NuSTAR users can propose to observe with additional facilities in support of their proposed NuSTAR observations.The NuSTAR mission
has established joint observing programs with X-ray Multi-Mirror Mission (XMM-Newton), and the X-Ray Imaging and Spectroscopy Mission (XRISM), which enable NuSTAR General Observer (GO)
proposers to obtain data from any (or a combination) of these facilities together with NuSTAR for correlated studies. Proposals requesting joint observations must clearly justify the need for the XMM-Newton,
and/or XRISM observations in order to accomplish the science
goals of the NuSTAR investigation.
Details of these joint programs are provided below.
XMM-Newton NuSTAR and XMM-Newton have an arrangement which makes available joint observing time for both observatories.
Proposals for joint NuSTAR/XMM-Newton programs will be accepted
up to a total of 1.5 Ms of XMM-Newton observing time. Joint proposals must
provide a compelling justification of the need for both the
NuSTAR and XMM-Newton
data for achieving the primary science goals and receive a Category A, B
or L rating to be considered for acceptance. No XMM-Newton observing time will
be awarded without the need for NuSTAR observing time on the same target.
XMM-Newton data sets obtained through approved joint NuSTAR/XMM-Newton
proposals have the standard XMM-Newton exclusive-use period.
XRISM XRISM has made up to 500 ks available to NuSTAR proposers who wish to take advantage of this opportunity.
The exclusive use period for XRISM data obtained in this joint program will be subject to the
default 12 month proprietary period. NuSTAR observations will be scheduled to overlap XRISM observations on a best effort basis.
Joint observations with XRISM must be receive a Category A, B, L to be approved for observations.
No XRISM observing time will be awarded without the need for NuSTAR observing time on the same target. NuSTAR/XRISM Phase-1
proposals selected through this Call for Proposals are eligible for funding solely through the NuSTAR GO program.
The XRISM General Observer Facility will perform feasibility checks on
the proposed observations and reserves the right to reject any observation
determined for any reason to be technically unfeasible or in violation of the policies
governing XRISM GO observations. Note that neither generic TOO
targets nor multi-cycle programs are allowed for XRISM.
Such a rejection would likely affect the entire proposed science program and could impact the award of NuSTAR observing time as well.
Selected proposals will be allocated XRISM observing
time without additional scientific review, if judged technically feasible.
