[ITAL]Chandra[/ITAL] Observations of the Recurrent Nova CI Aquilae after Its 2000 April Outburst | Zendy

J. Greiner | Zendy; R. Di Stefano | Zendy

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[ITAL]Chandra[/ITAL] Observations of the Recurrent Nova CI Aquilae after Its 2000 April Outburst

Author(s) -

J. Greiner,

R. Di Stefano

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/344565

Subject(s) - physics , astrophysics , nova (rocket) , emission spectrum , ionization , intensity (physics) , astronomy , spectral line , optics , ion , aeronautics , quantum mechanics , engineering

We report the results of two Chandra observations of the recurrent nova CIAql at 14 and 16 months after its outburst in April 2000, respectively. TheX-ray emission is faint in both cases, without any noticeable change inspectrum or intensity. Although the emission is very soft, it is not luminousenough to be due to late-time H-burning. This implies that the luminoussupersoft phase ended even before the time predicted by the most recentcalculations. The details of the X-ray spectrum, together with the fact thatthe observed X-ray intensity is brighter than pre-outburst (1992/1993), suggestthat the observed X-ray emission is either due to ionization of thecircumstellar material or due to the shocks within the wind and/or with thesurrounding medium.Comment: 10 pages ApJ style with 5 figures; accepted for publication in Ap

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