Table Of ContentOBSERVATIONAL PLASMA ASTROPHYSICS:
FIVE YEARS OF YOHKOH AND BEYOND
ASTROPHYSICS AND
SPACE SCIENCE LIBRARY
VOLUME 229
Executive Committee
W. B. BURTON, Sterrewacht, Leiden, The Netherlands
J. M. E. KUIJPERS, Faculty of Science, Nijmegen, The Netherlands
E. P. J. VAN DEN HEUVEL, Astronomical Institute, University ofA msterdam,
The Netherlands
H. VAN DER LAAN, Astronomical Institute, University of Utrecht,
The Netherlands
Editorial Board
I. APPENZELLER, Landessternwarte Heidelberg-Konigstuhl, Germany
J. N. BAHCALL, The Institute for Advanced Study, Princeton, U.S.A.
F. BERTOLA, Universita di Padova, Italy
W. B. BURTON, Sterrewacht, Leiden, The Netherlands
J. P. CASSINELLI, University ofW isconsin, Madison, U.S.A.
C. J. CESARSKY, Centre d' Etudes de Saclay, Gif-sur-Yvette Cedex, France
O. ENGVOLD, Institute of Theoretical Astrophysics, University of Oslo, Norway
J. M. E. KUIJPERS, Faculty of Science, Nijmegen, The Netherlands
R. McCRAY, University of Colorado, JILA, Boulder, U.S.A.
P. G. MURDIN, Royal Greenwich Observatory, Cambridge, U.K.
F. PACINI, Istituto Astronomia Arcetri, Firenze, Italy
V. RADHAKRISHNAN, Raman Research Institute, Bangalore, India
K. SATO, School of Science, The University of Tokyo, Japan
F. H. SHU, University of California, Berkeley, U.S.A.
B. V. SOMOV, Astronomical Institute, Moscow State University, Russia
R. A. SVNYAEV, Space Research Institute, Moscow, Russia
Y. TANAKA, Institute of Space & Astronautical Science, Kanagawa, Japan
S. TREMAINE, CITA, University of Toronto, Canada
E. P. J. VAN DEN HEUVEL, Astronomical Institute, University ofA msterdam,
The Netherlands
H. VAN DER LAAN, Astronomical Institute, University of Utrecht,
The Netherlands
N. O. WEISS, University of Cambridge, U.K.
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Table of Contents
Preface xi
I. Basic Properties of Cosmic Plasmal!!
Evolution of the Solar Corona from the Maximum to the
Minimum
H. Hara 3
Density, Temperature and Magnetic Field Structure of High
Latitude Corona
M. Guhathakurta, R. Fisher, K. Strong 13
Studies of Coronal Temperature
1. W. Acton, J. R. Lemen 15
The Behavior of Coronal Holes
A. Sanchez-Ibarra, M. Barraza-Paredes 19
Deep Survey of Solar Nano-Flares with Yohkoh
T. Shimizu, S. Tsuneta 27
The Sun as an X-Ray St~r: Overview of the Method
G. Peres, S. Orlando, F. Reale, R. Rosner, H. Hudson 29
Coronal Heating due to Twisting Faculae of 1 km Radii
T. Hirayama 39
Comparison between Statistical Features of X-ray
Fluctuations from the Solar Corona and Accretion Disks
S. Ueno 45
From the Sun to the Galaxy Clusters
K. Makishima 51
High Energy Emission from Blazars - ASCA Observation of
Blazars and Multiband Analysis -
T. Takahashi, H. Kubo, G. Madejski, M. Tashiro,
F. Makino 61
II. Origin of Cosmic Plasma Dynamics
Magnetic Reconnection and Dynamos in Laboratory Plasmas
P. K. Browning 73
A Mechanism Driving Solar Flares
A. Grandpierre 83
On the Origin of Helicity in Active Region Magnetic Fields
A. A. Pevtsov, R. C. Canfield 85
Vl
SXR Coronal Polar Jets and Recurrent Flashes
S. Koutchmy, H. Hara, K. Shibata, Y. Suematsu,
K. Reardon 87
The Filament Disappearance of May 7, 1992
E. Hiei, Z. Mouradian, 1. Soru-Escaut,
