Summer Seminar: Anna Nierenberg and Jordan Hanson

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August 9, 2016
11:30AM - 12:30PM
Location
4138 PRB

Date Range
Add to Calendar 2016-08-09 11:30:00 2016-08-09 12:30:00 Summer Seminar: Anna Nierenberg and Jordan Hanson "Strong narrow-line lensing and the subhalo mass function"Anna Nierenberg (Physics)The quasar narrow-line region provides an attractive background source for gravitational lensing studies of dark matter substructure, because it is smooth, large enough to be free from microlensing contamination, and significant narrow-line flux is detectable in virtually all quasars, making it possible to more than double the previous sample of strong lenses which could be used for this purpose. I will present an initial analysis of data from a dedicated HST grism survey in which we measure narrow-line fluxes from multiply imaged background quasars and place constraints on the presence of substructure in these systems. "Experimental Particle Astrophysics in Antarctica"Jordan Hanson (Physics)In conjunction with the New Vistas in Astronomy Outreach Program with the Perkins Observatory and the Columbus Astronomical Society, I will present a review of the field of experimental particle astrophysics in Antarctica. The photo and radio Cherenkov-based experimental results will be discussed, as well as the future of the field. The way forward for detection of neutrinos with world-record setting energies lies with the radio Cherenkov based projects. 4138 PRB Center for Cosmology and AstroParticle Physics (CCAPP) ccapp@osu.edu America/New_York public
Description

"Strong narrow-line lensing and the subhalo mass function"

Anna Nierenberg (Physics)

The quasar narrow-line region provides an attractive background source for gravitational lensing studies of dark matter substructure, because it is smooth, large enough to be free from microlensing contamination, and significant narrow-line flux is detectable in virtually all quasars, making it possible to more than double the previous sample of strong lenses which could be used for this purpose. I will present an initial analysis of data from a dedicated HST grism survey in which we measure narrow-line fluxes from multiply imaged background quasars and place constraints on the presence of substructure in these systems.

 

"Experimental Particle Astrophysics in Antarctica"

Jordan Hanson (Physics)

In conjunction with the New Vistas in Astronomy Outreach Program with the Perkins Observatory and the Columbus Astronomical Society, I will present a review of the field of experimental particle astrophysics in Antarctica. The photo and radio Cherenkov-based experimental results will be discussed, as well as the future of the field. The way forward for detection of neutrinos with world-record setting energies lies with the radio Cherenkov based projects.

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