Cross-wavelength synergy:VSOP-2 & CTA projects

M. Kino (NAOJ)On behalf of VSOP-2 Science Working Group

「高エネルギー宇宙物理学の将来と CTA 」 2010 Jan 9th,@ 宇宙線研

Why VSOP-2 & CTA? M87 (VERITAS, VLBA 43GHz, HESS, MAGIC collaboration 2009)

提案：　「 VSOP-2&CTA 同時観測」を是非やりませんか？日本主導の「ユニークな科学成果」が期待できる（後述）。

R~δct

VSOP-2人類史上最高の空間分解能

Outline Looking back the AGN-science history in

terms of “Radio” & “VHE” collaboration.

• 2000 ~ VLA - Chandra Era ~ arcsec world

• 2008 ~ VLBI - Fermi Era ~ mas world　

• 201? ~ VSOP-2- CTA ~ 0.1 mas world

D

Angular Resolution

∝ λ(wavelength)/ D(baseline)

VLA & Chandra era: (2000~)

Comparable angular Resolution ≲ 1 arcsec

VLA (Radio) Chandra (X-ray)

External Shock World

Forward-Shocks & Reverse-Shocks

Centaurus A Cygnus A

Yaji+Kraft+

What we have learned

UNTe/UB~1-100

(e.g., Tashiro+, Croston+, Hardcastle+, Kataoka+ Isobe+,Yaji+)

“invisible” power (thermal e, proton)(e.g., MK+, Birzan+, Ito+ 　 )

Particle dominance for large (≳ 10kpc) jets.

Isobe+08

UNT e

/U B~1

UNT e

/U B~100

UNTe

UB

Long term monitor of blazar motions by VLBA 15 GHz. 　

MOJAVE (Monitoring Of Jets in AGN with VLBA Experiments) http://www.physics.purdue.edu/~mlister/MOJAVE/index.html

VLBI-Fermi Era: (2008~)VLBA (Radio)MOJAVE survey

空間分解した多数イメージによって初めて分かる

AGN sky: MOJAVE/Fermi view

MOJAVE/Fermi blazar studies (Lister+, Kovalev+, …).MOJAVE/Fermi/CTA will lead to statistical studies of blazars.

CTA together with VSOP-2 KSPs?

ひとこと補足 : KSP = Key Science Program

VLBI 分野以外の多波長、理論の方々

のご参加も大歓迎いたします。

公募制です。

•Core of perseus cluster (z=0.0176, i.e., D =77 Mpc)•Mini radio-lobe 3C 84 t_age = size/ velocity~50 yrs, size ~5pc (Asada+06)

Extremely Young Jet: 3C 84

Radio lobe

5 pc

3C84(HALCA)

Perseus Cluster (Chandra X-ray)

Radiocore

jet

GeV/Radio-Core Outburst Abdo+09

EGRET

Fermi

UMRAO

COS-B

Moment of Birth!

C3 is the new-born baby!

C3 flux’s rising!コアを空間分解し、誕生の瞬間を初検

出！

Time (year)

Specifications of VSOP-2

VSOP-2/CTA will see…

Resolution of VSOP-2(22 GHz) reaches ~0.1 pc!

Abdo+09

CTA may detect TeV γ. Variability is a key.

VSOP-2/CTA willoffer a key to solving the origin of γ-ray.

Nagai+ 1 pc

VERA 22 GHz

Towards the central engine: M 87

ここを空間分解

2008 flare: VHE/VLBI correlation! M87 (VERITAS, VLBA 43GHz, HESS, MAGIC collaboration 2009)

76 Rg

本質は空間分解

Time

VSOP-2/CTA will see…

VSOP-2 (43 GHz) willsee this ~ 0.0032pc eye!

Wagner+10

CTA easily detect TeV γ. Variability is a key.

VSOP-2/CTA will show us a hint for the central-engine mechanism.

Walker (NRAO)

0.08pc

Summary

VLBI は、 1 ミリ秒角以下の空間分解能を持つ唯

一無二の装置です。是非 CTA & VSOP-2 KSPs

をやりましょう！

• 3C 84 　　 γ 線放射の起源 に迫る！　　• M 87 　　中心エンジン機構に迫る！

補足資料

VSOP-2/Astro-G project members

5 GHz vs. 22 GHz

5 GHz(VSOP)

22 GHz(VERA)

Ang. Resolution

∝ λ(wavelength)/D(baseline) D

Science Goals

Central enginemechanism

Origin of gamma-ray

Origin of cosmic-ray

Gamma-bright jet

Gamma-dim jet

Accretion flow