A. H. McAllister, K. Shibasaki, M. Ohyama 95
An Interdisciplinary Study of the Eruptive Prominence of
28 August 1992
Ta.Watanabe, M. Yamamoto, H. Hudson, M. Irie,
K. Ichimoto, H. Kurokawa, H. Yatagai 101
Yohkoh Observations of Superhot Plasma in Solar Flares
N. Nitta 107
Non-thermal Velocities Observed by Yohkoh
1. K. Harra-Murnion, S. A. Matthews, J. 1. Khan,
D. Alexander 113
Magnetohydrodynamics of Accretion Disks
R. Matsumoto, T. Matsuzaki, T. Tajima, K. Shibata 115
Magnetic Loops in the Hot Universe
S. Tsuneta, K. Makishima 121
III. Magnetic Reconnection as an Engine of Cosmic
Explosions
Computer Simulations of Twisted Flux Tubes and
Magnetic Reconnection
T. Hayashi, M. Okazaki, H. Kitabata, T. Sato 133
Magnetic Reconnection and Flares in Star Forming
Regions: Flares in Protostars
M. Hayashi, K. Shibata, R. Matsumoto 137
Magnetically Driven Jets from Accretion Disks
T. Kudoh, R. Matsumoto, K. Shibata 143
Numerical Simulation of Relativistic .let Formation in
Black Hole Magnetosphere
S. Koide, K. Shibata, T. Kudoh 149
Pair Production Cascade in a Black Hole Magnetosphere
K. Hirotani, 1. Okamoto 155
MHD Simulations of Magnetic Reconnection in the Solar
Corona and Flares
T. Yokoyama 161
Several Problems with Classical "Reclosing of Opened-up
Simple Arcade" Models for Arcade Flares and Arcade
Formation Events
Y. Uchida, K. Fujisaki, S. Morita, M. Torii, S. Hirose 171
Vll
Plasmoid Formation in Eruptive Flares
T. Magara, K . Shibata, T. Yo koya.ma 173
Plasma Motion in Solar Flares Observed by the Radio
heliograph
K. Shibasaki 175
Current Sheet Formation and Reconnection on Separator
Field Lines
D. W. Longcope 179
Bifurcation-Transition Dynamics in Solar Coronal Plasma
K. Kusano 185
A Unified Model of Solar Flares
K. Shibata 187
Activity Caused by Interacting Loops and Evolution of
Magnetic Field
Y. Hanaoka 197
Loop-loop Interaction in Impulsive Solar Flares Inferred
from Microwave and X-Ray Images
M. Nishio, K. Yaji, T. Kosugi, H. Nakajima,
T. Sakurai 207
Horseshoe Shaped Ha Solar Flares on 13 Oct 1995 and
Emerging Flux Model of Flares
Y. Suematsu, Y. Nishino, Y. Yan, J. Sato 209
<Joint Observation of Yohkoh and SQHO>
SoHO - Yohkoh Science Collaboration
P. C. Martens 217
The Coronal Diagnostic Spectrometer on SoHO
K. J. H. Phillips, R. A. Harrison 227
NOAA 7978: the Last Best Old-Cycle Region
H. S. Hudson, B. J. LaBonte, A. C. Sterling,
Te. Watanabe 237
S XV Spectral Properties of an Active Region from the
Yohkoh Bragg Crystal Spectrometer
A. C. SterUng 245
The Relationship between UV and X-Ray Brightenings
1. K. Harra-Murnion, S. A. Matthews 249
Joint Observatiop.s and an Active Region with SoHO and
Yohkoh
R. D. Bentley 251
VlIl
IV. High-Energy Particle Acceleration in Cosmic
Plasmas
Summary of Coronal Hard X-Ray Sources Observed with
Yohkoh/HXT
S. Masuda, T. Kosugi, T. Sakao, J. Sato 259
Hard X-Ray Emission from a Mirror Trap at the Top of
Reconnecting Loops
P. C. H. Martens, 1. Fletcher 269
Energy Release and Particle Acceleration in Solar Flares
with Respect to Flaring Magnetic Loops
T. Sakao, T. Kosugi, S. Masuda 273
What did Yohkoh and COMPTON Change in Our
Perception of Particle Acceleration in Solar Flares?
