The HEASARC welcomes your participation in a brief survey
to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.
Data Released by the LAT Team During the First Year
The LAT team will release high-level data on transients and monitored sources consisting of flux (fluence) on various timescales, spectra, source position, and errors (including estimate of systematic errors) for all of these quantities; no release in phase 1 of individual reconstructed photon events.
Regarding gamma-ray bursts:
- On-board detections released "immediately"
- Expect refinement of parameters (e.g. source position, fluence in several energy bands) with subsequent processing on the ground; release information as soon as it is available.
- For GRBs detected by GBM but not by LAT, a LAT upper limit will be released.
- Data from LAT for a GRB detected by the GBM which leads to LAT detection after autonomous re-point will be released as soon as practical.
Regarding sources of interest:
- Monitor and regularly release data, via the web, to the entire community, on list of sources of interest (proposed list here)
- Update data weekly and include fluxes (daily to weekly averages), estimates of the spectra (weekly averages), position, and errors
- Expected latency between receipt of Level 0 data at ISOC and availability of processed high-level data will improve with time. Nominal (best effort) schedule is:
- First month of Phase 1; 2 weeks
- Month 2-6; within 3 days
- Months 6-12; within 1 day
- Months 13-N; within 1 day (goal of 6 hours)
Regarding a preliminary source list (i.e., a preliminary "point source catalog"):
- Release (on the web) a preliminary source list that includes sources detected with very high confidence (e.g., >20 sigma).
- Release approximately 6 months after start of Phase 1
- Include source position, average source flux, and the peak source flux and estimated spectral index between 100 MeV and 1 GeV.
The intention is to review periodically the list of monitored sources with the Fermi Users' Group and the Project Scientist.