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|
|Mrk 590||20+20+60+40 ks for NuSTAR GO cycle-8 proposal 8233, possibly coordinated with NICER||PI Lawther|
|Swift J1727.8-1613||4x20 ks for joint NuSTAR / NICER GO cycle-5 proposal 6057||PI Capitanio|
|Swift J1727.8-1613||10x20 ks for joint NuSTAR / XMM-Newton proposal 88054||PI Petrucci|
|Swift J1727.8-1613||5x20 ks for joint NICER / NuSTAR GO cycle-9 proposal 9094||PI Neilsen|
|SMSS J114447.77-430859.3||2x80 ks for joint NuSTAR / XMM-Newton cycle-22 proposal 92270||PI Kammoun|
|1ES 1927+654||4x40 ks for NuSTAR GO cycle-9 proposal 09085 coordinated with NICER||PI Laha|
|SN 2022xxf||2 x 50 ks for joint NuSTAR / Chandra cycle-24 proposal 24500203||PI Brethauer|
|4U 1630-472||4x20 ks for the joint NuSTAR / NICER GO cycle-5 proposal 6057, coordinated with IXPE||PI Capitanio|
|SGR J1935+2154||50+120 ks for the joint NuSTAR / XMM-Newton GO proposal 88218||PI Rea|
|B3 2247+381||2x40 ks for NuSTAR GO cycle-8 proposal 08166 coordinated with Swift and VERITAS||PI Feng|
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.