[vsnet-campaign-nova 944] Re: V2540 Oph - detection of period/s

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

Re: V2540 Oph - detection of period/s

Alon,

> The ~2.5-h period could be the binary orbital period. It would be then in
> the period gap of cataclysmic variables. If other periods are confirmed
> the nova would be an intermediate polar supporting the possible connection
> between the transition phase in novae and intermediate polars. As
> observations of 3 recent novae (V1494 Aql 1999/2, V382 Vel 1999, V1039 Cen
> 2001) are consistent with this prediction, V2540 Oph will be the 4th
> case, so the proposed connection becomes highly significant.

    The transition phase oscillations of novae now seem to be better
understood as a natural consequence of an instability in the super-Eddington
winds.  A good summary just appeared in astro-ph (see below).  Your
interpretation, lacking comparable physics, is only too less appealing.

Paper: astro-ph/0207639
From: Nir J. Shaviv <shaviv@phys.huji.ac.il>
Date: Mon, 29 Jul 2002 22:40:16 GMT   (241kb)

Title: Classical Novae as Super-Eddington Objects
Authors: Nir J. Shaviv (Racah Inst of Physics, Hebrew University, Jerusalem)
Comments: 6 pages, 7 figures, to appear in the proceedings of the International
  Conference on Classical Nova Explosions, Sitges, Spain, 20-24 May 2002
\\
  Several of the inconsistencies plaguing the field of novae are resolved once
we consider novae to be steady state super-Eddington objects. In particular, we
show that the super-Eddington shell burning state is a natural consequence of
the equations of stellar structure, and that the predicted mass loss in the
super-Eddington state agrees with nova observations. We also find that the
transition phase of novae can be naturally explained as "stagnating" winds.
\\ ( http://arXiv.org/abs/astro-ph/0207639 ,  241kb)

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