Yuji SHIRASAKI National Astronomical Observatory of Japan [email protected] Current Status of...
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Transcript of Yuji SHIRASAKI National Astronomical Observatory of Japan [email protected] Current Status of...
Yuji SHIRASAKI
National Astronomical Observatory of Japan
Current Status of Japanese Current Status of Japanese Virtual Observatory (JVO)Virtual Observatory (JVO)
JVO Members
Project Scientists
NAOJ• Y. Mizumoto• M. Ohishi• Y. Shirasaki• M. Tanaka• S. Honda
ICRR• N. Yasuda
System Engineers
Fujitsu Ltd.• Y. Ishihara• K. Abe• J. Tsutumi
DB Advisor
Ochanomizu U.• Y. Masunaga
DB maintained by NAOJ• Subaru 8.2m Optical-Infrared Telescope• Kiso 105cm Schmidt Camera• Okayama 188cm Optical Telescope• Nobeyama 45m Radio Telescope• Nobeyama Millimeter Array• Nobeyama Radioheliograph • VSOP• VERA • ALMA
Subaru
Nobeyama 45m
DB maintained by JAXA (NASDA+NAL+ISAS)
• ASCA X-ray astronomy satellite• YOHKO solar physics satellite• Ginga X-ray astronomy satellite• HALCA VLBI satellite• Geotail geomagnetosphere satellite• Akebono aurora observation satellite• ASTRO-F Infrared satellite• ASTRO-E2 X-ray satellite• SOLAR-B
ASCA
HALCA
YOHKO
Goal of the JVO Project
=
Researchers
10Gbps Super SINET, linked with GRID technology
JVOJVO
MetaDB
ScienceDB
MetaDB
ScienceDB
Distributed server system
GRID Registry
1. Seamless access to the distributed astro DBs– DB federation under Grid technology
GRID GRID
2. User-friendly data analysis environment– Accelerate multi-wavelength study
3. Robustness to a heavy access rate– Distributed server system for search and
analysis services on the Grid network.
JVO Prototype 1• Federation of the distributed data bases
– Globus Tool Kit 2 (user authentication, file transfer, remote job submission)– UDDI (to find a requested DB)
• Define a astronomical query language (JVOQL)– region specification, image request, cross-matching…
• Development of user interface– Query Language (QL) editor– VOTable Viewer & Plotter
• Science demo– Cosmic string search through the gravitational lens effect
Java2SE 1.4
Apache Tomcat
soapuddi
JDBC
UDDI Registory / Servlet Engine
Java2SE 1.4
JVO Server
UDDI4J
JVO Controller
Globus Toolkit (Server)
JVO Service(count)
SQLlibrary
Java2SE 1.4
Maintenance Tool
UDDI4J
UDDI Maintenance Tool
Hypertextcontents
Solaris8 (Possible at Linux)
Redhat Linux
JVO Service
ORACLE
DB Service
Free Software
Commercial Software
In House Software
Function
ApacheSOAP
① ServletDownLoad
Globus Toolkit (Client)
Redhat Linux
PostgreSQL (DBMS)
DB Service
The following free software is included by globus toolkit.• OpenSSL (Secure Socket Library)• OpenLDAP (LDAP Server)• wu-ftpd (ftp server)
JVO Prototype System Architecture
③ Find Service
Netscape Communicator
Java2 Plugin
JVO Client(servlet)
JVO Client
② RequestObservation
Monitoring
UDDIData
SUBARUSupCamz-band• get & parse GSDL
• pre condition check• execute Service• post condition check
• register• update• delete
GSDL(copy)
JVO Service(select)
SQLlibrary
JVO Service(image)
JVO Service(X match)
ImageData
GSDLGridFTP
ImageData(copy)
⑥ spawn Service
⑤ execute Service
Check status
SUBARUDataBase
JVOController
Globus Toolkit
AVO
Globus Toolkit
NVO
Internet
ImageData
SUBARUSupCami-band
Globus Toolkit (Server)
