Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prediction of Supersoft X-ray Phase during the 2006 Outburst of RS
  Ophiuchi   RS Ophiuchi is one of the well-observed recurrent novae and also a candidate
progenitor of Type Ia supernovae. Its sixth recorded outburst was discovered on
12 February 2006. Detection of a supersoft X-ray phase will provide a firm
confirmation of hydrogen shell-burning on the white dwarf and its
turn-on/turn-off dates strongly constrain a mass range of the white dwarf,
which clarify whether or not RS Oph becomes a Type Ia supernova. For a timely
detection of its supersoft X-ray phase, we have calculated outburst evolution
of RS Oph based on the optically thick wind theory and predicted a supersoft
X-ray phase for the 2006 outburst: it will most probably start on day 80-90 and
continue until day 110-120 after the optical maximum. Its duration is so short
as only a month or so. We strongly recommend multiple observations during
April, May, and June of 2006 to detect turn-on and turn-off times of the
supersoft X-ray phase.

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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph