ChandraObservations of the Anomalous X‐Ray Pulsar 4U 0142+61 | Zendy

S. Patel | Zendy; C. Kouveliotou | Zendy; Peter Woods | Zendy; Allyn F. Tennant | Zendy; Martin C. Weisskopf | Zendy; Mark H. Finger | Zendy; C. A. Wilson | Zendy; E. Göğüş | Zendy; M. van der Klis | Zendy; T. Belloni | Zendy

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ChandraObservations of the Anomalous X‐Ray Pulsar 4U 0142+61

Author(s) -

S. Patel,

C. Kouveliotou,

Peter Woods,

Allyn F. Tennant,

Martin C. Weisskopf,

Mark H. Finger,

C. A. Wilson,

E. Göğüş,

M. van der Klis,

T. Belloni

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/368072

Subject(s) - pulsar , physics , astrophysics , black body radiation , observatory , spectroscopy , neutron star , x ray , phase (matter) , x ray pulsar , scattering , astronomy , radiation , optics , quantum mechanics

We present X-ray imaging, timing, and phase resolved spectroscopy of theanomalous X-ray pulsar 4U 0142+61 using the Chandra X-ray Observatory. Thespectrum is well described by a power law plus blackbody model with power lawindex = 3.35(2), kT_BB=0.458(3) keV, and N_H=0.91(2) x 10^{22} cm^{-2}$; wefind no significant evidence for spectral features (0.5-7.0 keV). Time resolvedX-ray spectroscopy shows evidence for evolution in phase in either index, orKT_BB, or some combination thereof as a function of pulse phase. We derive aprecise X-ray position for the source and determine its spin period,P=8.68866(30) s. We have detected emission beyond 4 arcsec from the centralsource and extending beyond 100 arcsec, likely due to dust scattering in theinterstellar medium.Comment: 15 pages, accepted for publication in Ap

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