Here you can obtain simulated quasar spectra for a variety of
ions (including Ly-alpha, CIV, and others) drawn from cosmological
hydrodynamic simulations of structure formation including
a physically-motivated prescription for enriched galactic outflows.
Once you hit submit, the desired spectra will
be generated, and a tar file will be created in
http://ursa.as.arizona.edu/~rad/slacr/your@email/your@email.tar.gz.
When ready, you will receive an email sent to your@email. You can then
go to the above location and download the tar file, which contains
an explanatory README file.
Please note: Your file will be deleted three days after the notification
email is sent. Also, please be patient; these spectra are made hot
and fresh-to-order, so they take some time! (e.g. 1000 spectra may take
several hours.)
Some helpful hints:
# of spectra -- Each spectrum traverses the simulation volume once, parallel
to the z-axis. Therefore they are short, with typical redshift
interval dz<<0.1; actual
dz depends on box size and redshift. Hence usually you want hundreds or
even thousands of spectra. The (x,y) positions are randomly chosen.
NOTE: nspectra must be a multiple of 4, or it will be reset as such.
Model -- The simulation naming convention is as follows:
The number after "d" (i.e. 16,32,64) corresponds to the box size in comoving
Mpc/h. The number after "n" (i.e. 256) corresponds to the number
of particles: 256^3 DM and 256^3 gas particles.
Currently available model is the d-vzw15 series, described
in Oppenheimer & Davé 2008.
The "d" series has Omega=0.25, Lambda=0.75, H0=70, n=0.95, and
Omega_b=0.044, and "vzw15" is our variable momentum-driven wind model
having sigma_0=150 km/s.
Redshift -- The 16 Mpc/h box is available down to z=2, the
32 Mpc/h and 64 Mpc/h boxes down to z=0. If you request a non-existant
redshift it will generate a tar file, but there will be no spectra in it and
the log file will contain an error message.
Analysis -- Once you add noise and smooth to your desired spectral resolution,
you may want to fit Voigt profiles with AutoVP.