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Data ARchives and Transmission System (DARTS) is a multi-disciplinary space science data archive for, e.g., astrophysics, solar physics, solar-terrestrial physics, lunar and planetary science, and microgravity science. Please read "About DARTS".


News & Announcements

  • The data directory of Ginga has been changed.

    With the ASM data release, the direcotry structure has been changed as follows. (Mar, 2018)
    
    Old directory (URL) :/pub/ginga .. LAC data
    New directory (URL) :/pub/ginga/GINGA-LAC-1.0 .. LAC data
                          /pub/ginga/GINGA-ASM-1.* .. ASM data
    
  • Data release announcement.

    HITOMI data was added to JUDO2. (Feb, 2018)
    Rawdata page and data were added. (Feb, 2018)
    Data was added to Kibo. (Mar, 2018)
    

System Maintenance

(28 Feb. 2018) For service maintenance, the following services become unavailable as follows in a period. We are sorry for your inconvenience.
2018-3-5 10:00 -- 2018-3-5 11:00 (JST)
(service) http://darts.isas.jaxa.jp/iss/kibo

(2 Mar. 2018) For maintenance activities, service becomes unavailable in the following periods. We are sorry for your inconvenience.
2018-3-13 10:00 -- 13:00 (JST)

Old News & Announcements


Recent Topics

Release of the Galactic plane survey data of the [CII] line by BICE (Balloon Infrared Carbon Explorer)

Ionized carbon atom has a fine structure line by a transition of 2P3/22P1/2 at 157.7 microns. It has been found as the strongest far-infrared line, and ubiquitously distributed in the Galaxy. ISAS has made an extensive Galactic plane survey of the line by a liquid helium cooled Fabry Perot spectrometer on board BICE in early 1990's. The survey covered the galactic plane between the galactic longitudes l = −110° ~ +30° and the galactic latitudes b = −4° ~ +4°. The observations had been made almost 30 years ago, but only the northern sky data had been so far analyzed and published. The rest of the data in the southern sky has been analyzed and released as an archival data set, combined with the northern sky data. No other similar data has been present so far, and it would give a useful data to study the physical and chemical conditions in interstellar space as well as the global structure of the Galaxy, as made by the hydrogen line at 21 cm and the CO line at 2.6 mm. (Mar 2018)


Ginga (ASTRO-C) All Sky Monitor (ASM) Data Released

ISAS has been restoring the past satellite data launched by ISAS and stored at Japanese universities. Ginga (ASTRO-C) was launched in 1987, and equipped with the main instrument, Large Area Counter (LAC) and also All Sky Monitor (ASM). The LAC observed specific celestial objects in detail with a small field of view. On the other hand, ASM monitored various objects all over the sky by periodically sweeping the sky with a long and thin field of view. From the end of February 1987, Ginga started daily ASM monitoring for about 20 minutes, while the LAC observation was interrupted. Until the end of operation in autumn 1991, ASM obtained 4.5-year X-ray intensity histories of more than 100 objects. The right upper figure shows the intensity history of the black hole candidate GX 339-4, indicating that the object was sometimes extremely bright and sometimes very faint during the mission period. The right lower figure shows the intensity history of an X-ray nova appeared in January 1991, which was named GS1124-683, meaning that it was discovered by Ginga Satellite at RA=11h24m, Dec=−68.3 deg. The ASM raw data had been stored at Osaka and Rikkyo universities for a long time. The data were converted into the standard FITS format and released from DARTS, through collaboration between Rikkyo University and ISAS. (Jan 2018)


Old Topics

Last Modified: 09 March 2018