Results 81 to 90 of about 108,919 (255)
Phase-resolved Deadtime of the Crab Pulsar Using IXPE Data
The Astrophysical JournalAfter receiving an X-ray photon, an X-ray detector is not operational for a duration known as deadtime. It is detector specific and its effect on the data depends upon the luminosity of the source.
M. Vivekanand
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A Spatially Resolved X-Ray Polarization Map of the Vela Pulsar Wind Nebula
The Astrophysical Journal Letters, 2023 In this paper, we present a full spatially resolved polarization map for the Vela pulsar wind nebula (PWN) observed by IXPE. By employing effective background discrimination techniques, our results show a remarkably high degree of local polarization in ...
Kuan Liu +14 more
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Proper Motion of the Crab Pulsar Revisited [PDF]
The Astrophysical Journal, 2006 It has been suggested that the Crab pulsar's proper motion is well aligned with the symmetry axis of the pulsar wind nebula. We have re-visited this question, examining over 6 years of F547M WFPC2 chip 3 images to obtain a best-fit value of $ _\ast = 14.9 \pm 0.8$mas/yr at PA $278\arcdeg \pm 3\arcdeg$.
Ng, CY, Romani, RW
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Pulsar and Magnetar Navigation with Fermi/GBM and GECAM
The Astrophysical Journal Supplement Series, 2023 The determination of the absolute and relative position of a spacecraft is critical for its operation, observations, data analysis, scientific studies, as well as deep-space exploration in general.
Xi-Hong Luo +31 more
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45 years of rotation of the Crab pulsar [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 The 30-Hz rotation rate of the Crab pulsar has been monitored at Jodrell Bank Observatory since 1984 and by other observatories before then. Since 1968, the rotation rate has decreased by about $0.5$\,Hz, interrupted only by sporadic and small spin up events (glitches).
Lyne, A. G. +5 more
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X-ray pulsar in the Crab Nebula [PDF]
Symposium - International Astronomical Union, 1970 Prof. Friedman did not communicate any text or Summary of his communication.
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From Crab Pulsar to Magnetar? [PDF]
Symposium - International Astronomical Union, 2004 We review the evolution of the Crab pulsar's rotational history during the past 35 years. Representing 3.7% of the pulsar's age, it is possible to estimate the likely development of the magnetic field and characteristic age much better than previously.
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X-Ray Observation of the 2017 November Glitch in the Crab Pulsar
Astrophysical Journal, 2018 We have observed a glitch in the Crab pulsar (PSR B0531+21) in the 0.5–10 keV X-ray band with the X-Ray Pulsar Navigation-I (XPNAV-1) satellite. This glitch occurred around 2017 November 8.
Xinyuan Zhang +4 more
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Evolution of Crab Pulsar: Magnetic Inclination Angle and Spin
The Astrophysical JournalThe well-observed Crab pulsar helps one to uncover the underlying knowledge about pulsar evolution. The routine evolution model simultaneously describes the spin-down caused by magnetic dipole radiation and gravitational-wave radiation (GWR), the damping
Cong-Xing Liu, Jian-Min Dong
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On the mystery of the interpulse shift in the Crab pulsar [PDF]
, 2017 A new mechanism of radiation emission in the polar gap of a pulsar is proposed. It is the curvature radiation which is emitted by returning positrons moving toward the surface of the neutron star along field lines of the inclined magnetic field and ...
V. Kontorovich, S. Trofymenko
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