Ebook: Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond

Since its launch in 1991, the Yohkoh satellite has been returning unprecedented observations of solar flares and the dynamic solar corona. This book is a collection of papers presented at a meeting held in: Yoyogi, Tokyo, on the occasion of Yohkoh's fifth anniversary of operation. The papers constitute a summary of observations and results over the five years, including contributions based on data from Yohkoh's hard and soft X-ray telescopes and its spectrometer experiments. The five years of data, covering approximately one-half of a solar cycle, reveal a fresh perspective on solar science, with a new picture of solar flares and the active Sun emerging. Also, for the first time there are extensive results from Yohkoh observations of the Sun during the solar minimum period.
This wide-ranging volume will be of interest to workers in solar physics and X-ray astronomy. It also contains material appropriate for supplemental reading for graduate students in solar physics.

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Since its launch in 1991, the Yohkoh satellite has been returning unprecedented observations of solar flares and the dynamic solar corona. This book is a collection of papers presented at a meeting held in: Yoyogi, Tokyo, on the occasion of Yohkoh's fifth anniversary of operation. The papers constitute a summary of observations and results over the five years, including contributions based on data from Yohkoh's hard and soft X-ray telescopes and its spectrometer experiments. The five years of data, covering approximately one-half of a solar cycle, reveal a fresh perspective on solar science, with a new picture of solar flares and the active Sun emerging. Also, for the first time there are extensive results from Yohkoh observations of the Sun during the solar minimum period.
This wide-ranging volume will be of interest to workers in solar physics and X-ray astronomy. It also contains material appropriate for supplemental reading for graduate students in solar physics.

