A Photometric Study of Two-Pole Accretion Polar RX J1846.9+5538

Details A Photometric Study of Two-Pole Accretion Polar RX J1846.9+5538 A Photometric Study of Two-Pole Accretion Polar RX J1846.9+5538

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006yosc.conf...38g&link_type=abstract

13th Young Scientists' Conference on Astronomy and Space Physics, held in Kyiv, Ukraine, April 25-29, 2006, Eds.: Golovin, A.; I

Physics

Space Physics

Scientific paper

We present the results obtained from R-band photometric CCD observations of two-pole accretion polar RX J1846.9+5538 (hereafter RX J1846) made during 36 nights between May and August 2005. Observations were carried out with the help of 38-cm Cassegrain telescope of Crimean Astrophysical Observatory (Ukraine) and with 2-meter telescope Zeiss-2000 of Terskol Observatory (Russia). We found periods of P_1=128.70288m (that could be interpreted as the orbital period) and possibly P_2=1889s in the data (amplitude of variability with P_2 is not constant, but ussualy exceed 3 sigma level, considering sigmaerror to be 0.^m09). The double-humped orbital lightcurve might indicate that system was in two-pole accretion mode during our observations. Also we note that accretion on the second pole is lower compared to the primary one. Remarkable that dip is present during the primary maxima, very likely caused by absorption in one of the accretion streams. The definition of dip-event for RX J1846 is given. Also the results of the O-C analysis of both maximuma are reported. The further photometric and spectroscopic observations are of great interest.

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