NuSTAR ToO and DDT observation requests will in general not be considered for events or sources that could have been predicted and proposed for in General Observer (GO) programs. This restriction is being adopted as a result of guidance from NASA's 2019 Senior Review.
In particular, requests for observations of the following types of sources and events require special justification describing why the requested observation type could not have been proposed as a GO target:
We encourage the community to propose to the various peer reviewed GO programs for NuSTAR ToO observations. Observations of all selected GO ToO observations automatically have the highest priority for scheduling.
|Active ToO/DDT observations|
|IGR J17379-3747||20 ks coordinated with the VLA||PI Jaodand|
|Holmberg IX X-1||4 x 50 ks coordinated with XMM-Newton (4x25 ks) for NuSTAR GO cycle-6 program 06197||PI Walton|
|SGR J1935+2154||2 x 20 ks||PI Gogus|
|IGR J16318-4848||20 ks coordinated with Chandra||PI Pradhan|
|Swift J1818.0-1607||20,30,40,80 ks for joint NuSTAR / XMM-Newton cycle-17 proposal 82359||PI Rea|
|Mrk 590||60+50+40 ks for NuSTAR GO cycle-5 program 05252 coordinated with Swift||PI Vestergaard|
|MAXI J0637-430||10x50 ks for NuSTAR GO cycle-5 program 05213||PI Tomsick|
Please review the NuSTAR schedules for details of upcoming observations and the table of approved ToO programs from the NuSTAR GO program and joint GO programs with Chandra, XMM-Newton, INTEGRAL, and the Neil Gehrels Swift Observatory.