M. J. Aschwanden 285
Microwave and Hard X-ray Observations of an X-Class
Limb Flare
H. Nakajima, K. Fujiki, T. R. Metcalf, S. R. Kane,
M. Akioka 295
Magnetic Reconnection and Particle Acceleration in Solar
Flares
T. Kosugi, B. Somov 297
<Posters>
Activity in NOAA AR 7172
B. Anwar, M. Akioka 309
Acceleration of Particles in Collisionless Magnetic
Reconnection
P. K. Browning, G. Vekstein 313
The Formation and Evolution of the Coronal Holes
Associated with NOAA Region 7978
K. L. Harvey, H. S. Hudson 315
Horizontal Flow Field in the Solar Phbtosphere
R. Kitai, Y. Funakoshi, S. Ueno, S. Sano,
K. Ichimoto 319
Local Three-Dimensional MHD Simulations of the Parker
Instability in Differentially Rotating Disks
T. Matsuzaki, R. Matsumoto, K. Shibata, T. Tajima 321
Limits on the Temperature of Impulsive Phase Solar Flare
Hard X-Ray Emission, and the Amount of Thermal X-Rays
Present in the Yohkoh HXT-LO (14 - 24 keY) Channel
J. M. McTiernan 325
IX
Homologous Flare Series of February 1992
S. Morita, Y. Uchida, K. Fujisaki, S. Hirose 327
Simulation Study on Magneto-Gravity Instabilities in
Magnetic Shear Field
i
K. Moriyama, T. Miyoshi, K. Kusano 331
X-ray Plasma Ejections and Jets From Solar Compact
Flares Observed with the Yohkoh Soft X-Ray Telescope
M. Ohyama, K. Shibata, M. ShiIQ.ojo, T. Yokoyama 333
Nonthermal Effects in Fe XXV Spectra Observed by
Yohkoh/BCS
A. Phillips 337
Using the Yohkoh BCS to Check Element Abundances and
Ionization Fractions
K. J. H. Phillips, U. Feldman 341
Maximum Energy of Force-Free Magnetic Fields
T. Sakurai 345
A Study of Prefiare X-ray Brightenings
F. Farnik, S. Savy 349
Non-Linear Evolution of Erupting Coronal Magnetic Fields
B. Setiahadi, B. Anwar, M. Akioka, T. Sakurai 353
Study of Solar X-Ray Jets Observed by Yohkoh Soft X-Ray
Telescope
M. Shimojo, K. Shibata 357
Deconvolution of Yohkoh Soft X-ray Images
J. Shin, T. Sakurai, N. Miura 361
Post-Flare Structures Rising with Decreasing or Constant
Speed
Z. Svestka, F. F¥nik 365
Soft X-ray Features of Ptominence Eruption and
Disappearance
H. Tonooka, R. Matsumoto, S. Miyaji, S. F. Martin,
R. C. Canfield, K. Reardon, A. McAllister,
K. Shibata 371
Yohkoh Observations and Interplanetary Disturbances
S. Watari, Y. Kozuka, Ta. Watanabe :375
Evolution of Coronal Active Regions Observed with the
Yohkoh Soft X-Ray Telescope
S. Yashiro, K. Shibata, M. Shimojo 379
XUV Doppler Telescope aboard Sounding Rocket
T. Yoshida, R. Kano, S. Nagata, H. Hara, T. Sakao,
T. Shimizu, S. Tsuneta 383
x
Magnetic Shear and Soft X-Ray Flares in a Delta Sunspot
Region (NOAA 7070) in February 1992
H. Q. Zhang, T. Sakurai, K. Shibata, M. Shimojo,
H. Kurokawa, S. Morita, Y. Uchida 391
List of Pa.rticipa.nts 397
