SIMBAD references

2003ApJ...591..380M - Astrophys. J., 591, 380-387 (2003/July-1)

Detection of pulsed X-ray emission from XMM-Newton observations of PSR J0538+2817.

McGOWAN K.E., KENNEA J.A., ZANE S., CORDOVA F.A., CROPPER M., HO C., SASSEEN T. and VESTRAND W.T.

Abstract (from CDS):

We report on the XMM-Newton observations of the 143 ms pulsar PSR J0538+2817. We present evidence for the first detections of pulsed X-rays from the source at a frequency that is consistent with the predicted radio frequency. The pulse profile is broad and asymmetric, with a pulse fraction of 18%±3%. We find that the spectrum of the source is well-fitted with a blackbody with T=(2.12+0.04–0.03)x106 K and NH=2.5x1021 cm–2. The radius determined from the model fit of 1.68±0.05 km suggests that the emission is from a heated polar cap. A fit to the spectra with an atmospheric model reduces the inferred temperature and, hence, increases the radius of the emitting region; however, the pulsar distance determined from the fit is then smaller than the dispersion distance.

Abstract Copyright:

Journal keyword(s): Stars: Pulsars: Individual: Alphanumeric: PSR J0538+2817 - X-Rays: Stars

Simbad objects: 9

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2019.11.17-07:21:03

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