「すざく」衛星搭載広帯域全天モニタ (HXD/WAM)によるGRB観測の現状

bgfecO.+T"qom
(HXD/WAM)hklGRBQ>iCA
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Sa1E M(\D)a
B $aE !aX0 K(DG)a
E a<E P6aYV a&E]LaX0 7(D)a
; H#(-)a
JHa4( U*a@ (2D)a
N '/(GSFC)a? F:a^5 %!(ISAS/JAXA)
jdbgfecHXDnrp
Today’s topic
I. bgfec+T"qom(HXD/WAM)
II. HXD/WAMiCA
III. HXD/WAMhklGRBR3iCA
2006 9/21
2006 ,`I
`Z
1
I. -20/.&?=<
EHXD-WAM)
X#
(HXD-II)
Cmain detector
,,,,16 GSO/BGO phoswitch counter
,,,,+PIN diode
cross section
top view
20 BGO active shield
Swift-BAT
Effective area
BATSE-LAD
HXD-WAM
300
5000
Energy(keV)
2006 9/21
10-600 keV 4'+
(W74a %)
-6*"(400cm2;1MeV)
-8$2 (FOV > 2pi str)
Wideband All-sky Monitor
(HXD-WAM)
*": 300 keV 4
9>@:DAB;: 50-5000 keV
GRB?=<513)7
2006 ,!,(
2
II. HXD-WAM
(i) Trigger status
GRB( %!*&
2005 8/22~
2006 8/31 %)")#%
Confirmed
Possible
SGR
Solar flare
Short GRBs
1sec
74
126Single peak
52
20sec
7
22
Particle event 80
Noise,fake,
others
158
Multiple peak
20sec
,,-+$ 'GRB
2006 9/21
2006 3
II. HXD-WAM+
WAM GRB spectrum
"$'#+GRB#/MeV.)-&+*
GRB051008
GRB060213
GRB060317
MeV emission !
WAM+GRB,!+0*%("1
2006 9/21
2006 4
II. HXD-WAM4
(ii) Calibration status
HXD-WAM, Swift/BAT, Konus-Wind13+/GRB378
Cross-calibration
GRB060317
Short hard GRB
GRB051008
Long hard GRB
Konus-Wind
HXD-WAM
HXD-WAM
Konus-Wind
Swift-BAT
100 keV 1<>;=?457*1)0'8
Flux4 5&10-20%, #140% @GRB43A
Mass Model :-8,219."6,2(
!
2006 9/21
2006 %
%$
5
HXD-WAMJPQGRB2KGRB,%
- GRBH!1HK63
JPQ'
- $+K.*(Nousek et al. 2005) <
(HETE2, Swift)
- short burst K0& (Gehrels et al. 2005)
Prompt emission JE=FL=NCAK/@$DF=Q
HXD-WAM G MeV 8NG prompt
emissionR(><#"RQ
BATSEJPQEp
(Preece et al. 2000)
9Epeak LIBNGMF=Q??
HETE2:softJO@Q(Sakamoto et al. 2005)
hardKLS
SS
:MeV8K5
MeV-GeV8K14?(Gonzalez et al. 2003)
2006 9/21
2006 ;);7
100 1000
6
III. HXD-WAM&*,GRB
(i) Epeak distribution
WAM$26037% 26 '1857
(Long:19, Short:7) &"#Epeak -(!
Num of events
BATSE 4B catalog
(Preece et al. 2002)
WAM samples
10
100100010000
Epeak (keV)
.47/9$ BATSE *+)
2006 9/21
2006 ,
7
III. HXD-WAM068GRB
(ii) MeV-GeV AD@>;C24)+#7/"$
MeV1=B<?C:038&.$-%,"8!
GRB051008
MeV Epeak 5
8'0*,
GRB060213
8'0##97(
1 MeV Epeak
GRB060813
Soft Epeak 5
8'0*,
lightcurve
2000
500
Epeak
2000
Epeak
500
500
Epeak
200
Time since trigger(sec)
2006 9/21
2006 8
Flux-Epeak correlation
Epeak(keV)
GRB060213%&
flux "#
1000 GRB051008
GRB060213
GRB060813
100
10-7
10-6
10-5
Long GRB
% Epeak $
'%
) ("
!(
100-1000 keV flux (erg/s/cm2)
2006 9/21
2006 9
III. HXD-WAM$')GRB
(iii) Long/Short GRB
Long/short GRB %-1,.2%
vs hardness
Hardness
Ratio
BATSE 4B
WAM samples
0.1
1.0
10
100
(T90)
"*%&short GRB
2006 9/21
Epeak -All
-Short
-Long
10
100
1000
10000
Epeak(keV)
long '(&03/#+!
2006 10
IV. \V]
HQOMI:)&>lif(HXD-WAM)ZF
MeVD\U;29WGRBlifVPTCX,
%SN.F-"?`Y$9UFGRBb0PTJa
- qU7120YGRB0'
- MeVD\U [Rekdgmb#9
- 100 keV UY flux $Z+U 40 %
EEEEoekdgm!3Z_M
4ULTJap
WAMU0PRGRBb5JTF1GW</K@cUJa
- Epeak ZFBATSE_`^jnhXKa
- MeVDY*A</^9
- long/short GRBY=8Wekdgm</
http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/
2006 9/21
2006 (E6EB
11