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- W1649088002 abstract "We report on the likely detection of pulsed high-energy gamma-rays from the binary millisecond pulsar PSR J0218+4232 in 100-1000 MeV data from CGRO EGRET. Imaging analysis demonstrates that the highly significant gamma-ray source 2EG J0220+4228 (~10 sigma) is for energies > 100 MeV positionally consistent with both PSR J0218+4232 and the BL Lac 3C66A. However, above 1 GeV 3C66A is the evident counterpart, whereas between 100 and 300 MeV PSR J0218+4232 is the most likely one. Timing analysis using one ephemeris valid for all EGRET observations yields in the 100-1000 MeV range a double-pulse profile at a ~3.5 sigma significance level. The phase separation is similar to the component separation of ~0.47 observed at X-rays. A comparison of the gamma-ray profile with the 610 MHz radio profile in absolute phase shows that the two gamma- ray pulses coincide with two of the three emission features in the complex radio profile." @default.
- W1649088002 created "2016-06-24" @default.
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- W1649088002 date "1999-11-15" @default.
- W1649088002 modified "2023-09-26" @default.
- W1649088002 title "Likely detection of pulsed high-energy gamma-rays from millisecond pulsar PSR J0218+4232" @default.
- W1649088002 doi "https://doi.org/10.48550/arxiv.astro-ph/9911268" @default.
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