Current Status of Japanese Virtual Observatory

1
Current Status of Japanese Virtual Observatory

• Masatoshi Ohishi
• National Astronomical Observatory of Japan
• and Sokendai
• masatoshi.ohishi_at_nao.ac.jp

2
Collaborators

• Fujitsu Ltd.
• K. Monzen
• K. Kawarai
• Y. Ishihara
• H. Yanaka
• Y. Yamaguchi
• M. Ishida
• N. Saito
• K. Abe
• J. Tsutsumi
• H. Nakamoto
• Y. Morita

• NAOJ
• Y. Mizumoto
• N. Yasuda
• Y. Shirasaki
• M. Tanaka
• S. Honda
• Ochanomizu U.
• Y. Masunaga
• Osaka U.
• S. Shimojo his team
• Titech
• S. Matsuoka his team

Ken Miura
3
Large Telescopes of NAOJ

• Subaru (optical Infrared) _at_ Hawaii
• Nobeyama (Radio)
• single dish f 45-m
• interferometer 6 x f 10-m
• solar interferometer 84 x f 75-cm
• HALCA in orbit f 8-m

4
Subaru
5
Subaru Telescope
6
(No Transcript)
7
(No Transcript)
8
45m Radio Telescope
9
(No Transcript)
10
VSOP
11
JAXA is going to join JVO !!
Infrared Satellite by JAXA
Launch 2005 ?
12
Data Productivity

• Nobeyama Radio 1TB/yr
• Subaru_at_Hawaii 20TB/yr
• ALMA(planned) PB/yr
• Flood of excellent data (survey data)
• Digitized Archived

13
10 Gbps
14
HPC High Speed NETWORK

• GRID Technology
• ? it is possible to federate multi-wavelength-DB
  s and computing facilities for data analyses
• ? Virtual Observatory

15
JVO prototype Ver. 1

• Establish seamless access to federated DBs by
  using the Grid technology
• Define JVO Query Language, and implement its
  parser
• Test environment is in a closed subnet

16
(No Transcript)
17
Query Files can be stored in a local PC (WS)
18
Monitor Window Refreshed automatically in every
15 seconds
Dynamical creation of a workflow
19
Sample Outputs
20
(No Transcript)
21
JVO Query Language
22
SkyQL ADQL

• JVOQL has been adopted as one of the basis for
  SkyQL (standard query language in IVOA)
• XML description of SkyQL ADQL
• Astronomical Data Query Language

23
Serious Issue

• Q) GT2 has too large overhead before starting
  actual jobs !! They are several seconds.
• A) For batch jobs, such as database accesses, the
  overhead could be negligible. However users can
  never wait for several second for interactive
  data analyses.
• Request) Overheads must be lt 0.1 seconds
• excluding the network delays.

24
Partially solved !!

• Introduction of NMI
• -- authentication module binary
• Analysis of the source codes of GTK2
• -- polling interval 30 sec -gt 3 sec
• Elapsed time was halved ! But , still very slow.

25
Improvement of U.I.

• Need to know about SQL to use JVOQL
• ?
• An editor to create JVOQL from GUI
• Edittable on screen
• ? more flexibility for advanced users

26
(No Transcript)
27
Search for Gravitational Lensescaused (?) by
Cosmic Strings

• SXDS data observed by Subaru
• Query results were obtained less than 5 min.,
  displaying SEDs
• It has been proven
• that VO can
• accelerate
• researches.

28
Cosmic Strings?

• Theoretical origin of the elementary particles
  which existed (?) at t 10-35 s,T 1015 GeV
• Not a POINT, has its SIZE
• Width lt 10-22m, Length size of the Universe.
• Mass of 10km string the Earth

29
Gravitational Lens

• A phenomenon that the space-time is distorted by
  a huge mass object, and multiple images of
  another object behind the massive object are
  observed around it.

30
(No Transcript)
31
Gravitational Lens by Cosmic Strings
32
Development of Prototype2

• For preparation of Operational System
• User registration single sign-on
• User area over Firewall GSI-SFS
• Adoption of OGSA
• Implementation of several analysis tools

33
?????????1
???????
??????
ORACLE
GWSDL
OGSA -DAI
???? DB
????count
Gb Ether
Gb Ether
2MASS
???????
DAISGR
Globus Tk
Linux
???????
??????
? ? ? ? ? ? ? ? ? ?
????????????
????????
???????
????
??????
??????
?????
??????????
DAISGR?? GWDSL?? ??????????
????
Linux
?????
??????????
Web Server
????????? N
??????????
Globus Toolkit V3
???????
PostgreSQL
WSDL
???? DB
????????? ?
??????? ?? ?
????count
????
FW
????????
Globus Toolkit V3
??????
JVO-QL??????
SUBARU SupCam z-band
Web????
Solaris8
????
Windows, Solaris8, Linux
????
Solaris8
34
Road Map

• 2003 Prototype 2
• ? development of components for operation
• 2004 start to develop operational system
• late 2004 ?? trial use
• 2005-2006 trial use upgrade
• 2007 prepare for partial operation of
• ALMA

35
ALMA in Chile (sub-mm wave)
36
VO Projects in the world

• NVO (USA), AVO (EU),AstroGrid (UK)
• Germany, Canada, Russia, Australia
• India, China, Italy, France, Korea, JAPAN
• Interoperability International Virtual
  Observatory Alliance (IVOA)

37
www.ivoa.net
38
WGs in IVOA

• Registry, Data model, Data Access Layer, VOtable,
  VOQL, Grid, UCD, Standard Documents
• Executive Committee
• Interoperability meetings were held twice

39
MVC
????
MVC
??????DB
??????
MVC
Web ???
JVO ????
VO? ????
?????
????
????????
?????? ????
???? ??
???
VO? Viewer
??? ???
????
DA/DB
DB
Data
???? ?????A
?????
????
????????
?????
????
????????
GRID?? A
???? ?????C
???? ?????B
Web ???
VO ????
VO? ????
????????
???
VO? Viewer
????

?????
?????
??
GRID?? C
GRID?? B