Resident Archive Services of the Yohkoh Legacy Data Archive

Takeda, Akira; Acton, L. W.; McKenzie, D. E.; Yoshimura, Kazuyuki; Freeland, S.

doi:10.2481/dsj.ss_igy-005

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The online catalogue resides at http://www.astro.uni.wroc.pl/XPE/catalogue.html since 2010 October 22. It is also linked from the Yohkoh Legacy Data Archive 2 (Takeda et al 2009). The general arrangement of the catalogue as a matrix of years and months of observation is presented in Fig.…”

Section: General Contentsmentioning

confidence: 99%

A CATALOG OF SOLAR X-RAY PLASMA EJECTIONS OBSERVED BY THE SOFT X-RAY TELESCOPE ON BOARD YOHKOH

Tomczak

Chmielewska

2012

ApJS

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A catalogue of X-ray Plasma Ejections (XPEs) observed by the Soft X-ray Telescope onboard the YOHKOH satellite has been recently developed in the Astronomical Institute of the University of Wroc law. The catalogue contains records of 368 events observed in years 1991-2001 including movies and crossreferences to associated events like flares and Coronal Mass Ejections (CMEs). 163 XPEs from 368 in the catalogue were not reported until now. A new classification scheme of XPEs is proposed in which morphology, kinematics, and recurrence are considered. The relation between individual subclasses of XPEs and the associated events was investigated. The results confirm that XPEs are strongly inhomogeneous, responding to different processes that occur in the solar corona. A subclass of erupting loop-like XPEs is a promising candidate to be a high-temperature precursor of CMEs.Subject headings: Sun: activity -atmospheric motions -corona -coronal mass ejections (CMEs) -flares -X-rays, gamma rays 2. Ohyama (2009, private communication) with 53 limb events that occurred between

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Section: General Contentsmentioning

confidence: 99%

A CATALOG OF SOLAR X-RAY PLASMA EJECTIONS OBSERVED BY THE SOFT X-RAY TELESCOPE ON BOARD YOHKOH

Tomczak

Chmielewska

2012

ApJS

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“…The solar observations by Yohkoh are archived in their entirety in the Yohkoh Legacy Archive (YLA) website (solar.physics.montana.edu/ylegacy/) and at ISAS/JAXA in Japan (darts.isas.jaxa.jp/solar/ yohkoh/) as well as the Solar Data Analysis Center of NASA Goddard Space Flight Center (umbra.nascom.nasa.gov/yohkoh/y4sdac_top.html). The latter archives provide less reduced data and related information than the YLA, which is described by Takeda et al (2009), Takeda (2015), and Acton (2017). The Yohkoh mission is described in the collection of articles edited by Švestka and Uchida (1991).…”

Section: Introductionmentioning

confidence: 99%

Recalibration of the Soft X-Ray Telescope Onboard Yohkoh

Acton

2018

Sol Phys

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We present a new derivation of the X-ray spectral sensitivity of the Soft X-ray Telescope (SXT) experiment onboard Yohkoh. The recalibration is based upon the hypothesis that, during the first 15 months of the mission, an absorbing material gradually built up on the entrance filters of the telescope. We have also re-evaluated the times and sizes of ruptures of the SXT entrance filters. The impact of this recalibration on derived filter-ratio temperature, emission measure, and calculated spectral irradiance is substantial, especially for SXT data prior to November 1992.

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“…The individual papers are also available on the Yohkoh Legacy Archive (YLA) website (Takeda et al. , 2009; Takeda, 2015). The solar observations by Yohkoh are of continuing scientific importance and have been archived in their entirety in the YLA (http://solar.physics.montana.edu/ylegacy/).…”

Section: Introductionmentioning

confidence: 99%

On-Orbit Performance and Calibration of the Soft X-Ray Telescope on Yohkoh

Acton

2016

Sol Phys

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This paper documents details of the on-orbit performance, data problem solving, and calibration of the Soft X-ray Telescope (SXT) experiment on Yohkoh. This information is important to a full understanding of the strengths and weaknesses of the SXT data set. The paper begins with summaries of SXT calibration issues and how they have been addressed, operational anomalies experienced during the mission, and a brief discussion of the SXT optical train. The following section on the accuracy of Yohkoh pointing determination provides information important for alignment of SXT images with each other and with other solar data. The remainder of the paper gives details of work by the experiment team to understand and ameliorate the many instrument anomalies and changes which impacted the scientific data.

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Resident Archive Services of the Yohkoh Legacy Data Archive

Cited by 5 publications

References 14 publications

A CATALOG OF SOLAR X-RAY PLASMA EJECTIONS OBSERVED BY THE SOFT X-RAY TELESCOPE ON BOARD YOHKOH

A CATALOG OF SOLAR X-RAY PLASMA EJECTIONS OBSERVED BY THE SOFT X-RAY TELESCOPE ON BOARD YOHKOH

Recalibration of the Soft X-Ray Telescope Onboard Yohkoh

On-Orbit Performance and Calibration of the Soft X-Ray Telescope on Yohkoh

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