Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The joint XMM-Newton and Chandra view of YY Gem   We have observed the flare star YY Gem simultaneously with XMM-Newton and
Chandra as part of a multi-wavelength campaign aiming at a study of variability
related to magnetic activity in this short-period eclipsing binary. Here we
report on the first results from the analysis of the X-ray spectrum. The
vicinity of the star provides high enough S/N in the CCD cameras onboard
XMM-Newton to allow for time-resolved spectroscopy. Since the data are acquired
simultaneously they allow for a cross-calibration check of the performance of
the XMM-Newton RGS and the LETGS on Chandra.

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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
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The categories of this paper are: math
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The categories of this paper are: solv-int
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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: physics
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th