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Tuesday, July 21, 2020 | History

1 edition of Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond found in the catalog.

Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond

by Tetsuya Watanabe

  • 276 Want to read
  • 5 Currently reading

Published by Springer Netherlands in Dordrecht .
Written in English

    Subjects:
  • Nuclear physics,
  • Physics

  • About the Edition

    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.

    Edition Notes

    Other titlesProceedings of the Yohkoh Fifth Anniversary Symposium held in Yoyogi, Tokyo, Japan, November 6-8, 1996
    Statementedited by Tetsuya Watanabe, Takeo Kosugi, Alphonse C. Sterling
    SeriesAstrophysics and Space Science Library -- 229, Astrophysics and Space Science Library -- 229
    ContributionsKosugi, Takeo, Sterling, Alphonse C.
    Classifications
    LC ClassificationsQB460-466
    The Physical Object
    Format[electronic resource] /
    Pagination1 online resource (xiii, 398 p.)
    Number of Pages398
    ID Numbers
    Open LibraryOL27078285M
    ISBN 10940106198X, 9401152209
    ISBN 109789401061988, 9789401152204
    OCLC/WorldCa851391594

      Solar flares are intense, abrupt releases of energy in the solar corona. In the impulsive phase of a flare, the intensity of hard x-ray emission reaches a sharp peak indicating the highest reconnection rate. It is often observed that an x-ray emitting plasma ejecta (plasmoid) is launched before the impulsive phase and accelerated throughout the phase.   1 Department of Astronomy, University of Maryland, College Park, MD 2 Space Applications Corporation, Vienna, VA 3 Institute d'Astrophysique Spatiale, Université Paris XI, Orsay Cedex, France. 4 Hughes SXT Corporation, Lanham, MD 5 Space Science Division, Code , Naval Research Laboratory, Washington, DC 6 ESSolar Physics .

    To this purpose, we need to extract as much information as possible from the Yohkoh/SXT data covering the whole range of the Yohkoh/SXT temperature sensitivity, i.e. ! log T(K)! 8. ( keV) Channel", to appear in the Proceedings of the Yohkoh 5th Anniversary Symposium on OBSERVATIONAL PLASMA ASTROPHYSICS: FIVE YEARS OF YOHKOH AND BEYOND. Reale, F., Betta, R., Peres, G., Serio, S., and McTiernan, J.M. , "Determination of the Length of Coronal Loops from the Decay of X-ray Flares", to appear in Astronomy and.

      Such a difference is an observational constraint for electron acceleration and transport theories in flare models. 1. Introduction {\max}$| is found to be around 5 GHz (e.g., Guidice & Castelli ) or 9 GHz (e.g., Dulk & Dennis ). Observational Plasma Astrophysics: Five Years of YOHKOH and Beyond (Boston: Kluwer), Google Scholar.   The photospheric vector magnetic fields, Hα and soft X-ray images of AR were simultaneously observed with the Solar Flare Telescope at Mitaka and the Soft X-ray Telescope of Yohkoh on Octo , when there was no important activity in this region. Taking the observed photospheric vector magnetic fields as the boundary condition, 3D magnetic fields above the .


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Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond by Tetsuya Watanabe Download PDF EPUB FB2

Since its launch inthe 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 he Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond | SpringerLink Skip to main content Skip to table of contents.

Get this from a library. Observational plasma astrophysics: five years of Yohkoh and beyond. [T Watanabe; Takeo Kosugi; Alphonse C Sterling;]. 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.

Book Review: Observational plasma astrophysics: five years of Yohkoh and beyond / Kluwer,   Tetsuya Watanabe, Takeo Kosugi, and Alphonse C. Sterling (eds.), Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond, Proceedings of the Yohkoh Fifth Anniversary Symposium, Tokyo, 6–8 NovemberKluwer Academic Publishers, Dordrecht,pp., hard cover NLG /US $, £, ISBN 0–––7.

SAO/NASA Astrophysics Data System (ADS) Title: Book Review: Observational plasma astrophysics: five years of Yohkoh and beyond / Kluwer, Journal: The Observatory, vol. no.p. Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond pp | Cite as Computer Simulations of Twisted Flux Tubes and Magnetic Reconnection Authors.

