A Closer Look at Microlensing

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Presentation transcript:

A Closer Look at Microlensing C249: Planetary Astrophysics September 6, 2017

What does a microlensing event look like? Gaudi 2012

What are caustics? s = instantaneous projected separation of star & planet (in Einstein radii) Gaudi 2012

What are caustics? Representative source size Star Planet s = instantaneous projected separation of star & planet (in Einstein radii) Gaudi 2012

What are caustics? Planetary caustic Representative source size Central caustic Star Planet s = instantaneous projected separation of star & planet (in Einstein radii) Gaudi 2012

How would the light curves appear? Gaudi 2012

Sample Event: Star without Planet Animation by Scott Gaudi

Sample Event: Star with Planet Perturbation of Major Image Animation by Scott Gaudi

Sample Event: Star with Planet Perturbation of Minor Image Animation by Scott Gaudi

What is the planet discovery space for microlensing? Gaudi 2012

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