Date: Wed, 7 May 2003 09:10:55 +0900
From: SHIBASAKI kiyoto <shibasak@nro.nao.ac.jp>
Message-Id: <200305070010.h470Atc23672@burst4.nro.nao.ac.jp>
To: roger.hess@gsfc.nasa.gov
Subject: Fw: SIRA abstract (.ppt link)

>From shibasak  Thu May  1 11:38:14 2003
Date: Thu, 1 May 2003 11:38:11 +0900
From: SHIBASAKI kiyoto <shibasak>
To: gopals@fugee.gsfc.nasa.gov
Subject: SIRA abstract (.ppt link)

SIRA Workshop (May 13-14, 2003 near GSFC) Abstract

           Data handling experience from Nobeyama Radioheliograph
               Kiyoto Shibasaki (Nobeyama Radio Observatory)

Nobeyama Radioheliograph (NoRH) is a radio interferometer dedicated for solar
observations, i.e. one of SIRAs (Solar Imaging Radio Arrays).  NoRH has been
operating for almost one solar cycle since 1992.  NoRH produces rather uniform data
sets (8 hr/day, 1 sec (+100 msec for bursts) cadence, images of 17 GHz I&V + 34 GHz,
less influence from cloud and rain).  Various kinds of researches on solar physics
have been done using the NoRH data: quiet sun, active regions, prominence eruptions
and flares.  Due to very efficient radio emission mechanism by high-energy electrons
produced by solar flares, study of high-energy phenomena is one of the major subjects
using NoRH data combined with RHESSI recently.

For scientists who are not working with "radio" and "interferometer", some jumps are
needed to use data from NoRH and also from SIRA:  synthesizing images from visibility
data and interpreting radio emission features to get physical parameter.  It is
necessary to prepare well-calibrated image data to increase data users.  It is also
important to tell non-radio users the meaning of radio features.  Online data archive
with easy search mechanism and availability of images through the INTERNET immediately
after the data download are also very important to attract scientists and also space
weather forecasters.

  http://solar.nro.nao.ac.jp/user/shibasak/SIRA/SIRA.ppt