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Size–frequency distributions of fragments from SPH/N-body simulations of asteroid impacts: Comparison with observed asteroid families
Asteroids Collisional physics Impact processes
2015/12/25
We investigate the morphology of size–frequency distributions (SFDs) resulting from impacts into 100-km-diameter parent asteroids, represented by a suite of 161 SPH/N-body simulations conducted to stu...
The formation of asteroid satellites in large impacts:results from numerical simulations
Asteroids Collisional physics Impact processes Satellites general
2015/12/25
We present results of 161 numerical simulations of impacts into 100-km diameter asteroids, examining debris trajectories to search for the formation of bound satellite systems. Our simulations utilize...
Glycine oligomerization up to triglycine by shock experiments simulating comet impacts
comet impacts amino acids peptides shock experiments origins of life
2017/4/10
We conducted shock experiments simulating comet impacts to assess the feasibility of peptide synthesis by such a
process. We used frozen mixture of the amino acid glycine, water ice, and silicate (fo...
Impacts of Dark Stars on Reionization and Signatures in the Cosmic Microwave Background
Impacts Dark Stars Reionization Signatures Cosmic
2011/9/30
We perform a detailed and systematic investigation of the possible impacts of dark stars upon the reionization history of the Universe, and its signatures in the cosmic microwave background (CMB). We ...
Towards Precision LSST Weak-Lensing Measurement - I: Impacts of Atmospheric Turbulence and Optical Aberration
Astronomical Instrumentation gravitational lensing dark matter cosmology
2010/11/12
The weak-lensing science of the Large Synoptic Survey Telescope (LSST)project drives the need to carefully model and separate the instrumental arti-facts from the intrinsic shear signal caused by grav...
NASA's LCROSS Impacts Confirm Water in Lunar Crater
NASA's LCROSS Confirm Water Lunar Crater
2009/11/19
Preliminary data from NASA's Lunar Crater Observation and Sensing Satellite, or LCROSS, indicates the mission successfully uncovered water in a permanently shadowed lunar crater. The discovery opens a...