Results 21 to 30 of about 43,788 (263)

Mission Overview and Initial Observation Results of the X-Ray Pulsar Navigation-I Satellite

open access: yesInternational Journal of Aerospace Engineering, 2017
The newly launched X-ray pulsar navigation-I (XPNAV-1) is an experimental satellite of China that is designed for X-ray pulsar observation. This paper presents the initial observation results and aims to recover the Crab pulsar’s pulse profile to verify ...
Xinyuan Zhang   +4 more
doaj   +1 more source

Novel X-ray Communication Based XNAV Augmentation Method Using X-ray Detectors

open access: yesSensors, 2015
The further development of X-ray pulsar-based NAVigation (XNAV) is hindered by its lack of accuracy, so accuracy improvement has become a critical issue for XNAV.
Shibin Song   +3 more
doaj   +1 more source

314 mm2 Hexagonal Double-Sided Spiral Silicon Drift Detector for Soft X-Ray Detection Based on Ultra-Pure High Resistance Silicon

open access: yesFrontiers in Materials, 2021
An X-ray pulsar is a remnant of massive star evolution, collapse, and supernova explosions. It has an extremely stable spin cycle and is known as the most accurate astronomical clock in the natural world.
Manwen Liu   +9 more
doaj   +1 more source

Accretion onto Fast X‐Ray Pulsars

open access: yesThe Astrophysical Journal, 2004
10 pages, 5 figures, submitted to ...
Rappaport, S., Fregeau, J., Spruit, H.
openaire   +3 more sources

Accretion powered X-ray pulsars [PDF]

open access: yesThe Astrophysical Journal, 1983
A unified description of the properties of 14 X-ray pulsars is presented and compared with the current theoretical understanding of these systems. The sample extends over six orders of magnitude in luminosity, with the only trend in the phase averaged spectra being that the lower luminosity systems appear to have less abrupt high energy cutoffs.
N. E. White, J. H. Swank, S. S. Holt
openaire   +1 more source

Chandra observations of the pulsar wind nebula in SNR G0.9+0.1 [PDF]

open access: yes, 2001
We present observations with the Chandra X-ray Observatory of the pulsar wind nebula (PWN) within the supernova remnant G0.9+0.1. At Chandra's high resolution, the PWN has a clear axial symmetry; a faint X-ray point source lying along the symmetry axis ...
B. M. Gaensler   +10 more
core   +2 more sources

X-Ray Characterization of the Pulsar PSR J1849−0001 and Its Wind Nebula G32.64+0.53 Associated with TeV Sources Detected by H.E.S.S., HAWC, Tibet ASγ, and LHAASO

open access: yesThe Astrophysical Journal, 2023
We report on the X-ray emission properties of the pulsar PSR J1849−0001 and its wind nebula (PWN), as measured by Chandra, XMM-Newton, NICER, Swift, and NuSTAR.
Chanho Kim   +8 more
doaj   +1 more source

(Anomalous) X-ray Pulsars

open access: yesNuclear Physics B - Proceedings Supplements, 2004
We review the observational properties of the class of young neutron stars known as "anomalous X-ray pulsars," emphasizing the tremendous progress that has been made in recent years, and explain why these objects, like the "soft gamma repeaters," are today thought to be young, isolated, ultrahigh magnetic field neutron stars, or "magnetars."
Kaspi, V. M., Gavriil, F. P.
openaire   +2 more sources

Studying millisecond pulsars in X-rays [PDF]

open access: yesAstrophysics and Space Science, 2007
To appear in Astrophysics and Space Science, Proceedings of "Isolated Neutron Stars: from the Interior to the Surface", eds. D. Page, R. Turolla and S.
openaire   +2 more sources

Multi-wavelength observations of 2HWC J1928+177: dark accelerator or new TeV gamma-ray binary?

open access: yes, 2020
2HWC J1928+177 is a Galactic TeV gamma-ray source detected by the High Altitude Water Cherenkov (HAWC) Observatory up to ~ 56 TeV. The HAWC source, later confirmed by H.E.S.S., still remains unidentified as a dark accelerator since there is no apparent ...
An, Hongjun   +11 more
core   +1 more source

Home - About - Disclaimer - Privacy