The schedule for RXTE Cycle 12 is as follows:
||October 23, 2006 as an Announcement|
|Due Date for Proposal Submission
||January 26, 2007, 4:30pm ET|
|Proposal Peer Review
|Start of Cycle 12 observations
||on or around June 1, 2007|
Changes for Cycle 12
Cycle 12 Observations begin on or about June 1 and Cover 18 Months
Cycle 12 may be the last call for proposals for RXTE (nominal
termination date is near March 1, 2009).
In general, RXTE Cycle 12 proposals should cover
the time period of June 29, 2007 through January 1, 2009, with the
following exceptions. Observations that require coordination with
other observatories can be proposed to begin as early as May 1, 2007.
Observations can be proposed for as late as February 28, 2009 with
compelling justification, however PIs should be aware that demands on
RXTE's time may be great in the final two months of its operations.
Cycle 11 TOOs will not be triggered after June 28th.
For PIs with monitoring programs in Cycle 11
The nominal end of Cycle 11 is March 2007. PIs who wish to continue
their monitoring campaigns in Cycle 12 should submit a Cycle 12 proposal
requesting the time necessary to perform observations in the Cycle 12
period (18 months starting June 1, 2007). Upon receipt of the Cycle 12
proposal, the RXTE SOF will extend the Cycle 11 monitoring observations
up through the Cycle 12 peer review, using holdover time from previous
cycles with any necessary additional time contributed by the RXTE mission.
Proposals accepted at the peer review will then have their observations
extended until the start of AO-12; proposals
rejected at the review will cease observation after the peer review. The
peer review is currently scheduled for early April 2007.
No Guest Observer Funds for Cycle 12 - No Budget Submissions
The Cycle 12 announcement solicits proposals for observations only.
No Guest Observer funding is available for RXTE Cycle 12. In this regard,
Cycle 12 will be similar to RXTE Cycles 5-7.
AKBAR/RPS is the sole site for proposal submission: Registration
Cycle 12 will use the new AKBAR/RPS system to receive electronic
proposals. This is based on the old RPS system familiar to proposers
from previous RXTE cycles, but users must create an account and log in.
Please refer to
AKBAR/RPS for RXTE for further details.
Note: NSPIRES is NOT being used for Cycle 12 - only submit to
Required Elements for a Complete Proposal
Since there are no budgets to submit for this Cycle, the required
elements for a complete proposal submission are: Cover Page,
General Form, Target Form (with optional Constraints form),
and Scientific Justification, all submitted to AKBAR/RPS. For
more information, see the
Checklist for Electronic Submission.
Other Features of RXTE Cycle 12
Here, we give an overview of important information to keep in mind,
that is essentially unchanged from previous cycles.
Proposers are specifically encouraged to consider projects
that would profit uniquely from large amounts of observing time,
to enable large-scope investigations to be achieved. Large proposals,
defined as those that request observing times of 500 ksec or more, are
thus allowed 6 pages for the Scientific Problem and Technical
Feasibility section of the proposal (see Information for Proposers C.1.1, C.2.2.2).
The PCA is currently being operated with
reduced duty cycles for three out of the five PCU
detectors. Proposers should calculate exposure times
and discuss technical feasibility with an expectation of using an
average of three PCUs. If special circumstances warrant or require the
use of four or five PCUs for an observation (e.g., faint source
spectroscopy or investigations of weak QPO signals), then a quantative
justification must be clearly stated in the Technical Feasibility
section. (Although every effort will be made to fulfill requests
for more than three PCUs, operational limitations make it impossible
to guarantee that the requested number of PCUs will be available.) In
addition, it should be noted that some observations, especially those
for source monitoring and/or extragalactic sources, may be conducted
with two PCUs, and proposers should discuss the expected impact
of this limitation on their observing program.
- All proposals submitted in response to this Announcement must
be for new pointed RXTE observations using the PCA and/or HEXTE
instruments. Proposals for analysis of ASM data, proposals for
analysis of archival RXTE data, and proposals for complementary
observations or theoretical work that do not require new pointed
observations should not be submitted.
- As before, proposers who have previously been
awarded RXTE observing time are required to append a page to their
proposal listing by Cycle, title, and proposal number their previously
accepted RXTE proposals and the status of the data analysis or publications
that have followed from them.
- A Cycle 12 proposal for a target
already accepted for observation by RXTE in one or more of the
previous Cycles is likely to be more successful at
the peer review if it has a different observing plan or scientific
emphasis from previous proposals, and the scientific investigation
cannot be completed with archival data. The Cycle 1,
and Cycle 10
and Cycle 11
programs can be perused in their entireity by following the links
just given, or browsed using
- Unobserved TOO targets approved in the previous Cycle must be
reproposed for Cycle 12, if the PI still wants to observe them. The
observing status of Cycle 11 TOOs can be found on the SOF's
- For TOO proposals, the probability that the TOO will be
triggered during the Cycle must be estimated. Include the estimate, and
any justification, in the proposal text.
- Alternate targets are no longer supported due to the
- Faint source exposure times for the HEXTE may be as long as
It was earlier stated that cosmic background fluctuations would dominate Poisson errors for exposures above 100-200ks. However, new estimates which account for the 40% dead-time fraction and loss of detector PWB2 indicate that this faint source confusion limit may not be reached until at least 500ks - see the new HEXTE Feasibility Chapter for details.
- The minimum observing time that can be requested for a single pointing is 1000 seconds. This limit applies to raster scans and monitoring observations as well as to single observations.
Cycle 12 Announcement and Related Documents
The RXTE Cycle 12 Announcement solicits observing proposals for participation in
the National Aeronautics and Space Administration (NASA) program to
acquire scientific data from the Rossi X-ray Timing Explorer (RXTE), for
observations to be carried out in the interval beginning around June 1,
2007, and lasting for eighteen months.
Checklist for Electronic Submission of RXTE Proposals
RXTE CYCLE 12 PROPOSAL SUBMISSION IS FULLY ELECTRONIC THROUGH AKBAR/RPS.
No hardcopies will be accepted. No submission to NSPIRES. AKBAR/RPS
submission is the only requirement.
For electronic submission, PIs should:
Proposal Tools and Other Resources
- Response matrices and PHA files for simulations are available via anonymous FTP at legacy.gsfc.nasa.gov in the directory
- The proposal aids PIMMS, viewing,
recommd, hextemporize and hexterock are
available on the web or
via anonymous FTP at legacy.gsfc.nasa.gov in the directory
RXTE Instrument Configurations: the easy route
for help in choosing RXTE instrument configurations appropriate
to your observation.
- The RXTE Technical Appendix gives
in-depth details of the RXTE pointed instruments and their configurations.
If you'd like to be a Peer Reviewer ....
The RXTE Cycle 12 Peer Review will take place in the Baltimore/Washington
area in April 2007.
Reviewers must have a PhD at the time of the Peer Review.
If you would like to be considered as a
reviewer, please send mail to the Peer Review list.
For help with AKBAR/RPS, see AKBAR/RPS for
RXTE. If that doesn't answer your questions, you may write to the
RPS Help Desk.
For all other questions, please send mail to the
RXTE Guest Observer Facility.
If you have a question about RXTE, please send email to one of our