THIS PROPOSAL AIMS TO SALVAGE THE IMMENSE POTENTIAL OF THIS SCIENCE BY RUNNING IDEALIZED SIMULATIONS OF DARK MATTER SUBHALOS IN A FIXED EXTERNAL POTENTIAL (THE HOST HALO) AT EXQUISITE RESOLUTION. THE PI WILL CONSTRUCT A DATA-BASE OF SIMULATIONS COVERING A VAST PARAMETER SPACE OF ORBITS AND HALO PROPERTIES AND CAREFULLY CHECK THAT EACH INDIVIDUAL SIMULATION IS PROPERLY CONVERGED WHICH REQUIRES AS MANY AS 10^6 PARTICLES PER SIMULATION! THE PI WILL ALSO CHARACTERIZE UNDER WHAT CONDITIONS SUBHALOS UNDERGO ARTIFICIAL DISRUPTION IN N-BODY SIMULATIONS AND USE THE DATA-BASE TO CALIBRATE A NEW SEMI-ANALYTICAL MODEL DESCRIBING THE BUILD-UP AND EVOLUTION OF DARK MATTER SUBSTRUCTURE.

$256,435FY2020National Aeronautics and Space AdministrationNASA

Yale Univ

Investigators

View source on USAspending →

THIS PROPOSAL AIMS TO SALVAGE THE IMMENSE POTENTIAL OF THIS SCIENCE BY RUNNING IDEALIZED SIMULATIONS OF DARK MATTER SUBHALOS IN A FIXED EXTERNAL POTENTIAL (THE HOST HALO) AT EXQUISITE RESOLUTION. THE PI WILL CONSTRUCT A DATA-BASE OF SIMULATIONS COVERING A VAST PARAMETER SPACE OF ORBITS AND HALO PROPERTIES AND CAREFULLY CHECK THAT EACH INDIVIDUAL SIMULATION IS PROPERLY CONVERGED WHICH REQUIRES AS MANY AS 10^6 PARTICLES PER SIMULATION! THE PI WILL ALSO CHARACTERIZE UNDER WHAT CONDITIONS SUBHALOS UNDERGO ARTIFICIAL DISRUPTION IN N-BODY SIMULATIONS AND USE THE DATA-BASE TO CALIBRATE A NEW SEMI-ANALYTICAL MODEL DESCRIBING THE BUILD-UP AND EVOLUTION OF DARK MATTER SUBSTRUCTURE. · GrantIndex