Phase-resolved gamma-ray spectroscopy of the Crab pulsar observed by POLAR
نویسندگان
چکیده
منابع مشابه
Fine phase resolved spectroscopy of the X-ray emission of the Crab pulsar (PSR B0531+21) observed with BeppoSAX
The Crab Nebula and the Pulsar have been pointed several times by the BeppoSAX satellite. We analysed all these observations, summed together, to study the main spectral properties with a good phase resolution. A new accurate estimate of the hydrogen column density in the Crab direction NH=3.23×10 cm−2 is given as derived from the analysis of the off-pulse emission at low energies. We studied t...
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We present the first phase-resolved study of the X-ray spectral properties of the Crab Pulsar that covers all pulse phases. The superb angular resolution of the Chandra X-ray Observatory enables distinguishing the pulsar from the surrounding nebulosity, even at pulse minimum. Analysis of the pulse-averaged spectrum measures interstellar X-ray extinction due primarily to photoelectric absorption...
متن کاملSpectroscopy of the Crab Pulsar
We present new, high signal-to-noise spectroscopy of the Crab Pulsar in the range λλ5000−7000 Å. The observations were carried out with the 6-meter telescope of the SAO with the spectrograph SP-124 with a resolution of 2 Å. After reduction of the Crab Nebula emission, the dereddened pulsar spectrum can be fitted by a power law with α = −0.15± 0.15. There are no lines (emission and absorption) w...
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We present a refined, phase-connected, postglitch ephemeris for the Geminga pulsar that is a good fit to all the postglitch data from EGRET, ASCA, and XMM-Newton. We also present the results of phase-resolved spectroscopy of two XMM-NewtonX-ray observations of the Geminga pulsar obtained in 2002 and 2004. An investigation is made into a previously claimed existence of a small hot spot on the ne...
متن کاملPhase - resolved X - ray spectroscopy of the millisecond pulsar SAX J 1808 . 4 – 3658
We present new results based on RXTE observations of the millisecond pulsar SAX J1808.4–3658 carried out during the decay of the April 1998 outburst. The X-ray spectrum can be fitted by a two-component model. We interpret the soft component as blackbody emission from a heated spot on the neutron star, and the hard component as coming from Comptonization in plasma heated by the accretion shock a...
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ژورنال
عنوان ژورنال: Journal of High Energy Astrophysics
سال: 2019
ISSN: 2214-4048
DOI: 10.1016/j.jheap.2019.10.001