The Recurrent Nova CI AQL

Details The Recurrent Nova CI AQL The Recurrent Nova CI AQL

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..731g&link_type=abstract

Chandra Proposal ID #02308048

Astronomy and Astrophysics

Astronomy

Chandra Proposal Id #02308048

Scientific paper

Recurrent novae (RN) are expected to emit soft x-rays during a short interval after the ejected shell has become optically thin and before the hydrogen shell-burning ceases. Observations of the soft x-rays will test theoretical models and will also test the conjecture that RN are SN Ia progenitors. Unfortunatley, no RN occurred during the ROSAT years, and in fact only one has been detected as a soft X-ray emitter (Kahabka etal 1999). CI Aql went into outburst in Apr. 2000. Hachisu & Kato (2001; astro-ph/0104461) predict that CI Aql should have recently become active at soft X-ray wavelengths and is potentially detectable until Aug. 2001. We propose (1) a 2 ksec ACIS-S observation to verify the existence of soft X-rays, and (2) if soft X-rays are discovered, a 20 ksec LETG-HRC observation to determine crucial parameters (white dwarf mass, effective temperature, composition, luminosity, wind properties).

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