HST Echo Mapping of NGC 5548
SPIRAL DISK SIMULATIONS illustrate HST's ability to recover
the velocity-delay structure of an AGN accretion disk with
spiral density waves.
On each HST orbit, expose 1260s with G140L and 560s with G230L.
Sampling patternis as follows:
T=200d / dt=4d visits = 51
100d / dt=2d visits + 26 (middle 100d)
50d / dt=1d visits + 26 (middle 50d)
total visits 103.
SIMULATION 1c .
True maps:
emissivity ,
responsivity .
Synthetic data:
Lya ,
CIV ,
HeII .
Spectra:
1st ,
avg,rms .
Sampled lightcurves:
1380A ,
Lya,
CIV,
HeII.
1-D MEMECHO maps Psi(tau):
Chi2= 3 ,
2 ,
1 .
iter .
2-D MEMECHO maps Psi(v,tau):
G140L
map ,
fit ,
dat ,
(dat-fit),
(dat-fit)/sig ,
iter .
Return to
Keith Horne's homepage
Keith Horne (kdh1@st-andrews.ac.uk)