Results 41 to 50 of about 54,876 (252)
Ultra-high-energy γ-ray emission associated with the tail of a bow-shock pulsar wind nebula
The InnovationIn 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 +2 more sources
Improved Measurements of the IXPE Crab Polarization
The 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
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
wiley +1 more source
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
wiley +1 more source
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
wiley +1 more source
Theory of Pulsar Wind Nebulae [PDF]
AIP Conference Proceedings, 2008 Our understanding of Pulsar Wind Nebulae (PWNe), has greatly improved in the last years thanks to unprecedented high resolution images taken from the HUBBLE, CHANDRA and XMM satellites. The discovery of complex but similar inner features, with the presence of unexpected axisymmetric rings and jets, has prompted a new investigation into the dynamics of ...
Cumming, A. +5 more
openaire +3 more sources
IXPE view of the Crab pulsar wind nebula
International Conference on Rebooting Computing, 2023 We report a detailed study of the magnetic-field structure of the Crab pulsar wind nebula, using the X-ray polarization data in 2–8 keV obtained with the Imaging X-ray Polarimetry Explorer.
T. Mizuno +7 more
semanticscholar +1 more source
Pulsar wind nebula origin of the LHAASO-detected ultra-high energy gamma-ray sources [PDF]
Astronomy & Astrophysics, 2021 The recent measurement by LHAASO of gamma-ray emission extending up to 100s of TeV from multiple Galactic sources represents a major observational step forward in the search for the origin of the Galactic cosmic rays.
M. Breuhaus, B. Reville, J. Hinton
semanticscholar +1 more source
, 2022 Invited chapter for the "Handbook of X-ray and Gamma-ray Astrophysics" (Springer) Editors C. Bambi & A. Santangelo. Accepted.
Mitchell, A. M. W., Gelfand, J.
openaire +2 more sources
Broadband Emission from a Kilonova Ejecta-Pulsar Wind Nebula System: Late-Time X-ray Afterglow Rebrightening of GRB 170817A [PDF]
, 2022 We study the broadband radiation behavior of a kilonova ejecta-pulsar wind nebula (PWN) system. In this model, we jointly fit the observations of AT 2017gfo in UV-optical-IR bands and the late-time X-ray afterglow of GRB 170817A.
Jia Ren, Z. Dai
semanticscholar +1 more source