Results 51 to 60 of about 1,910,738 (272)

Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data

open access: yesUniverse, 2022
Solar system ephemeris is very important for pulsar timing and navigation. In order to explore the effect of different precision ephemerides on X-ray pulsar timing and navigation, the differences between timing and navigation results with four JPL ...
Yongtao Deng, Shuanggen Jin
doaj   +1 more source

SEXTANT X-Ray Pulsar Navigation Demonstration: Additional On-Orbit Results

open access: yes, 2018
The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission.
Luke B. Winternitz   +16 more
semanticscholar   +1 more source

Suzaku Detection of Diffuse Hard X-Ray Emission outside Vela X [PDF]

open access: yes, 2011
Vela X is a large, 3x2 degrees, radio-emitting pulsar wind nebula (PWN) powered by the Vela pulsar in the Vela supernova remnant. Using four Suzaku/XIS observations pointed just outside Vela X, we find hard X-ray emission extending throughout the fields ...
Bamba, Aya   +11 more
core   +3 more sources

Unpulsed X-rays from Pulsars [PDF]

open access: yesSymposium - International Astronomical Union, 1981
The radio emission from pulsars is energetically insignificant, yet its distinctive character led to their discovery and subsequent identification with rotating magnetized neutron stars. In the intervening thirteen years, a wealth of radio data have been accumulated from which we have learned something of the magnetospheric properties, stellar ...
openaire   +2 more sources

X-RAY EVOLUTION OF PULSAR WIND NEBULAE [PDF]

open access: yesThe Astrophysical Journal, 2010
During the search for counterparts of very-high-energy gamma-ray sources, we serendipitously discovered large, extended, low surface brightness emission from PWNe around pulsars with the ages up to ~100 kyrs, a discovery made possible by the low and stable background of the Suzaku X-ray satellite.
Bamba, A.   +6 more
openaire   +4 more sources

Multi-wavelength studies of the gamma-ray pulsar PSR J1907+0602

open access: yes, 2012
PSR J1907+0602 is a radio-faint, 107-ms GeV gamma-ray pulsar that was discovered with the Fermi LAT in a blind pulsar search. PSR J1907+0602 is located near the bright, extended TeV gamma-ray source MGRO J1908+06 which may be an associated pulsar wind ...
Pandel, Dirk, Scott, Robert
core   +1 more source

The Anomalous X-Ray Pulsars

open access: yesAIP Conference Proceedings, 2001
The observational properties of the six known Anomalous X-ray Pulsars are described in the context of the main theoretical models for this enigmatic class of objects.
openaire   +3 more sources

XMM-Newton and Chandra Observations of the Candidate Fermi-LAT Pulsar 4FGL J1015.5-6030

open access: yesThe Astrophysical Journal, 2023
4FGL J1015.5-6030 is an unidentified Fermi-LAT source hosting a bright, extended X-ray source whose X-ray spectrum is consistent with that of a young pulsar, yet no pulsations have been found.
Jeremy Hare   +4 more
doaj   +1 more source

Transient X-ray pulsar V 0332+53: pulse-phase-resolved spectroscopy and the reflection model [PDF]

open access: yes, 2015
We present the results of the pulse phase- and luminosity-resolved spectroscopy of the transient X-ray pulsar V0332+53, performed for the first time in a wide luminosity range (1-40)x10^{37} erg/s during a giant outburst observed by the RXTE observatory ...
A. Lutovinov   +21 more
semanticscholar   +1 more source

Accreting magnetars: linking ultraluminous X-ray pulsars and the slow pulsation X-ray pulsars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2018
Possible manifestations of accreting magnetars are discussed. It is shown that the four ultra-luminous X-ray pulsars can be understood in the accreting low magnetic field magnetar scenario. The NGC300 ULX1 pulsar may have a higher dipole magnetic field than other sources.
W. S. Wang, W. S. Wang, Hao Tong
openaire   +3 more sources

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