Results 1 to 10 of about 793 (152)
Universe, 2023 Based on the expected population of core collapse supernova remnants and the huge number of detected pulsars in the Galaxy, still representing only a fraction of the real population, pulsar wind nebulae are likely to constitute one of the largest classes
Barbara Olmi
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Gamma-ray pulsar halos in the Galaxy
Frontiers in Astronomy and Space Sciences, 2022 Pulsar halos are extended gamma-ray structures generated by electrons and positrons escaping from pulsar wind nebulae (PWNe), considered a new class of gamma-ray sources.
Kun Fang
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Pulsar Wind Nebulae and Unidentified Galactic Very High Energy Sources
J, 2022 The riddle of the origin of Cosmic Rays (CR) has been an open question for over a century. Gamma ray observations above 100 MeV reveal the sites of cosmic ray acceleration to energies where they are unaffected by solar modulation; recent evidence ...
Omar Tibolla +2 more
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GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope
The Astrophysical Journal, 2023 HESS J1356-645 is considered to be a pulsar wind nebula (PWN) associated with the pulsar PSR J1357-6429. We reanalyze the GeV gamma-ray emission in the direction of HESS J1356-645 with more than 13 yr of Fermi-Large Area Telescope data.
Xi Liu +4 more
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Why (Still) Studying Turbulence in Fluids and Plasmas?
Perspectives 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
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Journal of Geophysical Research: Space Physics, Volume 128, Issue 2, February 2023., 2023 Abstract We present long‐term density trends of the Earth's upper atmosphere at altitudes between 71 and 116 km, based on atmospheric occultations of the Crab Nebula observed with X‐ray astronomy satellites, ASCA, RXTE, Suzaku, NuSTAR, and Hitomi. The combination of the five satellites provides a time period of 28 years from 1994 to 2022.
Satoru Katsuda +11 more
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A search for runaway stars in 12 Galactic supernova remnants
Astronomische Nachrichten, Volume 342, Issue 3, Page 553-577, March 2021., 2021 Runaway stars can result from core‐collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion is ejected with its former orbital velocity. A clear identification of a runaway star can yield the time and place of the explosion, as well as orbital parameters of the pre‐supernova binary system.
Oliver Lux +3 more
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The contribution of Galactic TeV pulsar wind nebulae to Fermi large area telescope diffuse emission
Communications Physics, 2022 Cosmic Rays (CRs) with energy below 1 PeV are believed to originate in the Milky Way, but recent gamma-ray observations by Fermi Large Area Telescope challenge the interpretation of CR diffusion mechanisms across the galaxy.
Vittoria Vecchiotti +2 more
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Turbulent Diffusion of the Particles within Pulsar Wind Nebulae
The Astrophysical Journal, 2023 A turbulent diffusion model is presented to account for the energy and spatial diffusion of the particles within pulsar wind nebulae (PWNe), with the assumption that the energy injected from the pulsar into the nebula is split between the turbulence ...
Fang-Wu Lu, Bo-Tao Zhu, Wen Hu, Li Zhang
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Radio Study of the Pulsar Wind Nebula Powered by PSR B1706-44
The Astrophysical Journal, 2023 PSR B1706−44 is an energetic gamma-ray pulsar located inside supernova remnant (SNR) G343.1−2.3 and it powers a compact pulsar wind nebula (PWN) that shows torus and jet structure in X-rays.
Y. H. Liu, C.-Y. Ng, R. Dodson
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