EDP Sciences
Free access
Volume 426, Number 1, October IV 2004
Page(s) 253 - 256
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20040498

A&A 426, 253-256 (2004)
DOI: 10.1051/0004-6361:20040498

Broadband X-ray spectrum of intermediate polar V1223 Sgr

M. Revnivtsev1, 2, A. Lutovinov1, V. Suleimanov3, R. Sunyaev1, 2 and V. Zheleznyakov4

1  Space Research Institute, Russian Academy of Sciences, Profsoyuznaya 84/32, 117810 Moscow, Russia
    e-mail: revnivtsev@hea.iki.rssi.ru
2  Max-Planck-Institute für Astrophysik, Karl-Schwarzschild-Str. 1, 85740 Garching bei München, Germany
3  Kazan State University, Kremlevskaya 18, 420008, Kazan, Russia
4  Institute of Applied Physics, Ulyanova 46, 603950 Nizhny Novgorod, Russia

(Received 22 March 2004 / Accepted 29 June 2004 )

We present the broadband phase averaged spectrum of one of the brightest intermediate polars V1223 Sgr, obtained with INTEGRAL and RXTE observatories (3-100 keV). Good statistical quality of the spectrum in a hard X-ray energy band (INTEGRAL/IBIS and RXTE/HEXTE) allowed us to disentangle contributions of a direct optically thin plasma emission and a reflected component to the spectrum of V1223 Sgr. The obtained measurement of the post-shock temperature of the accreting matter give us the information about the mass of the white dwarf and the inclination of the system.

Key words: stars: binaries: general -- X-rays: binaries -- stars: individual: V1223 Sgr

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