CCAPP Seminar: "Weak Lensing with Current and Future Surveys"

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April 2, 2019
11:30AM - 12:30PM
Location
PRB 4138

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Add to Calendar 2019-04-02 11:30:00 2019-04-02 12:30:00 CCAPP Seminar: "Weak Lensing with Current and Future Surveys" Melanie Simet (UC Riverside) Weak lensing is one of the cosmological probes considered to have the most power for upcoming large-scale photometric surveys.  However, there are a number of systematic effects that must be considered when making these measurements.  I will discuss some recent work in measuring galaxy cluster masses via weak lensing signals, an important measurement to facilitate the use of galaxy cluster abundances as a cosmological probe.  I will also discuss efforts to understand galaxy blends, a systematic effect where some detections assumed to be single objects for lensing measurements are actually superpositions of galaxies at two different redshifts. PRB 4138 Center for Cosmology and AstroParticle Physics (CCAPP) ccapp@osu.edu America/New_York public
Description

Melanie Simet (UC Riverside)

Weak lensing is one of the cosmological probes considered to have the most power for upcoming large-scale photometric surveys.  However, there are a number of systematic effects that must be considered when making these measurements.  I will discuss some recent work in measuring galaxy cluster masses via weak lensing signals, an important measurement to facilitate the use of galaxy cluster abundances as a cosmological probe.  I will also discuss efforts to understand galaxy blends, a systematic effect where some detections assumed to be single objects for lensing measurements are actually superpositions of galaxies at two different redshifts.

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