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Suzaku observation of the classical nova v2491 cyg in quiescence
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mukai, K. Zemko, P. Orio, M. |
| Copyright Year | 2015 |
| Description | We present Suzaku XIS observation of V2491 Cyg (Nova Cyg 2008 No. 2) obtained in quiescence, more than two years after the outburst. The nova was detected as a very luminous source in a wide spectral range from soft to hard X-rays. A very soft blackbody-like component peaking at 0.5 keV indicates that either we observe remaining, localized hydrogen burning on the surface of the white dwarf, or accretion onto a magnetized polar cap. In the second case, V2491 Cyg is a candidate "soft intermediate polar". We obtained the best fit for the X-ray spectra with several components: two of thermal plasma, a blackbody and a complex absorber. The later is typical of intermediate polars. The X-ray light-curve shows a modulation with an approximately 38 min period. The amplitude of this modulation is strongly energy dependent and reaches maximum in the 0.8-2.0 keV range. We discuss the origin of the X-ray emission and pulsations, and the likelihood of the intermediate polar scenario. |
| File Size | 1266580 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150018300 |
| Archival Resource Key | ark:/13960/t9s23050g |
| Language | English |
| Publisher Date | 2015-06-11 |
| Access Restriction | Open |
| Subject Keyword | Cataclysmic Variables: General Aeuro" Nova: Individual (v2491 Cyg) Cygnus Constellation White Dwarf Stars Spaceborne Astronomy Novae Thermal Plasmas Emission X Ray Spectra X Ray Astronomy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
