The Hakucho [CORSA-B] Satellite
![image of Hakucho](https://webarchive.library.unt.edu/eot2008/20090511201823im_/http://heasarc.gsfc.nasa.gov/Images/hakucho/hakucho_small.gif)
Mission Characteristics
![*](https://webarchive.library.unt.edu/eot2008/20090511201823im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
![*](https://webarchive.library.unt.edu/eot2008/20090511201823im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
![*](https://webarchive.library.unt.edu/eot2008/20090511201823im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
- Very Soft X-ray (VSX) experiment 0.1-0.2 keV
Four units of proportional counters
each with eff area ~ 78 cm2
Two parallel to the spin axis FOV = 6.3° X 2.9° FWHM
two offset FOV = 24.9° X 2.9° FWHM
- Soft X-ray (SFX) 1.5-30 keV
Six units of proportinal counters
Parallel to the spin axis :- Two FOV 17.6 deg FWHM; eff area=69 cm2 each
- Two FOV 5.8 deg FWHM; eff area=40&83 cm2
- Hard X-ray (HDX) 10-100 keV scintillator
FOV 4.4° X 10.0° FWHM eff area =45 cm2
![*](https://webarchive.library.unt.edu/eot2008/20090511201823im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
- Discovery of soft X-ray transient Cen X-4 and Apl X-1
- Discovery of many burst sources
- Long-term monitoring of X-ray pulsar (e.g. Vela X-1)
- Discovery of 2 Hz variability in the Rapid Burster later named Quasi Period Oscillation.
![*](https://webarchive.library.unt.edu/eot2008/20090511201823im_/http://heasarc.gsfc.nasa.gov/Images/heasarc/icons/orangeball.gif)
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Last modified: Thursday, 26-Jun-2003 13:48:54 EDT