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xrism pog
Contents
List of Figures
List of Tables
1
. Introduction
1
.
1
Purpose and Scope of this Document
1
.
2
Cycle 3 Updates to the POG
2
. Mission Description
2
.
1
Spacecraft: Orbit and Attitude
2
.
2
Overview of
XRISM
Instruments
2
.
2
.
1
X-ray Mirror Assembly (XMA)
2
.
2
.
2
Resolve
2
.
2
.
3
Xtend
3
. Observation Policies
3
.
1
Target Selection and Prioritization
3
.
2
Target of Opportunity (TOO) Proposals
3
.
3
Time-Critical Observations
3
.
4
Joint Observation Opportunities with Other Missions
3
.
4
.
1
Joint
XRISM
-
XMM-Newton
proposals
3
.
4
.
2
Joint
XRISM
-
NuSTAR
proposals
3
.
5
Duplicate Targets
3
.
6
Pointing Constraints
3
.
7
Events After Submission
3
.
8
Other opportunities for requesting
XRISM
observations
3
.
9
Data Rights
4
. X-Ray Mirror Assembly (XMA)
4
.
1
XMA Components
4
.
1
.
1
Mirror
4
.
1
.
2
Pre-Collimator
4
.
1
.
3
Thermal shields and heaters
4
.
2
Estimated Performance
4
.
2
.
1
Focal Positions and Optical Axis
4
.
2
.
2
Effective Areas
4
.
2
.
3
Vignetting
4
.
2
.
4
Angular Resolution
4
.
2
.
5
Stray Light
5
. Resolve
5
.
1
Overview
5
.
2
The microcalorimeter
5
.
2
.
1
Photon detection
5
.
2
.
2
Anti-coincidence detector and particle background
5
.
3
Event processing system
5
.
3
.
1
Event triggering
5
.
3
.
2
Pulse height determination
5
.
3
.
3
Event grading: low, mid, and high-res grades
5
.
3
.
4
Event grade branching ratios
5
.
3
.
5
Pulse Shape Processor limit
5
.
3
.
6
Cross-talk
5
.
4
Detector gain
5
.
5
Line spread function
5
.
6
Calibration sources and MXS operations
5
.
7
Background
5
.
8
Timing
5
.
9
Planning observations with Resolve
5
.
9
.
1
Filter selection
5
.
9
.
2
Observing faint to moderately bright point sources
5
.
9
.
3
Observing extended sources
5
.
9
.
4
Observing bright sources
6
. Xtend/SXI
6
.
1
Xtend Basics
6
.
2
Observation Options for General Users
6
.
3
Things to Be Considered for Bright Source Observations
6
.
3
.
1
Photon Pileup
6
.
3
.
2
Out-of-Time Events
6
.
3
.
3
Sacrificial Charge
6
.
4
SXI in Depth
6
.
4
.
1
X-ray Detection Mechanics and Operation
6
.
4
.
2
Charge Transfer Inefficiency and Charge Injection Operation
6
.
4
.
3
Cosmic Ray Echo (Crosstalk) Events
6
.
4
.
4
Hot Pixels
6
.
4
.
5
Area Discrimination
6
.
4
.
6
Supporting Components
6
.
4
.
7
Change from the
Hitomi
SXI
7
. Spatial-Spectral Mixing: Extended Sources and Crowded Fields
7
.
1
Spatial-Spectral Mixing (SSM)
7
.
2
Feasibility Recommendations for Assessing and Accounting for SSM
7
.
2
.
1
Demonstration of SSM Contamination
7
.
3
Multiple extended and point sources of interest within FOV; a spatially-resolved spectral simulation walk-through with
HEASIM
7
.
4
Estimating the Background
7
.
5
Caution: Pointing Coordinates and Branching Ratios
7
.
6
Considerations for Observation Planning
8
. Resolve Observations of Bright Sources
8
.
1
Bright Source Challenges
8
.
1
.
1
High-Resolution Event Rates
8
.
1
.
2
Event Loss
8
.
1
.
3
Minimizing Cross-talk
8
.
1
.
4
Energy scale shift
8
.
2
Observing Strategies: Filters and Off-Axis Pointing
8
.
3
After Observing
8
.
4
Summary of Observing Recommendations
9
. In Depth Discussions on Spatial-Spectral Mixing: From Proposal Planning to Analysis
9
.
1
Challenges of analyzing extended sources
9
.
2
Facing the challenge: methods and prospects
9
.
3
Consequences and general considerations
10
. Tools for Proposers
10
.
1
Online/Interactive Tools
10
.
2
Simulation Software
10
.
3
Useful Resources
References
