There will be a network outage, Wednesday May 2, 2018 from 19:00 EDT - 23:59 EDT. All services, web sites, and systems that require access to the internet will be affected by this work.
Corsa-B was the first X-ray astronomy Japanese
satellite. Launched on 21 February 1979, it was renamed Hakucho
(Japanese for swan) symbolizing one of the most interesting X-ray
objects, Cyg X-1.
As many other X-ray satellite launched in that period, Hakucho was
designed to study and monitor transient phenomena with particular
emphasis on X-ray bursts. It was still operating when the second
X-ray Japanese satellite Tenma launched in 1983.
Mission Characteristics
Lifetime : 21
February 1979 - 16 Aprile 1985 Energy Range :
0.1 - 100 keV Payload :
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
Two offset FOV = 50.3° X 1.7° FWHM
eff area =32 cm2 each
Hard X-ray (HDX) 10-100 keV scintillator
FOV 4.4° X 10.0° FWHM eff area =45 cm2
Science Highlights:
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.
There will be a network outage, Wednesday May 2, 2018 from 19:00 EDT - 23:59 EDT. All services, web sites, and systems that require access to the internet will be affected by this work.