificial satellites. In this paper, we have carried out t…