Results 101 to 110 of about 1,321 (200)
Particle Acceleration and Radiation in Pulsar Wind Nebulae [PDF]
Pulsar Wind Nebulae are the astrophysical sources that host the most relativistic shocks in Nature and the only Galactic sources in which we have direct evidence of PeV particles. These facts make them very interesting from the point of view of particle acceleration physics, and their proximity and brightness make them a place where fundamental ...
openaire +2 more sources
A laminar model for the magnetic field structure in bow-shock pulsar wind nebulae [PDF]
Bow Shock Pulsar Wind Nebulae are a class of non-thermal sources, that form when the wind of a pulsar moving at supersonic speed interacts with the ambient medium, either the ISM or in a few cases the cold ejecta of the parent supernova. These systems
N Bucciantini, BUCCIANTINI, NICCOLO'
core +1 more source
Pulsar halos are produced by electrons and positrons diffusing in the interstellar medium around their parent pulsar wind nebulae. Recent observations by High Altitude Water Cherenkov Observatory and Large High Altitude Air Shower Observatory have ...
Si-Zhe Wu, Chao-Ming Li, Ruo-Yu Liu
doaj +1 more source
Pulsar wind nebulae in supernova remnants [PDF]
A spherically symmetric model is presented for the interaction of a pulsar wind with the associated supernova remnant. This results in a pulsar wind nebula whose evolution is coupled to the evolution of the surrounding supernova remnant.
E. van der Swaluw +3 more
core +1 more source
The Potential for Hadronic Particle Acceleration in Galactic Pulsar Wind Nebulae
Pulsar wind nebulae (PWNe), formed when the wind originating from a rapidly rotating neutron star flows out into its surroundings, have now been observed across the electromagnetic spectrum from the radio to the PeV gamma-ray regime.
Alison M. W. Mitchell, Samuel T. Spencer
doaj +1 more source
Investigating the Anticorrelation between Photon Index and Flux of the Crab Using RXTE and NuSTAR
We present a systematic study of the recently reported anticorrelation between X-ray flux and photon index (Γ) in the Crab Nebula, using archival Rossi X-Ray Timing Explorer (RXTE) Proportional Counter Array (3–50 keV), RXTE High Energy X-ray Timing ...
Debjit Chatterjee +4 more
doaj +1 more source
Is there room for highly magnetized pulsar wind nebulae among those non-detected at TeV? [PDF]
We make a time-dependent characterization of pulsar wind nebulae (PWNe) surrounding some of the highest spin-down pulsars that have not yet been detected at TeV. Our aim is assessing their possible level of magnetization. We analyse the nebulae driven by
Wilhelmi, Emma de Oña +3 more
core +1 more source
Anticorrelation Between Flux and Photon Index of Hard-X-Ray Emission from the Crab
Using Swift Burst Alert Telescope event-mode data during gamma-ray burst occurrences, we conduct spectral analysis for the Crab system. From 38 good observations, which span a period of 18 yr from 2006 to 2023, we find that the Crab’s X-ray flux not only
Koothodil Abhijith Augustine +1 more
doaj +1 more source
Mass-loading of bow shock pulsar wind nebulae [PDF]
We investigate the dynamics of bow shock nebulae created by pulsars moving supersonically through a partially ionized interstellar medium. A fraction of interstellar neutral hydrogen atoms penetrating into the tail region of a pulsar wind will undergo ...
Vorster, Michael +2 more
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