Ray-Tracing through the Millennium Simulation

Details Ray-Tracing through the Millennium Simulation Ray-Tracing through the Millennium Simulation

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21111203h&link_type=abstract

American Astronomical Society, AAS Meeting #211, #112.03; Bulletin of the American Astronomical Society, Vol. 39, p.941

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We investigate gravitational lensing by carrying out ray-tracing through the Millennium Simulation, one of the largest simulations of cosmic structure formation. Results for strong lensing probabilities as well as the mass and redshift distribution of strong lenses are presented. The effects of additional material in front or behind the lenses and the influence of the stellar mass in galaxies are discussed. Furthermore, the potential capabilities of future radio telescopes for imaging the cosmic matter distribution are considered. By observing lensing of 21-cm emission during reionization with telescopes like the planned Square Kilometer Array (SKA), mass imaging may be possible with much higher signal-to-noise than could be obtained by using galaxy lensing.

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