X-RAY IMAGING AND
SPECTROSCOPYMISSION (XRISM)
Makoto S. Tashiro (ISAS/JAXA, Saitama University)
on behalf of XRISM team

ASTRO-H “Hitomi”

MISSON CONCEPT• The high precision spectroscopy with imaging  X-ray microcalorimeter• The wide field of view imaging with the conventional X-ray CCD camera.

2021-03-09

Instrument

FOV/pix

ΔE (FWHM @6 keV)

Resolve(XMA + X-raymicrocalorimeter)

2.9’ □ /6 x 6 pix

7 eV(goal 5 eV)

Xtend(XMA + X-ray CCD)

38’ □/
1280 x 1280 pix< 250 eV at EOL(< 200 eV at BOL)

HEAPA symposium: XRISM (Makoto S. Tashiro)

Energyband
0.3 – 12keV
0.4 – 13keV

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THE SPACECRAFT AND THE ORBITMassDimension
Design life

2.3 t
7.9 m x 9.2 m x 3.1 m
3 years + cryogen freeoperation• Orbit altitude = 575 +/- 15 km• Inclination angle = 31 degree• Orbital period = 96 min
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HEAPA symposium: XRISM (Makoto S. Tashiro)

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SCIENCE OBJECTIVES“Revealing material circulation and energy transfer in cosmic plasmas andelucidating evolution of cosmic structures and objects”• How did the large structure formed?
• What forms and sustain the clusters of galaxies structure against gravity ?
• Gas pressure, turbulence, and their spatial distribution• How were the elements and energy produced and distributed in theuniverse ?
• Metallicity of SNs and their remanants• Dissipation of the material• Velocity of elements of SNR metals

and Accretion and outflow (winds) of AGNs, galaxies• New astrophysics with X-ray micro-calorimeter
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HEAPA symposium: XRISM (Makoto S. Tashiro)

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XRISM FOR THE WORLDINTERNATIONAL COLLABORATION• XRISM is a JAXA led joint mission with NASA
• ESA collaborates under agreement with JAXA
• NASA provides;
••
•
•
•

X-ray mirror assembly (Resolve, Xtend)
X-ray calorimeter detector assembly (Resolve)
Aperture assembly (Resolve)
ADR assembly (Resolve)
X-ray calorimeter amplifier and ADR electronics (Resolve)• ESA provides;
••
•
•
•

2021-03-09

NASA-JAXAJAXA-ESAFilter wheel mechanics and electronics (Resolve)
Loop heat pipe (Resolve)
Star trackers (Bus)Magnetic torguers (Bus)
Geomagnetic Aspect Sensors (Bus)HEAPA symposium: XRISM (Makoto S. Tashiro)

5XRISM team meeting #2
14-17 May 2019, Sagamihara, JapanSTATUS OF PROJECT
Science Team meetingTM3 2020-11/12(SM1)@online2018-10-1/3@Kanazawa)SM3 2020-06 @online

International Team
Meeting (TM1) 2018-5@Nara
JAXA pre-projec/ NASA project startNASA CDR
Aos for Participating Scientists

now

2021

2019

“XARM” proposed
Hitomi termination  LLs
investigaton

2018

2017

Hitomi Failure

2016

2023

TM2 2019-5 @ISAS/JAXA

2020

Hitomi Lessons Learned
summary and share
XARM proposalJAXA,NASA , ESA collaboration

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SM2 (2019-10 @Ehime)2022

GO Program
Launch & PV

Verifications & GND Calibration
Fabrication/ Integration

PDR

SDR, project

RFP

MDR/SRR
HEAPA symposium: XRISM (Makoto S. Tashiro)

Science Team Meeting #3
July 2020, on zoom
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OBSERVATION PHASES
80• Initial phase (Launch -- L+3 months)

70• Critical operation• Function check• Nominal phase ( -- L+ 3 years)• Initial calibration• Performance Verification phase ( 6 months)• Guest Observation phase

Month from launch60• （Latter phase （after mission completion review))

504030201002021-03-09

HEAPA symposium: XRISM (Makoto S. Tashiro)

latterphase, 40

Guest
Observations
26cal/PV, 7initial, 37

INITIAL PHASE
80• Critical operation period ( ~ 1 week)70• Commissioning period ( ~ 3 months)• S/C bus system• Observation instruments• Ground data processing system• Parameter tunings (bus and mission instruments)

Month from launch• Launch – S/C separation -SAP deployment -3 axis control• Start cooling system
60• Power/Thermal control, communication, attitude control
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4030
20
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HEAPA symposium: XRISM (Makoto S. Tashiro)

latterphase, 40

nominal,26

cal/PV, 7
initial, 38

NOMINAL PHASE： CALIBRATION &PERFORMANCE VERIFICATION80• XRISM Science Team is responsible for PV observations• Purpose70• To verify the capability to fulfill the scientific goals• The data are reserved to the XRISM Science Team

Month from launch• To showcase the XRISM transformational science60• The identified scientists directly contributing to develop
H/S/W or to manage XRISM science activity.

PV target list has been released…
https://xrism.isas.jaxa.jp/research/proposer/PVtargets/index.html• XRISM Guest Scientists (XGS) will be added• 3 agencies will call for the XGS to add special expertisefor each PV observation• Limited access to each observation data

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HEAPA symposium: XRISM (Makoto S. Tashiro)

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latterphase, 4040
30
20100GuestObservations, 26cal/PV, 7initial, 39NOMINAL PHASE:
GUEST OBSERVATION PHASE
80• XRISM is open to community after the PV phase• JAXA, NASA and ESA call for proposal and makeselection independently according to theagreements• ARK/RPS (proposal system) will be utilinzed.

60

Month from launch• Each PI submits to his/her regional agency (JAXA,NASA, or ESA)

70

• Announce of Opportunity (AO) 1 will be
released just after the launch.

50
40
30
20

HEAPA symposium: XRISM (Makoto S. Tashiro)

Guest
Observations,
26

10
0

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latterphase, 40

cal/PV, 7initial, 310

FOR THE NEWWORLD WITH XRISM

Visit
https://xrism.isas.jaxa.jp/research/2021-03-09

HEAPA symposium: XRISM (Makoto S. Tashiro)

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