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MSP binaries as astrophysical laboratories
(Cambridge Univ Press, 2018)
Follow-up of unidentified Fermi sources has expanded the number of known galactic-field “black widow” and “redback” millisecond pulsar binaries from four to nearly 30. Several systems observed by Chandra, XMM-Newton, Suzaku, ...
Particle transport within the pulsar wind nebula HESS J1825–137
(EDP Sciences, 2019)
Context. We present a detailed view of the pulsar wind nebula (PWN) HESS J1825–137. We aim to constrain the mechanisms dominating the particle transport within the nebula, accounting for its anomalously large size and ...
The re-acceleration of galactic electrons at the heliospheric termination shock
(IOP Publishing, 2017)
Observations by the Voyager spacecraft in the outer heliosphere presented several challenges for the paradigm of diffusive shock acceleration (DSA) at the solar wind termination shock (TS). In this study, the viability of ...
Particle diffusion and localized acceleration in inhomogeneous AGN jets. II. Stochastic variation
(Oxford Univ Press, 2016)
We study the stochastic variation of blazar emission under a 2D spatially resolved leptonic jet model we previously developed. Random events of particle acceleration and injection in small zones within the emission region ...
Relativistic shear flow between electron-ion and electron-positron plasmas and astrophysical applications
(IOP, 2017)
We present particle-in-cell simulation results of relativistic shear boundary layers between electron–ion and
electron–positron plasmas and discuss their potential applications to astrophysics. Specifically, we find that ...
Probing acceleration and turbulence at relativistic shocks in blazar jets
(Oxford Univ Press, 2017)
Diffusive shock acceleration (DSA) at relativistic shocks is widely thought to be an important acceleration mechanism in various astrophysical jet sources, including radio-loud active galactic nuclei such as blazars. Such ...
The heliospheric transport and modulation of multiple charged anomalous oxygen revisited
(EDP Sciences, 2010)
Context. Since the crossings of the solar wind termination shock by the Voyager 1 and 2 spacecraft, much speculation has surrounded the acceleration mechanism and region where the anomalous cosmic ray component is accelerated. ...
Are anomalous cosmic rays the main contribution to the low-energy galactic cosmic ray spectrum?
(IOP Publishing, 2008)
While the high-energy part of the Galactic cosmic ray spectrum is well observed, its nature at energies below
about 1 GeV nucleon-1 is still not known well. Recent in situ measurements made with the Voyager 1 spacecraft
in ...
A numerical model of parsec-scale SSC morphologies and their radio emission
(AAS, 2016)
In current models for jets of active galactic nuclei and their emission a shortcoming in the description and understanding of the connection between the largest and smallest scales exists. In this work we present a spatially ...
Constraining the geometry of PSR J0855-4644: a nearby pulsar wind nebula with double torus/jet morphology
(EDP Sciences, 2017)
Aims. PSR J0855−4644 is a fast-spinning, energetic pulsar discovered at radio wavelengths near the south-eastern rim of the supernova remnant RX J0852.0−4622. A follow-up XMM-Newton observation revealed the X-ray counterpart ...