Abstract. We propose a new method to detect superhot (≳30 MK) plasma in solar flares. Our approach is to make use of Yohkoh soft X-ray images in three different filters and to calculate temperature (T H) and emission measure (EM H) of the hotter component assuming a two temperature calculated distributions of T H and EM H are compared with temperatures obtained from the Fe XXV and.

Part of the Astrophysics and Space Science Library book series (ASSL, volume ) Abstract We briefly review the main observational and theoretical results based on Yohkoh data on the site and mechanism of magnetic energy transformation into kinetic and thermal energies of ‘super-hot’ plasma and accelerated particles in solar flares.

Download: observational plasma astrophysics five years of yohkoh and beyond libraryaccess Reviewed by Brigida Nucci For your safety and comfort, read carefully e-Books observational plasma astrophysics five years of yohkoh and beyond libraryaccess61, our library is free for you.

We provide copy of observational plasma astrophysics five years. One of the achievements of YOHKOH has been to provide observational evidence for magnetic reconnection in the solar corona (e.g. Tsuneta et al, ). As well as large scale reconnections which may reconfigure the global field, many theories of coronal heating propose that coronal plasma is heated by a superposition of small localised.

Observational plasma astrophysics: five years of Yohkoh and beyond edited by Tetsuya Watanabe and Takeo Kosugi and Alphonse C.

Sterling (Astrophysics and space science library, v. ) Kluwer Academic Publishers, c adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A.

2 ISAS/Yohkoh, Yoshinodai, Sagamihara-shi, KanagawaJapan. 3 Lockheed Martin Solar and Astrophysics Laboratory, L, b/, Hanover Street, Palo Alto, CA 4 NRC-MSFC Resident Research Associate.

Tetsuya Watanabe, Takeo Kosugi and Alphonse C. Sterling (eds.), Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond, Astrophysics and Space Science Library   Yohkoh/HXT has detected more than solar flares over its 10 years of the first five years of operation HXT has provided us with a lot of new information on solar flares.

Some of its major achievements are providing both statistical and detailed event studies of double footpoint sources, the discovery of the above-the-looptop source as evidence for magnetic reconnection, and. T. Watanabe (Ed.), Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond, Kluwer Academic Publisher, Tokyo (), p.

Prominence eruptions or disappearances observed with an Hα limb filtergraph can be classified into 3 categories, the eruptive prominence, the quasi-eruptive prominence, and the disappearing investigated their mechanism by comparing the results of simultaneous observations by Yohkoh SXT and Hα. We found that soft X-ray features change in both eruptive.

Reviewed by Birthe Brandt For your safety and comfort, read carefully e-Books observational plasma astrophysics five years of yohkoh and beyond librarydoc61, our library is free for you. We provide copy of observational plasma astrophysics five years of yohkoh and beyond librarydoc61 in digital format, so the resources that you find are reliable.

A coronal hard X-ray source observed by Yohkoh during solar flares can be interpreted under assumption that a fast plasma outflow from a reconnecting current sheet creates a shock wave above loops of strong magnetic field.

Since the HXR source is located in the upstream side, rather than in the downstream side of the shock, this provides a new opportunity of particle acceleration — the two. The photon accumulation time to synthesize an image is second for each image.

The field of view is 37" x 37". The contours indicate fixed values through the five images in each energy band. The contour levels are, and. Before completing the merging process, the newborn island exhibits two different phases of rising motion: the first phase with a slower rising speed and the second phase with a faster rising speed.

This is consistent with the Yohkoh observation by Ohyama & Shibata () of X-ray plasma ejecta motion. The first phase, in which reconnection of.Tetsuya Watanabe, Takeo Kosugi, and Alphonse C.

Sterling OBSERVATIONAL PLASMA ASTROPHYSICS FIVE YEARS OF YOHKOH AND BEYOND EDITED Dordrecht London Kluwer Academic c PAPERS We had help with this web page from astronomer Hakeem M. Oluseyi.