SIMBAD references

2018ApJ...868L...8A - Astrophys. J., 868, L8-L8 (2018/November-3)

Signatures of intra-binary shock emission in the black widow pulsar binary PSR J2241-5236.


Abstract (from CDS):

We report on high-energy properties of the black widow pulsar PSR J2241-5236 in the X-ray and the Fermi-Large Area Telescope (LAT; GeV gamma-ray) bands. In the LAT band, the phase-averaged gamma-ray light curve shows orbital modulation below ∼1 GeV with a chance probability (p) monotonically decreasing with time to p ∼ 10–5. The peak of the light curve is near the superior conjunction of the pulsar (binary phase phB ≃ 0.25). We attribute the modulation to the intra-binary shock (IBS) emission and search for IBS signatures in the archival X-ray data. We find that the X-ray spectral fit requires a nonthermal component, which implies a possible IBS origin of the X-rays. We discuss our observations in the context of IBS scenarios.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: close - gamma rays: stars - stars: individual: PSR J2241-5236 - X-rays: binaries

Status at CDS:  

Simbad objects: 9

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