Physics – Space Physics
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006yosc.conf..115t&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
3
Scientific paper
We present the results of broad band (3-100 keV) observa- tions of X-ray pulsars with the INTEGRAL and RXTE observatories. We concentrate on the luminosity and energy dependence of the pulse profile and the variations of the cyclotron line energy. In V0332+53 the line energy varies nearly linearly with the source luminosity, while in 4U0115+63 its behavior is more complicated. Strong variations of the pulse profile with the energy and source intensity were found for both of pulsars; in V0332+53 the changes of the pulse profile near the cyclotron line are especially drastic. Results and possible emission mechanisms are brie y discussed in terms of theoretical models of accreting pulsars.
Churazov Eugene
Lutovinov Alexander A.
Sunyaev Rachid
Tsygankov Sergei S.
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