意外に静かだったペルセウス座銀河団中心の高温ガス

28
7
7
a
120
- 3
t
O
r
a
a
O
O
a
X
X
SXS: Soft X-ray Spectrometer
O
t
O
O
O
a
SXS
r
a
r
t
SXS a
O
a
O
O
X
t
t
O
ASTRO-H
r
A
A
O
O
t
O
e
t
O
J
A
r
X
t
A
O
A
R
a
r
a
R
A
a
O
Nature
)
a
r
a
(
A
r
a
a
t
t
Su
t
r
O
A
a
A
O
r
O
J
A
A
O
X
a SXS
(
T
r
t
r
J
X
a
X
a
A
r
a
a
a
NGC
t
A
r
O
J
r
A
r r
(
A
a
A
O
a
J
r
A
t
O
A
t
O
a
O
A
t
a
HR
r
r
t
t
%a
O
A
50 mK
O
O
A
(
K A
t
164±10 km
ASTRO-H
SXS
a
SXS a
t
r
a
1 K
X
-
m X
tX
N
A
a X
N
r
tO
t
A
r
O
SXS a
CCD
N
X
t
t
a
.47 65
)
The Quiet Intracluster Medium in the Core of the Perseus Cluster
Hitomi collaboration
O
!(
)
!JAXA/NASA/ESA/SRON/CSA