Searching for periodic signals from the galactic gamma-ray sources

Details Searching for periodic signals from the galactic gamma-ray sources Searching for periodic signals from the galactic gamma-ray sources

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...186.0506n&link_type=abstract

American Astronomical Society, 186th AAS Meeting, #05.06; Bulletin of the American Astronomical Society, Vol. 27, p.820

Mathematics

Probability

Scientific paper

We propose a method to search for periodic signals from unidentified galactic gamma-ray sources. This method has been tested in the case of known gamma-ray pulsars. We found that this method can successfully restore the true pulsar period from the EGRET data if the frequency derivative of the pulsar is less than or equal to 10(-13) s(-2) and the signal strength is stronger than 10(-7) photons cm(-2) s(-1) for E > 100 MeV. Especially, this method shows very satisfactory result in the case of Geminga. Furthermore, if the duty cycle of the pulsed signal is small (e.g. 0.1 to 0.2), the method shows higher probability of confirming the sources as periodic one.

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