Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: XMM-Newton (cross)-calibration   ESA's large X-ray space observatory XMM-Newton is in its fifth year of
operations. We give a general overview of the status of calibration of the five
X-ray instruments and the Optical Monitor. A main point of interest in the last
year became the cross-calibration between the instruments. A cross-calibration
campaign started at the XMM-Newton Science Operation Centre at the European
Space Astronomy Centre in collaboration with the Instrument Principle
Investigators provides a first systematic comparison of the X-ray instruments
EPIC and RGS for various kind of sources making also an initial assessment in
cross calibration with other X-ray observatories.

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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
2
The categories of this paper are: math
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con