Working version of the things LAT would like the HESS team to share with us.
At the moment, this page is not linked to anything else. Once we have a draft, it can be linked to the TeV page in Confluence.
Proposal - for each item, provide a brief description of why LAT wants it.LIST 1 - General and Programmatic Topics
Number | Item Wished from HESS | Rationale |
---|---|---|
1 | Information about telescope performance and source observability, to the extent HESS is willing to share (Olaf's list - probably expand into several items here) | Allow estimates of LAT ability to add useful data |
2 | Information about data analysis plans and procedures, to the extent HESS is willing to share (Olaf's list - probably expand into several items here) | Help determine comptability with LAT approaches |
3 | Observing schedule | LAT can make sure quick results on HESS target sources are available |
4 | Derived detections or upper limits (from archive) for LAT sources with hard enough spectra to be of interest | Constrain source models and/or time variability. |
Observing schedule | Enable LAT collaboration to react in a timely way on particular objects of interest on the basis of LAT observations. Community service for HESS. | |
2 | Observing history | Enable LAT collaboration to check if VHE exposure is present. |
3 5 | Tool to show visibility/sensitivity for any sky position at any time | If LAT sees something (like a flare) of interest, this tool would determine whether HESS should be notified. In addition, this information might determine whether a pointed Target of Opportunity for GLAST might include HESS. |
6 | Notifications of observed transient events | If HESS sees a transient event we could decide whether this should trigger a pointed Target of Opportunity. This kind of information is traditionally shared among VHE observatories and could be useful for us as well. |
4 | Information about telescope performance/sensitivity, | Enable LAT collaboration to estimate usefulness of (any/further) VHE exposure for a particular scientific problem/approach. To be used in conjunction with the visibility tool and the response rationale in 3 - ToO. |
5 | Information about data formats and open-source analysis tools. | Enable LAT team to determine the best approaches for common analysis with the LAT FITS format data and FTOOLS- and ROOT-based analysis. |
6 7 | A procedure to obtain science products (lightcurves and skymaps) adapted to GLAST time and spatial resolution | Having comparable science products (e.g. in terms of rebinning) optimizes the comparison of data sets. . |
7 | Personal point(s) of contact | For efficient working on a well-defined scientific topic (MWL data analysis, joint proposal planning, coordinated observation campaigns etc. ) a personal representative for easy, knowledgeable, and daily exchange. Topically distinguishable (via working groups?) |
LIST 2 - Science-Oriented Topics
Number | Item Wished from HESS | Rationale | |||
---|---|---|---|---|---|
1 | Cross-calibration | Joint approach in methodology, feasibility and application. Long term issue. | |||
2 | Notifications of observed transient events | If HESS sees a transient event LAT could decide whether this should trigger a pointed GLAST Target of Opportunity. This kind of information is traditionally shared among VHE observatories and could be useful for us as well. | |||
3 8 | Time sharing on HESS observations | HESS could open might consider to reserve a fraction of its observation time for GLAST-LAT initiated projects (5%? more? with AO Sept. 2007?). GLAST science data products on these projects would be shared with the HESS collaboration. , to be conducted as joint observations. | |||
4 9 | Coordinated observation campaigns | A specific and instantly applicable policy to request VHE observations on LAT targets. Somewhat similar to (83), but data sharing may or may not be the determining issue. | |||
10 | Extended VHE source templates | Actual data products of extended VHE-sources to be used as morphology templates in LAT high-GeV analysis and MWL modeling. | |||
11 | X-calibration | Joint approach in methodology, feasibility and application. Long term issue. | |||
5 | Upper limits or weak detections (below threshold for stand-alone publication) | 12 | Upper limits in regions of VHE coverage | Source identification without an "a prior" on the LAT spectrum. We dont know if there are IC-reprocesses components, distinct from LAT energetic coverage. Even sources with pronounced GeV cutoff may appeal. Ideal: occasionally updated upper limit map. | Constrain source models for LAT sources on case-by-case base or for systematic studies on the basis of an occasionally updated u.l.-map. |
6 | Repeated monitoring of unidentified galactic sources seen by both H.E.S.S. and LAT | 13 | Repeated monitoring of not firmly identified galactic VHE/GeV source associations | Investigate potential variability to aid in source identifcation. | |
14 7 | VHE source spectra & lightcurves | Detailed MWL modeling of a few (t.b.d.) dedicated LAT/VHE objects. | |||
8 | Extended VHE source templates | Actual data products of extended VHE-sources to be used as morphology templates in LAT high-GeV analysis and MWL modeling. | 15 | Personal point(s) of contact | For efficient working on a well-defined scientific topic (MWL data analysis, joint proposal planning, coordinated observation campaigns etc. ) a personal representative for easy, knowledgeable, and daily exchange. Topically distinguishable (via working groups?) |