Multi-band Observations

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Presentation transcript:

Multi-band Observations Toney Minter (for Amy Lovell) Future GBT Instrumentation Workshop

Comets Simultaneous observations of parent and daughter species H20 → OH + H+ OH has complicated excitation & hard to model H20 sublimes from nucleus H20 photo-dissociates in ~82000∙AU2 seconds OH lasts ~150000 seconds NH3 Sublimes from nucleus Measures temperature of coma H20 photo-dissociation adds velocity kick to OH H20 & NH3 line widths → outflow velocities

Asteroids λ → depth probed Multi-band observations probe different depths Measure T vs. depth Constraints on composition, specific heat, density, etc.

Transients Rejection of RFI events Spectral Indices, etc. vs. time

VLBI Geodetic observations Removal of atmospheric phases Removal of ionospheric phases Transients, micro-quasars, etc.

Optics Frequency Selective Surface Dual Frequency Receiver