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The AVO and pulsar astronomy
Dataformat
While most of the data to be stored in the AVO archive will be
represent an image in the form of some data cube, there are a
number of sources, in particular pulsars, where this data format
is not necessarily applicable but where the data exist in form
of time series. It need to be ensured that all tools are capable
of dealing with such time series data, and in particular, tools
should be able to track time stamps and provide means of time
series analysis.
Data and software handling
In developing the software by multi-institutional and multi-national
researchers, a structure has to be in place which allows the manipulation
and modification of software with full revision control and interface
definition. On a much smaller scale as needed, but perhaps a example
to study, is the international collaboration of the Parkes Multibeam
Survey for pulsars involving scientists from the UK, Italy, Australia,
Canada and the US. There survey generated more than 5 TB of data which
are currently reanalysed using a beowulf cluster. The used software
is under revision control a various repositories: data analysis software
(Jodrell Bank, UK), survey database (ATNF, Syndey), catalouge (Swinburne,
Australia). The success of this survey and the adopted methods is
highlighted by the fact that the survey has found nearly 50% of all
known pulsars.
Data mining
Pulsar emit across the whole electromagnetic spectrum and much can
be learnt from comparing the emission properties, for instance, at
the radio and gamma-rays. A search for possible counterparts needs
the cross-correlation of various catalougs, like an on-line pulsar
data base with the 3EG catalouge of gamma ray point sources, the
ROSAT archive or the list of known supernova remnants. It needs to be
ensured all various catalougs can be cross-correlated easily with
direct access to the stored data in form of images, time series and
other source information.
Michael Kramer, Jodrell Bank Observatory mk@jb.man.ac.uk
(topic created by MarcoLeoni 24.05.2012@03:53:46)
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