JVO Service
SQLlibrary
SQLlibrary
JVO Service(count)
JVO Service(select)
Copy imate data by GridFTP
Copy imate data by GridFTP
JVO Service (X match)
JVO Service (image)
③ get GSDL
④ Get GSDL by GridFTP
GSDL
⑦ issue SQL
④’ Get GSDL by GridFTP
⑦’ issue SQL
⑤’ execute Service
ImageData(copy)
SUBARUDataBase
Gb Ether
⑥’ spawn Service
Globus Toolkit (Server)
JVO Service
SQLlibrary
JVO Service(select)
JVO Service (X match)
GSDL
Redhat Linux 2MassDataBase
PostgreSQL
DB Service
2Mass DB
ImageData(copy)
ImageData
JV
O S
yste
mD
B
Meta DB
Astro Data
Meta DB
Astro Data
JVO Prototype 1 System Architecture
Us
er
Interfac
e
Registry( UDDI)
• JVO QL Editor• Resource Viwer
Query InterfaceUser Authentication
Science Dcmo
• Gravitational Lens Search
Analysis interface
JVOQLParser
Scheduller
Executer
Co
ntro
ller
• VOTable Viewer
• Plotter
• Image Viewer
Result Viwer
Analysis Server
• login
GSI
JVOQLGlobus-job-submit
VOTableFITSGridFTP
JVOQL, VOTableJDBC
VOTable, FITSJava ServletJSPJava Beans
SOAP
JVOQLVOTable, FITSJava Servlet, JSPJava Beans
Web Browser
JVO Query Language (Catalog+Image)Create view myEROtable asSelect s.Bmag, s.Rmag, t.Hmag, t.Kmag, …, sr.BOX(POINT(s.ra,s.dec),w,h) as Rimage, tk.BOX(POINT(s.ra,s.dec),w,h) as Kimage, …From SUBARU s, 2MASS t, …, SUBARU.R sr, 2MASS.K tk, …Where XMATCH(s,b,…) < 3 arcsec and (s.Rmag – t.Kmag) > 6 mag and BOX(POINT(ra0,dec0), w0, h0) and …
Create view with the user specified name in JVO system.
Select attributes from each catalog server. Column names can be expressed in UCD.
Select cutout images from each image data server.Image area can be specified by BOX or CIRCLE operand.
Select the catalog server.
Select the image data server.
Cross-match distributed catalogs.
Query condition based on distributed catalog.
Specify search area with the same syntax as cutout image specification.
JVO Query Language (Image)Select s.a, t.a, …From SUBARU.R s, 2MASS.K t, …Where (s.AREA() OVERLAP t.AREA()) as a
JVOQL Editor
Catalog/Table/Column selection
set search region
set cross match condition
set image size
Gravitational Lens Search Demo
Scientifc objective:
Cosmic string search through the gravitational lens effect
Looking for pair objects satisfying the following conditions:
Separation angle < 5”
Same morphology
Similar brightness
Similar color
Aligned along a string (straight line ?)
This demo searches pair objects satisfying the checked conditions and the corresponding image data are also retrieved.
Produced at a phase transition of early universe ?
Density = 1022 g/cm Gravitational Lens Effect
Features:• < 5 arcsec
• No magnification
• No distortion
• Observed as twins of a galaxy
Gravitational Lens Search Demo (1/2)Query Language Editor
separation angle
color difference
Parameter range
Catalog/Table/Column selection
Gravitational Lens Search Demo (2/2)
jpeg images for 3 bands
3-color composite image
SED
Color-Color plot
Summary: Toward JVO Prototype 2
• Globus TK3
• File Transfer ---- GridFTP and/or GSI SFS
• Remote Job submission ---- GRAM
• Implement Resource Metadata in JVO registry
• Analysis services (SExtractor, Photometry, Image Subtraction… )
2001 2002 2003 2004 2005 2006 .JVO project start
Prototype I Prototype II Practical System
Experimental service start
Road Map