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Mission Update - 2006 April
First scientific results from Suzaku are just around the corner!
The premature end of
XRS was a huge shock to everybody involved in the mission.
Both NASA and JAXA convened panels of experts to identify what
went wrong. After the hard work by the team members and outside
experts alike, we know the specific problem that caused the rapid
loss of helium - we plan to write it up for the Learning Center
when the official report is released. It is a problem that is easy
to correct in a future mission. The panels spent more time figuring
out how this problem might have been spotted and corrected by the
Suzaku team, and what future missions should do to avoid
a similar problem. The key recommendation is better communication among
the different subgroups within the team - between the spacecraft people
and the instrument teams, and between the US members and the Japanese members.
One consequence of the loss is that the entire observing program
for Suzaku had to be reviewed and revised. The original
program was optimized for observations with XRS - so we replaced the
original program with a new set of observations, both by the team
members and by the outside "Guest Observers"
(GOs). The team members had the exclusive right to observations
through 2006 March, and observing times after 2006 April are awarded
through open competition.
The team members have been looking at the mountain of data collected
so far. With a mission like Suzaku, it takes time to understand
and characterize how the instruments actually work in space. Such
understanding has to be reflected in the software used to analyze the
data. Often you see something unexpected, but until you know the
properties of the instruments you are using, you can't be sure if
it's really a new discovery about the object you are studying.
The team has been analyzing observations specifically designed to
characterize the instruments, and looking at a wide range of
other observations. We now have good enough understanding of
the instruments, and are beginning to apply this knowledge to
all the observations. We are ready to start doing science!
In fact, the first ever paper based on Suzaku observations
has just been submitted to Astrophysical Journal. More
will follow over the next few months. We'll start putting such
results on the Suzaku Learning Center soon!
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