TABLE OF CONTENTS

Symposium on Nobeyama Radioheliograph

-A New Tool for Understanding of Solar Flares-

( in commemoration of the late Prof. Haruo Tanaka )

Preface......................................................................................................................................................

Outline of Nobeyama Symposium ………………….……………………………………………………1

S. Enome

1. Nobeyama Radioheliograph

A New Radioheliograph at Nobeyama .................................................................................................... 3

H. Nakajima and the Radioheliograph Group

New Radioheliograph Antennas .............................................................................................................16

T. Takano and the Radioheliograph Group

Receiver of the Nobeyama Radioheliograph ………………………………………………………....…24

M. Nishio and the Radioheliograph Group

Data Processing System of the Radioheliograph ………………………………………………………..29

Y. Hanaoka and the Radioheliograph Group

2. What role do radio observations play for understanding of solar flares ?

Highlights of Microwave Solar Research with Large Sidereal Arrays ……………….......................... 35

M. R. Kundu

Theoretical Models for Solar Flares........................................................................................................ 47

T. Sakurai

Collaboration with X-ray Observations.................................................................................................. 53

T. Kosugi

Collaboration with Gamma-ray Observations......................................................................................... 60

M. Yoshimori

Collaboration with Optical Observations…………………………….................................................... 64

H. K urokawa

3. Review of High-resolution Radio Observations

VLA Observations of Microwave Emission from Flares ...................................................................... 73

T. S. Bastian

Flare Build-up, Pre-flare Activity at Microwave Region.........................................................................78

K. Shibasaki

Microwave and (Hard) X-ray Images of Solar Flares........................................................................83

K. L. Klein

4. Observation Programs in 1990's

VLA Observing Programs in 1990's........................................................................................................ 89

T. S. Bastian

The Siberian Solar Radio Telescope ....................................................................................................... 90

G. Ya. Smolkov

Modernization of the RATAN 600 for Solar Observations and the Results of Solar Investi-

gations Made with the RATAN-600 ...................................................................................................... 105

G. B. Gelfreikh

Owens Valley Solar Array...................................................................................................................... 123

D. E. Gary and G. J. Hurford

BIMA Telescope for Solar Observations............................................................................................... 126

M. R. Kundu and S. M. White

SOLAR-A............................................................................................................................................... 130

Y. Ogawara

CORONAS Project................................................................................................................. ............... 132

V. N. Oraevsky, V. V. Fomichev and Yu. D. Zhughda

Optical Solar Telescopes and Observation Programs in Japan …………………...................................141

K. Ichimoto

Callibration of Multi-Element Radio Heliograph (comment) .................................................................145

H. W. Urbarz

International Collaboration ………………………………………………………………………….......148

S. Enome

5. Recent Results

A Radio Indication of Flare Build-up.................................................................................................... 151

G. Ya. Smolkov

A Large Scale Flare with Multi Sources of March 16, 1989........................................................ ….... .172

Y. Irimajiri, M. Nishio, T. Takano and K. Shibasaki

Fine Structure of Solar Microwave Bursts................................................................................ ............ 177

C. Fang

Heating and Acceleration in a Solar Flare　...........................................................................................184

H. Nakajima, T. Takakura, K. Ohki and M. Nishio

Microwave Bursts and Coronal Mass Ejections…................................................................................190

I. M. Gherto

CMEs and Interplanetary Type-II Radio Bursts....................................................................................200

T. Watanabe and Lengyel-Frey

Filament Disappearances Observed by 32GHz Radio Maps.................................................................206

S. Watari

Solar Flares and"Microflares" ………………………………..………………………..……………….213

H. S. Hudson

Numerical Simulation of Reconnection Associated with Magnetic Flux Emergence. …..……………219

Ｋ.Shibata and S. Nozawa

6. Poster Papers

Strong Magnetic Fields in the Corona..................................................................................................227

S. M. White, M. R. Kundu and N. Gopalswamy

The 22nd Cycle Program of Modernization ef the RATAN-600 for Solar Observations…………….234

G. B. Gelfreikh

Solar Radio Micro-bursts......................................................................................................................238

T.S. Bastian

Microwave and Hard X-ray Diagnostics of Nonthermal Electrons in a Solar Burst…………………..244

G. J. Hurford, D. E. Gary and J. W. Bromley

Concluding Remarks or a Summary ……………………………………………………………………251

S. Enome

Appendix

Photograph of Participants………………………………………………………………………………253

List of Participants ......................................................................................................................... ...... 254

Program of the Symposium ................................ .................................................................................. 255

Messages to the Symposium .......... ..................... ……………………………………………………258

Messages to Prof. Keizo kai from the Participants........................... ......................................... ………260