Del i serien Astrophysics and Space Science Library

Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond

Inbunden, Engelska, 1998

AvTetsuya Watanabe,Takeo Kosugi,Alphonse C. Sterling

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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 text 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,there are 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.

Produktinformation

Utgivningsdatum1998-03-31
Mått155 x 235 x 24 mm
Vikt757 g
FormatInbunden
SpråkEngelska
SerieAstrophysics and Space Science Library
Antal sidor398
Upplaga1998
FörlagKluwer Academic Publishers
ISBN9780792349853

Tillhör följande kategorier

I. Basic Properties of Cosmic Plasmas.- Evolution of the Solar Corona from the Maximum to the Minimum.- Density, Temperature and Magnetic Field Structure of High Latitude Corona.- Studies of Coronal Temperature.- The Behavior of Coronal Holes.- Deep Survey of Solar Nano-Flares with Yohkoh.- The Sun as an X-Ray Star: Overview of the Method.- Coronal Heating due to Twisting Faculae of 1 km Radii.- Comparison between Statistical Features of X-ray Fluctuations from the Solar Corona and Accretion Disks.- From the Sun to the Galaxy Clusters.- High Energy Emission from Blazars — ASCA Observation of Blazars and Multiband Analysis —.- II. Origin of Cosmic Plasma Dynamics.- Magnetic Reconnection and Dynamos in Laboratory Plasmas.- A Mechanism Driving Solar Flares.- On the Origin of Helicity in Active Region Magnetic Fields.- SXR Coronal Polar Jets and Recurrent Flashes.- The Filament Disappearance of May 7, 1992.- An Interdisciplinary Study of the Eruptive Prominence of 28 August 1992.- Yohkoh Observations of Superhot Plasma in Solar Flares.- Non-thermal Velocities Observed by Yohkoh.- Magnetohydrodynamics of Accretion Disks.- Magnetic Loops in the Hot Universe.- III. Magnetic Reconnection as an Engine of Cosmic Explosions.- Computer Simulations of Twisted Flux Tubes and Magnetic Reconnection.- Magnetic Reconnection and Flares in Star Forming Regions: Flares in Protostars.- Magnetically Driven Jets from Accretion Disks.- Numerical Simulation of Relativistic Jet Formation in Black Hole Magnetosphere.- Pair Production Cascade in a Black Hole Magnetosphere.- MHD Simulations of Magnetic Reconnection in the Solar Corona and Flares.- Several Problems with Classical “Reclosing of Opened-up Simple Arcade” Models for Arcade Flares and Arcade Formation Events.- Plasmoid Formationin Eruptive Flares.- Plasma Motion in Solar Flares Observed by the Radio-heliograph.- Current Sheet Formation and Reconnection on Separator Field Lines.- Bifurcation-Transition Dynamics in Solar Coronal Plasma.- A Unified Model of Solar Flares.- Activity Caused by Interacting Loops and Evolution of Magnetic Field.- Loop-loop Interaction in Impulsive Solar Flares Inferred from Microwave and X-Ray Images.- Horseshoe Shaped Ha Solar Flares on 13 Oct 1995 and Emerging Flux Model of Flares.- SoHO — Yohkoh Science Collaboration.- The Coronal Diagnostic Spectrometer on SoHO.- NOAA 7978: the Last Best Old-Cycle Region.- S XV Spectral Properties of an Active Region from the Yohkoh Bragg Crystal Spectrometer.- The Relationship between UV and X-Ray Brightenings.- Joint Observations and an Active Region with SoHO and Yohkoh.- IV. High-Energy Particle Acceleration in Cosmic Plasmas.- Summary of Coronal Hard X-Ray Sources Observed with Yohkoh/HXT.- Hard X-Ray Emission from a Mirror Trap at the Top of Reconnecting Loops.- Energy Release and Particle Acceleration in Solar Flares with Respect to Flaring Magnetic Loops.- What did Yohkoh and COMPTON Change in Our Perception of Particle Acceleration in Solar Flares?.- Microwave and Hard X-ray Observations of an X-Class Limb Flare.- Magnetic Reconnection and Particle Acceleration in Solar Flares.- Activity in NOAA AR 7172.- Acceleration of Particles in Collisionless Magnetic Reconnection.- The Formation and Evolution of the Coronal Holes Associated with NOAA Region 7978.- Horizontal Flow Field in the Solar Photosphere.- Local Three-Dimensional MHD Simulations of the Parker Instability in Differentially Rotating Disks.- Limits on the Temperature of Impulsive Phase Solar Flare Hard X-Ray Emission, and the Amount of Thermal X-Rays Presentin the Yohkoh HXT-LO (14 – 24 keV) Channel.- Homologous Flare Series of February 1992.- Simulation Study on Magneto-Gravity Instabilities in Magnetic Shear Field.- X-ray Plasma Ejections and Jets From Solar Compact Flares Observed with the Yohkoh Soft X-Ray Telescope.- Nonthermal Effects in Fe XXV Spectra Observed by Yohkoh/BCS.- Using the Yohkoh BCS to Check Element Abundances and Ionization Fractions.- Maximum Energy of Force-Free Magnetic Fields.- A Study of Preflare X-ray Brightenings.- Non-Linear Evolution of Erupting Coronal Magnetic Fields.- Study of Solar X-Ray Jets Observed by Yohkoh Soft X-Ray Telescope.- Deconvolution of Yohkoh Soft X-ray Images.- Post-Flare Structures Rising with Decreasing or Constant Speed.- Soft X-ray Features of Prominence Eruption and Disappearance.- Yohkoh Observations and Interplanetary Disturbances.- Evolution of Coronal Active Regions Observed with the Yohkoh Soft X-Ray Telescope.- XUV Doppler Telescope aboard Sounding Rocket.- Magnetic Shear and Soft X-Ray Flares in a Delta Sunspot Region (NOAA 7070) in February 1992.- List of Participants.