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Since its launch in 1991, the Yohkoh satellite has been returning unprecedented observations of solar flares and the dynamic solar corona. This book is a collection of papers presented at a meeting held in: Yoyogi, Tokyo, on the occasion of Yohkoh's fifth anniversary of operation. The papers constitute a summary of observations and results over the five years, including contributions based on data from Yohkoh's hard and soft X-ray telescopes and its spectrometer experiments. The five years of data, covering approximately one-half of a solar cycle, reveal a fresh perspective on solar science, with a new picture of solar flares and the active Sun emerging. Also, for the first time there are extensive results from Yohkoh observations of the Sun during the solar minimum period.
This wide-ranging volume will be of interest to workers in solar physics and X-ray astronomy. It also contains material appropriate for supplemental reading for graduate students in solar physics.
Content:
Front Matter....Pages i-xiii
Front Matter....Pages 1-1
Evolution of the Solar Corona from the Maximum to Minimum....Pages 3-12
Density, Temperature and Magnetic Field Structure of High Latitude Corona....Pages 13-13
Studies of Coronal Temperature....Pages 15-17
The Behavior of Coronal Holes....Pages 19-26
Deep Survey of Solar Nano-Flares with Yohkoh....Pages 27-28
The Sun as an X-Ray Star: Overview of the Method....Pages 29-38
Coronal Heating Due to Twisting Faculae of 1 km Radii....Pages 39-44
Comparison between Statistical Features of X-ray Fluctuations from the Solar Corona and Accretion Disks....Pages 45-50
From the Sun to the Galaxy Clusters....Pages 51-60
High Energy Emission from Blazars....Pages 61-70
Front Matter....Pages 71-71
Magnetic Reconnection and Dynamos in Laboratory Plasmas....Pages 73-82
A Mechanism Driving Solar Flares....Pages 83-84
On the Origin of Helicity in Active Region Magnetic Fields....Pages 85-86
SXR Coronal Polar Jets and Recurrent Flashes....Pages 87-94
The Filament Disappearance of May 7, 1992....Pages 95-100
Coronal and Interplanetary Disturbances Associated with an Eruptive Prominence of 28 August 1992....Pages 101-106
Non-Thermal Velocities Observed by Yohkoh....Pages 107-112
Magnetohydrodynamics of Accretion Disks....Pages 113-114
Magnetic Loops in the Hot Universe....Pages 115-120
Front Matter....Pages 121-130
Computer Simulations of Twisted Flux Tubes and Magnetic Reconnection....Pages 131-131
Magnetic Reconnection and Flares in Star Forming Regions: Flares in Protostars....Pages 133-136
Magnetically Driven Jets from Accretion Disks: Nonsteady 2.5D-MHD Simulation....Pages 137-142
Numerical Simulation of Relativistic Jet Formation in Black Hole Magnetosphere....Pages 143-148
Pair Plasma Production in a Black Hole Magnetosphere....Pages 149-154
MHD Simulations of Magnetic Reconnection in the Solar Corona and Flares....Pages 155-160
Several Problems with Classical “Reclosing of Opened-up Simple Arcade” Models for Arcade Flares and Arcade Formation Events....Pages 161-170
Plasmoid Formation in Eruptive Flares....Pages 171-172
Plasma Motion in Solar Flares Observed by the Nobeyama Radioheliograph....Pages 173-174
Current Sheet Formation and Reconnection on Separator Field Lines....Pages 175-178
Bifurcation-Transition Dynamics in Solar Coronal Plasma....Pages 179-184
A Unified Model of Solar Flares....Pages 185-186
Activity Caused by Interacting Loops and Evolution of Magnetic Field....Pages 187-196
Loop-Loop Interaction in Impulsive Solar Flares Inferred from Microwave and X-Ray Images....Pages 197-206
Horseshoe-Shaped H? Flares on 13 Oct. 1995 and an Emerging Flux Model of Flares....Pages 207-208
Soho — Yohkoh Science Collaboration....Pages 209-214
The Coronal Diagnostic Spectrometer on SOHO....Pages 217-226
NOAA 7978: The Last Best Old-Cycle Region?....Pages 227-236
S XV Spectral Properties of an Active Region from the Yohkoh Bragg Crystal Spectrometer....Pages 237-244
The Relationship Between UV and X-Ray Brightenings....Pages 245-248
Front Matter....Pages 249-250
Joint Observations of an Active Region with Soho and Yohkoh....Pages 131-131
Activity in NOAA AR7172....Pages 251-255
Acceleration of Charged Particles in Collisionless Magnetic Reconnection....Pages 309-312
The Formation and Evolution of the Coronal Holes Associated with NOAA Region 7978....Pages 313-314
Horizontal Flow Field in the Solar Photosphere....Pages 315-318
Local Three-Dimensional MHD Simulations of the Parker Instability in Differentially Rotating Disks....Pages 319-320
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 keV) Channel....Pages 321-324
Homologous Flare Series of February 1992....Pages 325-326
Simulation Study on Magneto-Gravity Instabilities in Magnetic Shear Field....Pages 327-330
X-Ray Plasma Ejections and Jets from Solar Compact Flares Observed with the Yohkoh Soft X-Ray Telescope....Pages 331-332
Nonthermal Effects in Fe XXV Spectra Observed by Yohkoh/BCS....Pages 333-336
Using the Yohkoh BCS to Check Element Abundances and Ionization Fractions....Pages 337-340
Front Matter....Pages 341-344
Coronal Hard X-Ray Sources in Solar Flares Observed with Yohkoh/HXT....Pages 257-257
Hard X-Ray Emission from a Mirror Trap at the Top of Reconnecting Loops....Pages 259-268
Energy Release and Particle Acceleration in Solar Flares with Respect to Flaring Magnetic Loops....Pages 269-271
What did Yohkoh and Compton Change in Our Perception of Particle Acceleration in Solar Flares?....Pages 273-284
Microwave and Hard X-Ray Observations of an X-Class Limb Flare....Pages 285-294
Magnetic Reconnection and Particle Acceleration in Solar Flares....Pages 295-296
Activity in NOAA AR7172....Pages 297-306
Acceleration of Charged Particles in Collisionless Magnetic Reconnection....Pages 309-312
The Formation and Evolution of the Coronal Holes Associated with NOAA Region 7978....Pages 313-314
Horizontal Flow Field in the Solar Photosphere....Pages 315-318
Local Three-Dimensional MHD Simulations of the Parker Instability in Differentially Rotating Disks....Pages 319-320
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 keV) Channel....Pages 321-324
Homologous Flare Series of February 1992....Pages 325-326
Simulation Study on Magneto-Gravity Instabilities in Magnetic Shear Field....Pages 327-330
X-Ray Plasma Ejections and Jets from Solar Compact Flares Observed with the Yohkoh Soft X-Ray Telescope....Pages 331-332
Nonthermal Effects in Fe XXV Spectra Observed by Yohkoh/BCS....Pages 333-336
Using the Yohkoh BCS to Check Element Abundances and Ionization Fractions....Pages 337-340
Maximum Energy of Force-Free Magnetic Fields....Pages 341-344
A Study of Preflare X-Ray Brightenings....Pages 345-348
Front Matter....Pages 349-352
Non-Linear Evolution of Erupting Coronal Magnetic Fields....Pages 257-257
Study of Solar X-ray Jets Observed by the Yohkoh Soft X-ray Telescope....Pages 353-356
Deconvolution of Yohkoh Soft X-ray Images....Pages 357-360
Post-Flare Structures Rising with Decreasing or Constant Speed....Pages 361-364
Soft X-ray Features of Prominence Eruption and Disappearance....Pages 365-369
Yohkoh Observations and Interplanetary Disturbances....Pages 371-374
Evolution of Coronal Active Regions Observed with the Yohkoh Soft X-ray Telescope....Pages 375-378
XUV Doppler Telescope Aboard Sounding Rocket....Pages 379-382
Magnetic Reconnection in the Active Region Inferred by Homologous Soft X-ray Flares in February 1992....Pages 383-390
Back Matter....Pages 391-396
....Pages 397-398