Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...518l.111b&link_type=abstract
The Astrophysical Journal, Volume 518, Issue 2, pp. L111-L114.
Astronomy and Astrophysics
Astronomy
12
Stars: Binaries: Close, Stars: Novae, Cataclysmic Variables, Radiation Mechanisms: Thermal, Stars: Individual: Constellation Name: Gk Persei, X-Rays: Stars
Scientific paper
We present the ROSAT High-Resolution Imager data of the first resolved and detected classical nova shell in the X-ray wavelengths: the shell of Nova Persei 1901. We find that the X-ray nebula is composed of knots/clumps and has an elliptical shape with a total count rate of about 0.01+/-0.001 counts s^-1. We estimate that the spectrum is of thermal origin with a luminosity of ~8.0x10^31 ergs s^-1 and an X-ray temperature of ~2.0x10^6 K in the 0.1-2.4 keV energy range. The knots/clumps are a result of fragmentation and condensation in the postshock region. The estimated electron density in the knots/clumps is about 10.0 cm^-3<=n_e<=70.0 cm^-3. We suggest that the detected X-ray nebula could also be the reverse shock zone. This detection sheds light into one of the most poorly understood stages of the classical nova evolution.
Balman Solen
Ogelman Hakki B.
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