Results 11 to 20 of about 5,393 (182)
Proton Acceleration with Relativistic Electromagnetic Shock. [PDF]
Adv Sci (Weinh)New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Xiao T +5 more
europepmc +2 more sources
Improving efficiency in lung SAbR planning using integrated tools for X-ray based adaptive radiotherapy. [PDF]
J Appl Clin Med PhysAbstract Purpose To evaluate the feasibility of translating clinical lung stereotactic ablative radiotherapy (SAbR) templates from Ethos1.1 to Ethos2.0, leveraging new features to facilitate dose fall‐off and automate patient‐specific beam arrangement.
Visak J +8 more
europepmc +2 more sources
The 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
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Resolving the Bow Shock and Tail of the Cannonball Pulsar PSR J0002+6216
The Astrophysical Journal, 2023 We present X-ray and radio observations of the recently discovered bow-shock pulsar wind nebula (PWN) associated with PSR J0002+6216, characterizing the PWN morphology, which was unresolved in previous studies.
P. Kumar +6 more
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The Polarized Cosmic Hand: IXPE Observations of PSR B1509−58/MSH 15−52
The Astrophysical Journal, 2023 We describe IXPE polarization observations of the pulsar wind nebula (PWN) MSH 15−5 ^2 , the “Cosmic Hand.” We find X-ray polarization across the PWN, with B -field vectors generally aligned with filamentary X-ray structures.
Roger W. Romani +102 more
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A Bayesian Classifier for X-Ray Pulsars Recognition
International Journal of Aerospace Engineering, 2016 Recognition for X-ray pulsars is important for the problem of spacecraft’s attitude determination by X-ray Pulsar Navigation (XPNAV). By using the nonhomogeneous Poisson model of the received photons and the minimum recognition error criterion, a ...
Hao Liang, Yafeng Zhan, Chaowei Duan
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Multi-Wavelength Properties of the 2021 Periastron Passage of PSR B1259-63
Universe, 2021 PSR B1259-63 is a gamma-ray binary system hosting a radio pulsar orbiting around a O9.5Ve star, LS 2883, with a period of ∼3.4 years. The interaction of the pulsar wind with the LS 2883 outflow leads to unpulsed broadband emission in the radio, X-ray ...
Maria Chernyakova +11 more
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Shedding new light on the Crab with polarized X-rays
Scientific Reports, 2017 Strong magnetic fields, synchrotron emission, and Compton scattering are omnipresent in compact celestial X-ray sources. Emissions in the X-ray energy band are consequently expected to be linearly polarized. X-ray polarimetry provides a unique diagnostic
M. Chauvin +15 more
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Applied SciencesPulsars are neutron stars with high rotation speeds and have extraordinary long-term rotational stability. X-ray pulsar-based navigation (XNAV) is a navigation method that estimates the position and velocity of a spacecraft using the X-ray radiation from
Kun Jiang +3 more
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Comprehensive Measurement of Position and Velocity in the Transverse Direction Using the Crab Pulsar
AerospaceTraditional X-ray pulsar ranging and velocity measurement methods only estimate the radial position and velocity information of the pulsar. For non-linear orbits, errors in the transverse position and velocity of the pulsar lead to errors in the radial ...
Yuan Feng +4 more
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