These are unedited, not guaranteed to be accurate, and in any case should not
be construed as including literal quotes of what people said.
SD, MH, TB, PN, JM, JC, PN, CP, TS, Dave Davis, DB, JCar
Databases and related utilities
TS - testing different configurations of disks and memory for planning
purchase of flight data base systems
Likelihood
JC - Added output to gtlikelihood - not just counts spectra but also fluxes
and no longer ASCII table but also FITS binary table. Also added gtfindsource
to the distribution - evaluates likelihood for a point source and then moves it
around given the rest of the sources - like what gttsmap does but with Nelder-Mead
algorithm - amoeba - which is also now available as an optimizer
SD - Optimizes other parameters of model?
JC - Yes, optionally
SD - Can give position uncertainties?
JC - Yes, as discussed - keeps track of log L values in vicinity of minimum, and
on assumption of circular symmetry fits the shape and gives a good radius for
error circle. 2 tolerances involved - 1 for the individual fits at each
location and 1 for the tolerance of the convergence for the final position.
Number of evaluations depends on these, of course.
TB - How about whether there's a chance of getting a list or table of the
results from the catalog applied to DC2?
JC - Yes, I could try that - have been using it for GRB position optimization
TB - I'm going to Banff conference on statistics in high-energy physics - anyone
to talk to?
http://www.pims.math.ca/birs/birspages.php?task=displayevent&event_id=06w5054
GRBs
DB - no news
Pulsars
MH - No news - still working on conversion -
SD - Binary demodulation?
MH - Yes, can handle ephemerides and has been tested at some level.
Infrastructure
Workbook - CP - gtbackfile was last update and as far as I know is current
Cicerone - DB - Few comments received - need more than comments but also
contributions of text - details, like in pulsars and observation simulation.
Have made some changes and corrections and additions since the first version was
circulated 3-4 weeks ago. Those are posted. I've recently added the functions
that can be fit to LAT data that Jim provided.
SD - Overlap with Workbook in that regard?
DB - Not necessarily - the functions are not currently in the workbook. The
Cicerone is supposed to be like the Xspec manual and ABC guides for different
missions, which are fairly comprehensive
DB - Current version:
http://glast.gsfc.nasa.gov/ssc/dev/Analysis_Tools_Documentation/
Science Tools checkout 4?
SD - Maybe yes and maybe no
DB - Could be through gtobssim
SD - Yes
JM - For science group perspective - have a sequence of moderately sized
gtobssim and Gleam runs before the end of the year. The first of these could be
relatively soon. Two goals in all of this - science groups exploring
simulations - and for testing of science tools. Whatever we come up with want
to satisfy as many goals as possible with these simulations.
DB - GUC is scheduled to beta test the tools in November - could provide them
with DC2 data - they will spend only 2.5 days on it -
SD - All together
DB - Plan is that 2 weeks before hand we provide them with access to data,
tools, and documentation and they are supposed to start preparing. They will be
here for 3 days - Thur-Sat and 2 of those days are supposed to be sitting in
room working on analyses.
Nov. 16-18.
Last items
TB - I have a student working on tool for point source sensitivity
calculations along the lines of my memo. Wanted to ask about user interface
DB - We have a tool, question is how to put the guts in. We built something - I
can find it and send a link. Maybe we can mesh them together
JM - Were talking about something that sits as part of the science tools
distribution, right?
TB - A set of classes that makes the calculation. What a tool would do is the
question - lots of options. Given characteristics of a source and background
what is the predicted TS.
JM - Is it checked into the CVS at SLAC?
TB - My student's code is not yet
DB - No, this is a Web tool that is attached or will be attached to our Web site
for use of proposers to work on proposals - and had not been thinking of
checking it in.
JM - I would find it very useful to have some kind of tool to run in some way on
a command line - to input sources that our defined like we have for simulations
SD - May be not at that level of detail
JM - Could still be useful
TB - What Julie says is what we are working on - assumes a point source and
uniform background right now but does not have to end up that way in general.
DB - In your memo, I thought that the methodology was worked out for uniform
background and point source. This tool that we have constructed but has
everything but the guts, you'd specify a point on the sky and a source spectrum
and and find out what the TS for a given observing time. Not need to be a
complicated analysis underneath.
TB - This particular code will be ready in 2-3 weeks, given that I won't be
around for next week.
DB - Perhaps we could use a variant of it for our tool.