20th HEAPA WS 2021/3/8-10

Road map of HEAPA-related
future missions
HEAPA 4th Future Plan Review Committee 2020/10-2022/9

Lead: Kazuhiro Nakazawa (Nagoya-U/KMI)

JAXA

Summary of the 3rd committee outcome

VisionPreface
Astronomical X-ray and Gamma-ray observations are directly related with
understanding the how matter and energy exits within the Universe, notonly celestial objects, but also the volume itself. They are also key
enablers to dig into the extreme physics. In the two broadest aims ofastrophysical research, understand the Universe as of now, andunderstand how it came to be as such, high-energy astrophysics plays anessential role.

Summary of the 3rd committee outcome

Vision: three big goals
Understand our Universe; matter, energy and spacetime, and its origin
Dark matter : LSS/clusters to see where DM are, and search for DM direct signal
Missing baryon : how the baryon and metals are distributed in the Universe

Origins of the large diversity in Universe and celestial objects
Galaxy and SMBH co-evolution and their impact on re-ionization
Metal synthesis in the Universe
Relativistic high-energy phenomena in the Universe

Verifying fundamental physics in extreme condition
Extreme gravitation : stellar-mass BH, SMBH
Extreme high-density matter EoS : Neutron star, quark star
Extreme magnetism : Magnetar
Diffusive shock : wide variety of yet to be known interactions therein
Dark Matter (Re): search for its direct signal

Summary of the 3rd committee outcome

Mission Categories by JAXAclass

How to launch

Definition and budget

StrategicLarge class

H-IIA, H-III

Top science. Flagship mission ofeach community. Can beinternational, lead by Japan.
(< ¥30B ~ $300M)

CompetitiveMiddle class

EpsilonAgile and challenging(< ¥15B ~ $150M))

MoO

LargeInternational
Collaboration

Within JAXA total budget of¥1B/year ($10M/yr)

Small projects

Small international Each project shall be < ¥0.2BCollaboration($2M) total(sub-paylode,balloon, ISS etc.)

Summary of the 3rd committee outcome

Science “Environments”
USA and ESA
Decadal survey (Large missions and Probes) + MIDEX/SMEX proposals
Lynx, AXIS, Strobe-X, TAP, Arcus, IXPE, COSI-SMEX, +Cosmic Vision and Voyage 2050
Athena + Theseus, + many under discussion

China, India and Others
Aim of this session

Astrophysics and Cosmology overall
JWST, LSST, SKA, CTA will come within this decade. GW: LIGO (US, India)/Virgo
are improving or up-coming, also KAGRA (Japan). Neutrino: ICE cube, HyperKAMIOKANDE will also come. We are living in a multi-frequency/multi-messenger
astronomy era. Time domain is also an emerging field.

Summary of the 3rd committee outcome

HEAPA Road Map as of 2020/10
Dev.

Obs.

HEAPA
main
streamDev.

HEAPA-inv
olved intercommunity

Dev.

Late-phase
Obs.
Obs.
Obs.

Dev.
Obs.
Dev.

InternationalObs.
Dev.
contribution
Ballooning (XL-Calibur, Smile, GRAINE etc..)
Nano-sats
International contribution
JAXA

Continuous technology development activities

High-reso
Spectroscopy
Wide-band(incl. hardX-rays)
transientObs.

solar mag-reconnection

soft X-ray polarimetry

Refer to the following
talks for details ofthese missions

Tasks for 4th committee(2020/10-2022/9)
Revisiting road map 2021-2030• Continuous update

Start discussing visions for 2040
• Wide vision• Japan-lead with international major collaboration,• Japan-local with international support,• foreign-lead Japan major contribution,• foreign-lead Japan support+ Young researchers encouraging actions: increasing space-born
mission development experiences, and international collaboration
activities