|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Lensed Dusty Star-Forming Galaxies and Dark Matter Substructure
If you have a question about this talk, please contact Sergey Koposov.
Recently, wide-area mm/submm-wave surveys have discovered a large, new population of strongly lensed dusty, star-forming sources at high redshift (z~2-6). I will present ALMA resolved imaging of a sample of lensed sources discovered by the South Pole Telescope, in addition to the current state of lens models, which are allowing us to learn important properties about the sources. I will show that generalizing this lens modeling technique to fit the velocity components of molecular lines separately, effectively creating a 3D lens model of spatially resolved spectroscopic data, will drastically increase the sensitivity to the lensing signal of dark matter substructure in the lens halos. Using this method, I predict that there is >55% probability of detecting a substructure in a lens with a one-hour observation with ALMA if the mass fraction of substructure is f=1%. Given >100 lensing systems, this sample will be a promising place to look for dark matter substructure, and to measure the subhalo mass function with a high statistical significance.
This talk is part of the Institute of Astronomy Galaxies Discussion Group series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsInspirational Women in Engineering Talk Series The Rede Lecture 2012 Engineers Without Borders Panel Talks
Other talks(Pervasive and Mobile Computing Systems) Precise Title TBC Easter Term Poster Session Primordial Planetesimals of the Solar System Research Data Management: Workshop (For GSLS PhD students) The materials for trust-building in expertise Behaviour and Health Research Unit (BHRU) Annual Lecture - Tackling Childhood Obesity: Are we doing enough?