The wide band spectrometer on the Solar-A

Yoshimori, M.; Okudaira, K.; Hirasima, Y.; Igarashi, T.; Akasaka, M.; Takai, Y.; Morimoto, K.; Watanabe, Tetsuya; Ohki, K.; Nishimura, Jun; Yamagami, T.; Ogawara, Y.; Kondò, I.

doi:10.1007/bfb0032610

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…Yohkoh is a Japan/US/UK space mission investigating high-energy phenomena in the solar corona. Yohkoh was in operation for more than ten years (September 1991through December 2001, which covered almost an entire solar activity cycle. Yohkoh carried four scientific instruments: Soft X-ray Telescope (SXT), Hard X-ray Telescope (HXT), Bragg Crystal Spectrometer (BCS), and Wide Band Spectrometer (WBS).…”

Section: The Yohkoh Missionmentioning

confidence: 99%

“…Yohkoh carried four scientific instruments: Soft X-ray Telescope (SXT), Hard X-ray Telescope (HXT), Bragg Crystal Spectrometer (BCS), and Wide Band Spectrometer (WBS). Technical details of those instruments are found in the following papers; Tsuneta, et al, 1991, Kosugi, et al, 1991, and Yoshimori, et al, 1991. Yohkoh brought considerable progress in understanding the dynamic aspects of the solar corona by:…”

Section: The Yohkoh Missionmentioning

confidence: 99%

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Resident Archive Services of the Yohkoh Legacy Data Archive

et al. 2009

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The Yohkoh Legacy Data Archive (YLA) is one of the first group of Resident Archives (RAs) selected for funding for NASA's Virtual Observatories for the Heliophysics Data program. YLA provides the best corrected data set of solar X-ray images and spectra from the Yohkoh satellite with a user-friendly web interface. As a RA, we take responsibility to keep our products well maintained and easily accessible. In addition, we have launched the 'E-consultant service', an e-mail based support to individual users regarding data handling to bolster access and use from a wide range of communities.

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Section: The Yohkoh Missionmentioning

confidence: 99%

Section: The Yohkoh Missionmentioning

confidence: 99%

Resident Archive Services of the Yohkoh Legacy Data Archive

et al. 2009

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“…The following brief description of the gamma-ray and hard X-ray spectrometers aboard Yohkoh was taken from Yoshimori et al (1991). The gamma-ray spectrometer consists of two identical BGO (bismuth germanate oxide) scintillation detectors (each is 3" in diameter and 2" in thickness); it covers the energy range of 0.3-10 MeV.…”

Section: Gamma-raymentioning

confidence: 99%

Solar Energetic Particles Studied from Yohkoh Gamma-Ray Observations.

Yoshimori

Morimoto

Suga

et al. 1995

J. geomagn. geoelec

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The Yohkoh spacecraft observed a large flare (Ha importance 3B and GOES (Geosynchronous Operational Environmental Satellite) class X6.1) on 27 October 1991. The flare showed strong gammaray emission above 1 MeV. The gamma-ray spectrum, which extends to 10 MeV/nuc, consists of electron bremsstrahlung continuum and several gamma-ray lines. The gamma-ray observation indicates that electrons and protons were accelerated to >1 MeV and >10 MeV, respectively, during the maximum phase of the flare. Assuming second-order Fermi stochastic acceleration, we derive the Bessel functiontype proton spectrum of aT = 0.029 from a ratio of neutron capture line to nuclear deexcitation line fluences and estimate several parameters describing the acceleration process. In a case of first-order Fermi shock acceleration, the proton spectrum can not be derived from the gamma-my lines. If the shock compression ratio (ratio of upstream to downstream bulk plasma flow velocities) and the spectral characteristic energy are taken to be 1.8 and 100 MeV, respectively, the shock acceleration gives the proton spectrum similar to that obtained from second-order Fermi stochastic acceleration. It is not possible to determine the acceleration mechanism from the gamma-ray lines alone. Moreover, the Yohkoh hard X-ray spectrometer observed 7Be (429 keV) and 7Li (478 keV) lines resulting from 4He+ 4He reactions from two flares on

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X-ray astronomy: energies from 0.1 keV to 100 keV

Culhane

2013

Observing Photons in Space

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The wide band spectrometer on the Solar-A

Cited by 9 publications

References 6 publications

Resident Archive Services of the Yohkoh Legacy Data Archive

Resident Archive Services of the Yohkoh Legacy Data Archive

Solar Energetic Particles Studied from Yohkoh Gamma-Ray Observations.

X-ray astronomy: energies from 0.1 keV to 100 keV

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