Page History

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

Time sharing on HESS observations

HESS could open a fraction of its observation time for GLAST-LAT initiated projects (5%? more? with AO Sept. 2007?), to be conducted as joint observations.
Possible targets: Galactic Center, highHigh-z AGN not already on H.E.S.S. planning list; variable LAT sources with hard spectra.

4

Coordinated observation campaigns

A specific and instantly applicable policy to request VHE observations on LAT targets. Somewhat similar to (3), but data sharing may or may not be the determining issue.
Min. goal: Back-to-back submissions from both collaborations.
Max. goal: see (3). This guarantees that at least data will be taken on a requested source, even if not ad hoc shared.

5

Upper limits or weak detections (below threshold for stand-alone publication) in regions of VHE coverage

Either individually requested or an occasionally updated u.l. map to help to constrain source models for LAT sources.
If available on different timescales, also to u.l./weak detections help constrain activity states for variable LAT sources.
Source identification selection without an "a prior" on the LAT spectrum. We don't know if there are IC-reprocessed components, distinct from LAT energetic coverage. Even sources with pronounced GeV cutoff may appear.

6

Repeated monitoring of not firmly identified galactic VHE/GeV source associations unidentified galactic sources seen by both H.E.S.S. and LAT

Investigate potential variability to aid in source identifcation.

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.