Mass Supply and Flows in the Solar Corona: The 2nd Soho Workshop

ISBN-13: 9789401044011 / Angielski / Miękka / 2012 / 402 str.

Bernhard Fleck;G. Noci;Giannina Poletto

Opis

nd The 2 SORO Workshop on "Mass Supply and Flows in the Solar Corona" was held in Marciana Mariana on the island of Elba, Italy, in the week September 27 to October 1, 1993, as part of a series of workshops planned by the Solar Corona and Particles Working Group of the SOHO Science Working Team (SWT). The purpose of this workshop series is to acquaint the solar community with the capabilities of SORO, and prepare scientific projects and observing plans for the mission. This Workshop, which was at tended by more than one hundred scientists from different countries, focused on the following topics: 1) Fine Scale Structures 2) Loops and Prominences 3) Coronal Streamers 4) Coronal Roles and Solar Wind Each of these four topics was introduced by an observational and a theo retical overview highlighting the most recent advances in their area. A third review illustrated how SORO might help in solving open problems. Oral pa pers and poster presentations were followed by Working Group sessions. On the last day of the Workshop the Group Leaders reported on the activities of their Working Group. These proceedings include most of the papers presented at the Work shop, including the poster papers and Working Group reports by the Group Leaders as well as two overview papers of the SORO mission. All papers have been refereed."

Spis treści

List of Participants.- Foreword.- Soho Overview.- SOHO and the Solar Community.- The Scientific Payload of the Space-Based Solar and Heliospheric Observatory (SOHO).- SOHO Operations and Ground System.- I Small Scale Structures.- Solar Mass Row in Fine-Scale Structures.- Magnetic Fine Structures in Coronal Loops.- Small Scale Structures in the Solar Corona.- The Dynamics of Chromospheric Spicules.- Numerical Simulations of Spicule Driving Mechanisms.- The Chromospheric Network Dynamics as Derived from the Analysis of Ca II K and He I 1083 nm Lines.- Dynamical Fine Structures of the Chromosphere.- Energy Input for Explosive Events in the Transition Zone.- Jets and Brightenings Generated by Energy Deposition in the Middle and Upper Solar Chromosphere.- The Coronal Context of Transition Region Explosive Events.- The Extension of Explosive Events from the Transition Region to the Corona.- Fine Structure and the Emission Filling Factor.- Turbulent Transition in Solar Surges.- Observed Redshifts of Transition Region/Corona Lines.- Transition Region Line-Shifts in the Rebound Shock Spicule Model.- Analysis of a Redshifted Plasma Flow over a Sunspot.- Spectroscopic Diagnostics for CDS and SUMER.- SUMER Science Database.- TRACE-The Transition Region and Coronal Explorer.- Working Group 1: Small Scale Features.- II Loops and Prominences.- Observations of Loops and Prominences.- Mass Flows in Coronal Loops.- SOHO Contribution to the Understanding of Mass Supply and Flows in the Solar Corona.- Features of Mass Supply and Flows Related with Reconnection in the Solar Corona.- Coronal Heating due to the Emergence of Magnetic Flux.- Modeling of Dynamic Evolution of Coronal Loops.- Hierarchy of Spatial Scales in UV Prominences.- Coordinated Optical and Yohkoh Observations of 26 June 1992 Flare Loops.- Coronal Electron Density Measurements Using the Near-IR [Fe XIII] Emission Lines.- Structure and Development of Quiet Loops in the Solar Corona.- Coronal Loops and Prominences as Observed with RATAN 600.- Millimeter Wave Radiation Sources Visible in Solar Corona.- Stationary Flows in Coronal Loops.- Observational Evidence for Non-Equilibrium Ionization in the Solar Corona.- ASAP: A Systematic Approach to Plasma Spectral Synthesis.- Eruptive Prominences as Sources of Magnetic Clouds in the Solar Wind.- Working Group 2: Loops and Prominences.- III Coronal Streamers.- Coronal Streamers’ Theories.- Understanding Solar Streamers: The Role of SOHO.- Ultraviolet Spectroscopy of the Extended Solar Corona during the SPARTAN 201 Mission.- Preliminary Results from SPARTAN 201: Coronal Streamer Observations.- SPARTAN 201 White Light Coronagraph Experiment.- Soft X-Ray Observations of Helmet Structures from SXT/Yohkoh.- Radio Emission from Coronal Streamers.- Magnetic Configuration of Coronal Streamers and Threads.- Modeling Coronal Streamers and Their Eruption.- Magnetohydrodynamic Simulation of a Streamer Beside a Realistic Coronal Hole.- Manifestation of Magnetic Reconnection in Coronal Streamer Current Sheets.- Coronal Magnetic Field Evolution under Reconnective Relaxation.- Working Group 3: Coronal Streamers.- IV Coronal Holes and Solar Wind.- Observations of the Solar Wind from Coronal Holes.- Unsolved Problems of Solar Wind Expansion: Can We Learn Anything from SOHO?.- Diffusive Fractionation in the Chromosphere.- Coupling of the Coronal He Abundance to the Solar Wind.- Electron Coronal Density Irregularity $$ {{\overline {{\rm}^{\rm} } } \mathord{\left/ {\vphantom {{\overline {{\rm}^{\rm} } } {\left( {\overline {\rm} } \right)^{\rm} }}} \right. \kern-\nulldelimiterspace} {\left( {\overline {\rm} } \right)^{\rm} }} $$ from Measurements of K-Coronal and Lyman Lines Brightnesses.- Simulated Observations of the Electron Coronal Density Irregularity $${{\overline {{\rm}^{\rm} } } \mathord{\left/ {\vphantom {{\overline {{\rm}^{\rm} } } {\left( {\overline {\rm} } \right)^{\rm} }}} \right. \kern-\nulldelimiterspace} {\left( {\overline {\rm} } \right)^{\rm} }}$$.- UV Spectral Lines from Coronal Transients.- Modeling the Coronal Magnetic Field in a Polar Hole.- Broadening of Fe X (6374 Å) Profiles above the Limb in a Coronal Hole.- Signature of Coronal Holes and Streamers in the Interplanetary Space.- Effect of Areal Expansion and Coronal Heating on the Solar Wind.- Coronal Plumes and Final Scale Structure in High Speed Solar Wind Streams.- Radial Profile Measurements of the Solar Wind Speed Using Radio Sounding Techniques.