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- W1962677900 abstract "The spectra of only a few pulsars are known in the low-energy gamma-ray region around 1 Mev. We searched for point sources of gamma-radiation in the 0.3-1 and 1-8 Mev bandpasses at the location of known radio and X-ray pulsars. Single channel photometry using the SPI spectrometer on INTEGRAL, obtained using a coded-aperture mask, is feasible if calibrated using known fluxes from point sources. The calibration was carried out using the Crab nebula and verified using the Vela pulsar. The locations of a representative sample of pulsar types were then observed. Other than the Crab and Vela pulsars, no sources were detected. Upper limits are given on the time-averaged flux from the location of 15 other pulsars; most lie below previously published upper limits. Six of the pulsars for which we determine upper limits at 1 MeV have been detected above 100 MeV by FERMI. The upper limits we report here help to describe the spectrum of these pulsars at all wavelengths." @default.
- W1962677900 created "2016-06-24" @default.
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- W1962677900 date "2011-04-19" @default.
- W1962677900 modified "2023-09-27" @default.
- W1962677900 title "A Search for Pulsars between 0.3 and 8 MeV using INTEGRAL" @default.
- W1962677900 hasPublicationYear "2011" @default.
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