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An OSSE Search for the Binary Radio Pulsar 1259-63

Ray, P. S. and Grove, J. E. and Kurfess, J.D. and Prince, Thomas A. and Ulmer, M. P. (1993) An OSSE Search for the Binary Radio Pulsar 1259-63. In: Compton X-Ray Observatory. AIP Conference Series. No.280. American Institute of Physics , Woodbury, NY, pp. 249-253. ISBN 1-56396-104-0.

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We have searched data from the Oriented Scintillation Spectrometer Experiment (OSSE) on the Compton Gamma Ray Observatory (GRO) for evidence of low‐energy γ‐ray emission from the binary radio pulsar PSR1259−63. This 47 ms pulsar is in a long‐period, highly eccentric orbit around a Be stellar companion and was observed by OSSE approximately 400 days after periastron. The period derivative allowed by the published radio ephemeris (Johnston et al. 1992) suggests that the pulsar might be relatively young, and therefore a γ‐ray source. However, the ephemeris is not sufficiently accurate to allow the traditional epoch‐folding technique over the full OSSE observation. Instead, the OSSE data were analyzed using Fourier transform spectral techniques after applying trial accelerations to correct for a range of possible orbital accelerations. We searched 48 accelerations; each FFT was 2 ^2^9 points sampled at 2 ms, spanning ∼106 seconds of observation time. There was no evidence of pulsed emission in the 64–150 keV band, with a 99.9% confidence upper limit of 6×10^(−)3 photons cm^(−2) s^(−1) MeV− 1 or ∼40 m Crab pulsars, which suggests that the pulsar’s intrinsic period derivative is small and its magnetic field weak. This work was performed on the Concurrent Supercomputing Consortium’s Intel Touchstone Delta parallel supercomputer as part of a GRO Phase 1 Guest Investigation.

Item Type:Book Section
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Ray, P. S.0000-0002-5297-5278
Prince, Thomas A.0000-0002-8850-3627
Additional Information:© 1993 American Institute of Physics. Published online 05 July 1993.
Group:Space Radiation Laboratory
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1997-34
Series Name:AIP Conference Series
Issue or Number:280
Record Number:CaltechAUTHORS:20141117-102158995
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51834
Deposited By: Deborah Miles
Deposited On:20 Nov 2014 05:07
Last Modified:09 Mar 2020 13:19

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