Discovery of soft X-ray pulsations from the γ-ray source Geminga
نویسندگان
چکیده
منابع مشابه
Discovery of X-ray Pulsations from the next Geminga, Psr J1836+5925
We report recent XMM-Newton investigations of PSR J1836+5925, the “next Geminga,” which determined an X-ray pulsation of ∼173.3 ms. Its X-ray periodicity is consistent with the γ -ray ephemeris at the same epoch. The X-ray folded light curve has a sinusoidal structure that is different from the double-peaked γ -ray pulse profile. We have also analyzed the X-ray phase-averaged spectra which show...
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There are several supernova remnants which contain unresolved X-ray sources close to their centers, presumably radio-quiet neutron stars. To prove that these objects are indeed neutron stars, to understand the origin of their X-ray radiation, and to explain why they are radio-quiet, one should know their periods and period derivatives. We searched for pulsations of the X-ray flux from the radio...
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We discovered an X–ray periodicity at ∼ 8.7 s from the direction of the two sources 4U 0142+61 and RX J0146.9+6121. The pulsations are visible only in the 1–4 keV range, during an observation obtained with EXOSAT in August 1984. In the same data, periodic oscillations at 25 minutes had been previously found in an additional hard spectral component above 4 keV. The newly discovered periodicity m...
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ژورنال
عنوان ژورنال: Nature
سال: 1992
ISSN: 0028-0836,1476-4687
DOI: 10.1038/357222a0