Correlated periodicity search

A.B. Koptsevich
Department of Theoretical Astrophysics, Ioffe Physico-Technical Institute, St. Petersburg, Russia
G.G. Pavlov
Department of Astronomy and Astrophysics, Penn State University, U.S.A.

We have developed an approach to search for periodicity that is applicable to the data that consists of several observational sets. This allows to detect periodic signals with smaller pulsed fractions. The approach was tested on ROSAT PSR 0656+14 and PSR 1055-52 data and applied to Chandra G21.5-0.9 data.

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