OSCULATING VERSUS INTERSECTING CIRCLES IN SPACE-BASED MICROLENS PARALLAX DEGENERACIES

• Published in: Journal of the Korean astronomical society Vol. 52; no. 4; pp. 121 - 131
• Main Author: Gould, Andrew
• Format: Journal Article
• Language: Korean
• Published: 2019
• Subjects: gravitational microlensing

I investigate the origin of arc degeneracies in satellite microlens parallax ${\pi}_E$ measurements with only late time data, e.g., t > $t_0+t_E$ as seen from the satellite. I show that these are due to partial overlap of a series of osculating, exactly circular, degeneracies in the ${\pi}_E$ pla...