NuSTARdiscovery of a cyclotron absorption line in the transient X-ray pulsar 2S 1553−542
نویسندگان
چکیده
منابع مشابه
Nustar Discovery of a Cyclotron Line in the Accreting X-ray Pulsar
The high-mass X-ray binary and accreting X-ray pulsar IGR J16393−4643 was observed by NuSTAR in the 3–79 keV energy band for a net exposure time of 50 ks. We present the results of this observation which enabled the discovery of a cyclotron resonant scattering feature with a centroid energy of 29.3+1.1 −1.3 keV. This allowed us to measure the magnetic field strength of the neutron star for the ...
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We report on the first focused hard X-ray view of the absorbed supergiant system IGRJ18027-2016 performed with the NuSTAR observatory. The pulsations are clearly detected with a period of Pspin = 139.866(1) s and a pulse fraction of about 50-60% at energies from 3 to 80 keV. The source demonstrates an approximately constant X-ray luminosity on a time scale of more than dozen years with an avera...
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We present NuSTAR spectral and timing studies of the Supergiant Fast X-ray Transient (SFXT) IGR J17544−2619. The spectrum is well-described by a ∼ 1 keV blackbody and a hard continuum component, as expected from an accreting X-ray pulsar. We detect a cyclotron line at 17 keV, confirming that the compact object in IGR J17544−2619 is indeed a neutron star. This is the first measurement of the mag...
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GS 0834[430, a 12.3 s accretion-powered pulsar, has been observed in seven outbursts with the BATSE large-area detectors on the Compton Gamma Ray Observatory. The Ðrst Ðve outbursts observed by BATSE occurred at intervals of about 107 days, while the Ðnal two outbursts were separated by about 140 days. The photon energy spectrum, measured by Earth occultation in the 20È100 keV band, can be Ðtte...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2016
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stv2849