Fresnel Targets in UV space mission Light Scattering from Dust Disks in active circumstellar,...
-
Upload
adrianna-birch -
Category
Documents
-
view
222 -
download
1
Transcript of Fresnel Targets in UV space mission Light Scattering from Dust Disks in active circumstellar,...
Fresnel Targets in UV space mission
Light Scattering from Dust Disks in active circumstellar, interstellar,
galactic
Summary
• Fresnel Configurations• UV Observation Targets• Light Scattering• Numerical Profile Simulations• Simulation of Fresnel Imagery in a UV space
Mission
UV Observation
• Why scattering light objects– Young stars have dust disks rotating around,
mixed with gas.– Scattered light from dust ( gas does not scatter
light)– Planets and young brown dwarfs can be detected
with these formation.– Interesting?
UV Observation Targets
• High Energy Source• Stars, Active Galaxy etc
• High Energy Particles• UV radiation Source or Scattered light source
• Deep Space Targets• Galactic objects
• Distant Objects : 10-150 pc
UV Observation
• UV Observation for Fresnel Imaging– High Energy Sources
• UV Wavelength : 100 -300 nm( 100,130,190)• High Angular Resolution Image in UV
detection• Long focal distance
Scattering of light principle
• Scattered Light– Scattering function• Henyey- Greenstein scattering function
Simulation Configurations
• Energy: Solar Energy• Distance: 150• Disks Ratio: Thin Disk model
– Rin = 15 AU. – Rout = 200AU– Disk Ratio : Think disk Type
• Fresnel Configuration• Array size : 20 m
– Wavelengths: independent [125-350 nm, 1250°-3500°]– Resolution 0.7 mas