Results 1 to 10 of about 8,336 (234)

Broadband X-Ray Spectroscopy of the Pulsar Wind Nebula in HESS J1640-465 [PDF]

open access: goldThe Astrophysical Journal, 2023
We present updated measurements of the X-ray properties of the pulsar wind nebula associated with the TeV γ -ray source HESS J1640-465 derived from Chandra and Nuclear Spectroscopic Telescope Array data.
Moaz Abdelmaguid   +3 more
doaj   +2 more sources

Shedding new light on the Crab with polarized X-rays [PDF]

open access: yesScientific 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
doaj   +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: greenThe 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   +3 more sources

Ultra-high-energy γ-ray emission associated with the tail of a bow-shock pulsar wind nebula [PDF]

open access: yesThe Innovation
In this study, we present a comprehensive analysis of an unidentified point-like ultra-high-energy (UHE) γ-ray source, designated as 1LHAASO J1740+0948u, situated in the vicinity of the middle-aged pulsar PSR J1740+1000.
doaj   +1 more source

Discovery of a Pulsar Wind Nebula Candidate Associated with the Galactic PeVatron 1LHAASO J0343+5254u

open access: goldThe Astrophysical Journal
The astronomical origins of the most energetic galactic cosmic rays and gamma rays are still uncertain. X-ray follow-up of candidate “PeVatrons”—systems producing cosmic rays with energies exceeding 1 PeV—can constrain their spatial origin, identify ...
Stephen DiKerby   +8 more
doaj   +2 more sources

The Vela Pulsar and Its Pulsar Wind Nebula Vela-X Using 13 Yr of Fermi-LAT Observations

open access: goldThe Astrophysical Journal
We present results of more than 13 yr of Fermi–Large Area Telescope (LAT) data analysis for the Vela pulsar from 60 MeV to 100 GeV and its pulsar wind nebula (PWN), Vela X, for E  > 1 GeV in the off-pulse phases.
Alexander Lange   +4 more
doaj   +2 more sources

Studying particle acceleration from driven magnetic reconnection at the termination shock of a relativistic striped wind using particle-in-cell simulations [PDF]

open access: yesEPJ Web of Conferences, 2020
A rotating pulsar creates a surrounding pulsar wind nebula (PWN) by steadily releasing an energetic wind into the interior of the expanding shockwave of supernova remnant or interstellar medium.
Lu Yingchao   +5 more
doaj   +1 more source

Improved Measurements of the IXPE Crab Polarization

open access: yesThe Astrophysical Journal, 2023
X-ray polarization from the Imaging X-ray Polarimetry Explorer (IXPE) provides an important new probe of the geometry of the pulsar emission zone and of particle acceleration in the surrounding pulsar wind nebula.
Josephine Wong   +2 more
doaj   +1 more source

High-resolution Radio Study of the Dragonfly Pulsar Wind Nebula Powered by PSR J2021+3651

open access: yesThe Astrophysical Journal, 2023
The Dragonfly Nebula (G75.2+0.1) powered by the young pulsar J2021+3651 is a rare pulsar wind nebula (PWN) that shows double tori and polar jets enclosed by a bow-shock structure in X-rays.
Ruolan Jin   +3 more
doaj   +1 more source

Why (Still) Studying Turbulence in Fluids and Plasmas?

open access: yesPerspectives of Earth and Space Scientists, Volume 4, Issue 1, December 2023., 2023
Abstract Turbulence, a captivating and intricate phenomenon, continues to attract researchers across diverse scientific disciplines. Despite considerable efforts, turbulence remains a fascinating challenge and stands as one of the unsolved enigmas in classical physics.
Tommaso Alberti   +2 more
wiley   +1 more source

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